2014 B8.5 S-Line 20 inch?

[violex]

Hey team,

Have not been here in a long time... Been searching a fair bit and my head is spinning. My current set-up is a 2014 A4 S-Line on OEM RS4 wheels. 255/35/19.

I need to change my tires and I have a curbed wheel so I was thinking 20's. My head is spinning about all the widths and offsets and I don't know where to begin.

I would like to run 255/30/20's on likely a 20x9 rim. But what offset do I really need? Do I need to lower the car as well even though it's on S-Line suspension?

I would really appreciate some help here... Thank you...

[Smac770]

OEM RS4 wheels is not very descriptive from a math perspective. You mean these wheels? https://www.ecstuning.com/Audi-B7_RS...lloys/19_inch/
Ie, 19x9 et29?

If the original is x9 with a 255 tire, then a new x9 with 255 tire is going to look the same if you get the same offset. Do you like where the face of the wheel sits in the wheel well? Or do you want to adjust it?

https://www.wheel-size.com/calc/?whe...cl=50mm&sr=0mm
I'm not sure why it recommends the 20x9 et28 for the +1 sizing vs the original et29 (as nothing changed width wise), with et29 for 20x9 and et30 for 20x10 as the alternative recommendations.
But your overall diameter should be unchanged, so no shifting of the speedometer accuracy.

What do you mean by do you "need" to lower it? Of course not. Do you "want" to lower it? In which case, I'm sure plenty of others who like that thing will be around to chime in.

[violex]

Hi,

Yes that’s the style but for some reason I feel my offset is up around 35 to 42. I believe my stock rims are 8.5 wide also. The tires could sit out a touch more and I’d like that look better I think. I see so many threads about people lowering their non s-line suspension but nobody with the exact car and 20 inch upgrade I am looking into.

A.

[RLwantsS5]

20x10 et 33
245/30/20

Thats what i run.

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[violex]

What car do you have? Did you lower? Pics?

[Smac770]

Yeah, your stock B8 A4 US 19" would be 19x8.5 et43 wheel with 255/35r19 tires. Whereas my stock B8 A4 US 18" is 18x8.0 et47 wheel with 245/40r18 tires.

Offset is measured from the center of the wheel width to the mounting face.
A larger number will move the wheel mounting face from the center of the wheel towards the outside of the wheel, thus appearing to sink the wheel in towards the center of the car
A smaller number will move the wheel mounting face towards the center of the wheel, thus moving the wheel overall outwards.

If we put your stock 19" and the B7 RS4 19" into the calculator to compare,
https://www.wheel-size.com/calc/?whe...cl=50mm&sr=0mm
We see that the RS4 rim outside edge will be out 20mm compared to stock (it's not simply 43-29=14 more since it's not the same width rims)
But since the tire is the same size, it ends up only 14mm (or about half inch) outwards from stock. Which I think is typically not a problem.

So if you like where things are at and you just want a 20" rim and tire instead of a 19" rim and tire, then a 20x9 et29 with 255/30r20 should provide nearly zero change to relative position and speedometer.
6mm = 1/4 inch, so if the new rim were in the mid 30's et, I doubt you'd even notice.

[violex]

Wow huge help. What if I wanted the wheels to the outside of the car a bit more??

[Smac770]

If you want the wheels to move out, assuming the same wheel width, then you'd want a smaller offset by however much.
If you have x9 et29 rims and want the rim out another quarter inch, then you'd go for a x9 et23.

But do confirm the offset on your current wheels. They might be B7 RS4 style, but replicas could be any offset. The actual Audi ones are, based on what we find, et29, if you know you have actual Audi originals.
It also seems there might have been 19x8 et29 B7 RS4 wheels too. But those came with 235/40r19 instead of the 255/35r19. But short of actual measurements of your wheels in hand, information to keep in mind.

[violex]

Hi,

They are OEM factory rims and they came with the car. I looked them up and they might be +43 offset. This is why I am so confused and not sure what to even order.

[Liquid Smoke]

255/30/20 should be the standard fit, but if you want to add a bit of thickness to it, and since you're on the s-line suspension and not too lowered, you may have the clearance, you can go with 255/35/20 and it should fit fine. slightly meatier tires will help with ride comfort/cushion and will also help protect the wheels over potholes, bad roads, etc.

as for wheel size, 20x9" width is good, for a good flush or close to flush look, i would get the offset for a 9" somewhere around ET30-35. that should all give you a nice comfortable fit, but will give it an aggressive look.

[Audi 4 Life]

255 and 265 looks like shit in my opinion I run 275/35/20.... im.actually gonna try to run a 285/30 havent tested fitted yet but I highly reccomend 275 cant go wrong with wider tires if proportions are proper

Btw I am 20x9
My et is 46 and your gonna be hard pressed to get much lower offset without rubbing. My inner wheel lip is uber close to the control arms.....



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[violex]

Hey there,

I don’t think 255 looks terrible or like shot at all. 275 all around is why you need a higher offset so eliminate rubbing.

[violex]

Hey thanks,

I think maybe 265/30/20 would be a good option and look nice. So an offset of 30-35 would be an aggressive fit?

So would I need to lower my car? What would be a good stop coming from s line suspension.

[Liquid Smoke]

265/30 is a good option too, gives you slightly more sidewall and height over 255. but you should be fine with 30-35 offset still. on my B8 which is lowered more than S-Line, i'm running 9.5" wide with et35 offset, with 255 tires, and I still have enough clearance to fit in 265, at least on the rears, fronts are pretty flush as is. 265 would fit on the front but might rub when turning since i'm lowered alot more.

but yours is a 9" wide so you will have much more clearance. a 9" et29 would be equal to a 9.5" et35. so you will more clearance than i do with et30-35. i don't rub at all, not on turns either, so you will be just fine on the S-Line height. i wouldn't lower it anymore, get it first and see how you like it, it should look fine and will be nice and practical and comfortable, and still driveable in the winter, over snow, etc.

[Smac770]

Hi, They are OEM factory rims and they came with the car. I looked them up and they might be +43 offset. This is why I am so confused and not sure what to even order.

Well, I can't random guess at what you have on your car. Unless you bought the car new and they came on the car new, they could be anything.

A 2014 US A4 with 19's would have a 19x8.5 et43 rim, and that was only with the black optic package.
If you look at the 2014 brochure (http://www.auto-brochures.com/makes/...0A4_2014-2.pdf) page 33, you see the four different 2014 A4 rims and what they came with.
So the OEM rim for a S-Line without black optic would have been a 18x8 et47.

If you in fact have Audi OEM B7 RS4 19" as pictured in the ECS link previously posted, then they are 19x9 et29.

Just take a wheel off and measure.
Set the wheel face up on the ground. Measure the distance from the bottom of the rim to the ground (A). Then the distance from the top of the rim to the ground (B). Then the distance of the mounting face that the wheel hub presses against to the ground (C).
B - A is your wheel width. C - ( (1/2)*(B-A) ) is your et.

[violex]

The wheels I have are factory and not in that brochure. Maybe a Canadian thing. My offset is +43...

[Smac770]

Ah, F. Didn't catch that. Yeah, Canada does packaging of the options differently from the US.

But still, how to understand the numbers is unchanged. And you have the difference calculator to put the numbers in and see how things will move.
Here's the link with the 19x8.5 replaced by a 20x9 numbers, https://www.wheel-size.com/calc/?whe...cl=50mm&sr=0mm

So you're rim sticks out 1/4" more in both directions (because the x9 is half inch wider), but the tire is unchanged in size (255/35r19 and 255/30r20 are same width and diameter) or location (because the et is the same).
If you wanted more movement towards the outside of the car, then go with a smaller et. But that will also move the center of the tire outward, introducing scrub radius. Just something to note, not a deal breaker.

[Liquid Smoke]

here's another link to help, will give you a simple measurement of how further out/in the wheel sizes will make it fit.

i assume now your wheels are probably 19x8.5 et43 if they are OEM then, when you say RS4 it could be a resized replica or sometimes Audi makes OEM wheels in other sizes once it brings it down to the lower models.

so you can use that along with 20x9 et35 and see what measurement it gives you, it should say extend out 14mm more, which sounds right and that will get you nice and flush. 255/265 tires should be fine still. post a picture of your current setup and it would be a lot easier to tell.

[violex]

here's another link to help, will give you a simple measurement of how further out/in the wheel sizes will make it fit.

i assume now your wheels are probably 19x8.5 et43 if they are OEM then, when you say RS4 it could be a resized replica or sometimes Audi makes OEM wheels in other sizes once it brings it down to the lower models.

so you can use that along with 20x9 et35 and see what measurement it gives you, it should say extend out 14mm more, which sounds right and that will get you nice and flush. 255/265 tires should be fine still. post a picture of your current setup and it would be a lot easier to tell.

Thanks for all your help... I am thinking staying with a 255 tire and go up to 20 inch. I stopped by Audi last night and they have a 2017 A4 Progressive that I can step into easily. I may upgrade... I also drove and S4 and hole-e-f.... If only I had the money.

Thanks for taking the time and pointing me in the right direction for tires and wheels. I was struggling getting exact info.

Pic attached.

- - - Updated - - -

Ah, F. Didn't catch that. Yeah, Canada does packaging of the options differently from the US.

But still, how to understand the numbers is unchanged. And you have the difference calculator to put the numbers in and see how things will move.
Here's the link with the 19x8.5 replaced by a 20x9 numbers, https://www.wheel-size.com/calc/?whe...cl=50mm&sr=0mm

So you're rim sticks out 1/4" more in both directions (because the x9 is half inch wider), but the tire is unchanged in size (255/35r19 and 255/30r20 are same width and diameter) or location (because the et is the same).
If you wanted more movement towards the outside of the car, then go with a smaller et. But that will also move the center of the tire outward, introducing scrub radius. Just something to note, not a deal breaker.

Thanks for all the help.. I have a good idea now what I would need to get specific for my car. Appreciate your insight!

[Liquid Smoke]

^^ ok so yea i think its safe to say those are 19x8.5 et43. they could be OEM Audi "RS4" wheels, but they aren't the exact ones off an RS4 as those would have different centerbore size anyway (B7 vs B8) i believe. but yea those wheels i believe came on certain trim/sline or something. similar to the Rotor wheels, they are originally "RS5" wheels, but they got popular and they have them in a bunch of sizes now for varying models.

if you don't plan to lower it any more, i would say 265/30/20 would be good, the slightly thicker tire will sort of help to fill up the wheel gap and offset area too so it will help with the flush look. and i'd want some extra meat on there to protect 20" wheels, don't want to end up bending or damaging those, depending on how bad the roads are around you. (they suck here in NYC lol, even with my 19s).

255 is good too, if you want to do 255/30 that would be standard size, but for me i'd feel like the tires are too low profile/thin then. since you have some wheel gap left and good clearance, i would try 255/35. they would basically keep the same tire thickness as you have now, but on 20s. and it won't rub or anything you have plenty of clearance with your current suspension. also it will look better IMO at that height, it will fill up the gap a bit, and also you won't look like you're rolling on "dubs" lol, with big wheels skinny tires, but then on a non-lowered suspension it may look a bit funky and Q5 looking. but 255/35 will help fill up that gap and IMO make the wheels fit a bit better and it wont look as awkward.

[cybernet99]

255 and 265 looks like shit in my opinion I run 275/35/20.... im.actually gonna try to run a 285/30 havent tested fitted yet but I highly reccomend 275 cant go wrong with wider tires if proportions are proper

Btw I am 20x9
My et is 46 and your gonna be hard pressed to get much lower offset without rubbing. My inner wheel lip is uber close to the control arms.....

Hey! Audi 4 Life :) Just read your comment on this threat where you talk about running 275's on an A4 with S-Line susp.

The offset looks like the wheels are tucked inside pretty tight.

I'm wanting to run 275 square. I'm wanting a very slight stretch though on the rim, so was thinking 275-30R20 on 20x10, ET 40?

Trying to figure out the right offset to fit them inside without rubbing. I really want the AG Wheels, F211's with some Firestone Indy 500's

The cost of the wheels will be bloody pricey, so I really want to make sure I will be able to fit them and that they will fit well, not just "fit".

You are the first person I've seen post that is actually running 275's on a B8 A4.

[Audi 4 Life]

Hey! Audi 4 Life :) Just read your comment on this threat where you talk about running 275's on an A4 with S-Line susp.

The offset looks like the wheels are tucked inside pretty tight.

I'm wanting to run 275 square. I'm wanting a very slight stretch though on the rim, so was thinking 275-30R20 on 20x10, ET 40?

Trying to figure out the right offset to fit them inside without rubbing. I really want the AG Wheels, F211's with some Firestone Indy 500's

The cost of the wheels will be bloody pricey, so I really want to make sure I will be able to fit them and that they will fit well, not just "fit".

You are the first person I've seen post that is actually running 275's on a B8 A4.

I used to have ET48 when I was running the stasis 20x9 cast SE12.





The pic above I posted before is ET46 stasis forged FD11.

You wouldnt want to run any lower offset less than et46 on a 275. Also in these pics I was on stasis touring suspension which I think is the lowest spring available without going coils not sure what the FTG is I've never measured.

Also FYI tire brand really matters the same size is going to have variations among different brands.

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[spike6339]

Hey, I hate to bump an older thread.... But Ive been searching forums, and can't seem to make up my damn mind on the best setup. I picked up some 20's for a decent enough deal, and they got wrapped with some super super thin sidewall tires. The Current setup is 230/30/R20, and the wheel is 20x9. The tire is far too low pro for my liking, and I wanna go a bit thicker on the sidewall. What would be the best setup for wanting to eat up some of the wheel gap on a 2013 A4 non S-line? Currently a stock suspension setup, but wouldn't mind going a little lower in the future. I've been leaning towards a 245/35/r20 tire, but not sure if i'll run into any issue with rub. People say you may get rub with 255's, so i'm not sure how people even talk of a 275


Current setup:

62223660536__2D8A397C-5259-43D1-A833-A57131B815C3.jpg62223661405__CE5807EF-2DF0-4CE8-87DF-AF4AB6B71273.jpg

[spike6339]

What are people's experiences with wider or taller tires ? The tire shop that put my wheels on was claiming /30 was the max I could go with my car. But... This was also coming from someone who kept telling me running a wider tire with the same size aspect (30) wouldn't change the sidewall height at all. So let's just say, the conversation didn't last too long.

It wasn't actually the "Tire Shop" telling me this, rather the receptionist at the desk.

[Smac770]

It doesn't appear B8 A4/S4 had a 20" factory option, but B8 A5/S5 did. 20x9 et29 with 265/30R20 XL 94Y. That load index seem low, so I imagine the PSIs for that wheel/tire is higher than the 18's and 19's.

https://www.wheel-size.com/calc/?whe...cl=50mm&sr=0mm

If that rim is the same ET43 as the A4 19" (that black wheel face looks pretty flat, but it also seems to stick out a lot?), then you get an extra 1/4" on both sides vs the original wheel/tire and I doubt that would be much of an obstacle.

[Grouch]

What are people's experiences with wider or taller tires ? The tire shop that put my wheels on was claiming /30 was the max I could go with my car. But... This was also coming from someone who kept telling me running a wider tire with the same size aspect (30) wouldn't change the sidewall height at all. So let's just say, the conversation didn't last too long.

It wasn't actually the "Tire Shop" telling me this, rather the receptionist at the desk.

Holy rubber band tires! I'm surprised you haven't cracked those wheels yet.

I checked here for all my wheel/tire specs (https://www.getyourwheels.com/). According to them, 20" wheels you can run 245 or 255/30 tires with an et35 but you will prob rub depending on your drop.

[Audi 4 Life]

What are people's experiences with wider or taller tires ? The tire shop that put my wheels on was claiming /30 was the max I could go with my car. But... This was also coming from someone who kept telling me running a wider tire with the same size aspect (30) wouldn't change the sidewall height at all. So let's just say, the conversation didn't last too long.

It wasn't actually the "Tire Shop" telling me this, rather the receptionist at the desk.

What's your offset?
That matters a lot if you want to fit a wider and taller tire. The 20x9 wheels stasis use the se12 are et48 and the forged fd11 are et46. Stasis reccomends 265/35 or a 275/35 or even 285/30. I am running 275/35 and highly reccomend it it has a tiny bit more sidewall but still looks good and wider tires always look sweet IMO. I want to switch to a 285/30 next.

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[Spawne32]

Why in the world would anyone want to run a 30 sidewall is beyond me.

[spike6339]

What's your offset?
That matters a lot if you want to fit a wider and taller tire. The 20x9 wheels stasis use the se12 are et48 and the forged fd11 are et46. Stasis reccomends 265/35 or a 275/35 or even 285/30. I am running 275/35 and highly reccomend it it has a tiny bit more sidewall but still looks good and wider tires always look sweet IMO. I want to switch to a 285/30 next.

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Got any pictures of your setup? And I believe the offset is +38. The wheels I got only come in a +38 and a +42.


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[spike6339]

Holy rubber band tires! I'm surprised you haven't cracked those wheels yet.

I checked here for all my wheel/tire specs (https://www.getyourwheels.com/). According to them, 20" wheels you can run 245 or 255/30 tires with an et35 but you will prob rub depending on your drop.

Rubberband tires is no lie! And it took all of 6 hours before I found a parking lot that didn’t agree with the tire size, nice little knick the wheel.


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[Audi 4 Life]

Got any pictures of your setup? And I believe the offset is +38. The wheels I got only come in a +38 and a +42.


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Yea right above your origonal post

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[spike6339]

Yea right above your origonal post

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Haha my bad, I do like that look. So you are pretty happy with the ride?


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[Audi 4 Life]

Haha my bad, I do like that look. So you are pretty happy with the ride?


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Oh yeah. With the 20s TBH it road a lot better on the stasis touring suspension the ohlins are a tad stiffer but. I would suggest for anyone who wants to run 20s and maintain the most amount of comfort stay with a lowering spring. Coils at least at least quality like ohlins are not bad at all don't get me wrong it rides excellent. But it was pretty clear the lowering springs had more comfort and ability to eat up a lot more bumps in the road but the ohlins increased handling significantly.

Edit, alsp note our roads around here are pretty shitty.



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[audi-art]

Hey thanks,

I think maybe 265/30/20 would be a good option and look nice. So an offset of 30-35 would be an aggressive fit?

So would I need to lower my car? What would be a good stop coming from s line suspension.

that is what i have 265/30/20 but dunno the offset, i have original audi wheels , s-line suspension and to my idea there is no need to lower further... but that is subjective

[Liquid Smoke]

Hey, I hate to bump an older thread.... But Ive been searching forums, and can't seem to make up my damn mind on the best setup. I picked up some 20's for a decent enough deal, and they got wrapped with some super super thin sidewall tires. The Current setup is 230/30/R20, and the wheel is 20x9. The tire is far too low pro for my liking, and I wanna go a bit thicker on the sidewall. What would be the best setup for wanting to eat up some of the wheel gap on a 2013 A4 non S-line? Currently a stock suspension setup, but wouldn't mind going a little lower in the future. I've been leaning towards a 245/35/r20 tire, but not sure if i'll run into any issue with rub. People say you may get rub with 255's, so i'm not sure how people even talk of a 275

Current setup:

62223660536__2D8A397C-5259-43D1-A833-A57131B815C3.jpg62223661405__CE5807EF-2DF0-4CE8-87DF-AF4AB6B71273.jpg

oh yea those are definitely too thin lol. so for comparison my setup is 19", 9.5 wide with et35 offset, and i run 255/35 tires. i'm lowered also, i don't rub at all but i'd say i'm close to, 255 is prob the widest i could go on my current setup.

but for you since you arent lowered, and those are 9" wheels, you could go up to 265/275 if you wanted. i think 255/35/20 would be a good size, that will be a nice squared setup on 9" wide, no stretch. 265 would give you a slightly more bubbled out/meaty look if you prefer that.

- 255/35/20, this will give you the 19" tire thickness, but you may not be able to go too low with this, just a slight S4 level drop maybe but not too low, but it would be great for now to add some tire thickness and fill up that wheel gap a little more. but FYI 255/30/20 is the OEM option on the S4 with a 20x9, so it would work too and definitely wont be as thin as your 235/30.

- 265/30/20, i think this is a good middle option. slightly more meat than the OEM 255/30, would be the best option if you were lowered and won't have to worry about rubbing.

- 275/30/20, should work fine for now too, you can go 275 without rubbing, even if you slightly lower it later on i dont think 275 on a 9" is wide enough to rub anyway. i believe 275/30 is the OEM size for the RS5 and other models.

[Audi 4 Life]

More pics

Here's also 275/30 on my friends S6 with the same wheel.

255/30 is going to be stretched and ride like shit and so is 265 just a tad stretch. 275/36 just barley covers the edge of the wheel not even 2mm. Its hard to tell but if you zoom in you can see the 275/30 has just a tiny bit less sidewall.

[spike6339]

oh yea those are definitely too thin lol. so for comparison my setup is 19", 9.5 wide with et35 offset, and i run 255/35 tires. i'm lowered also, i don't rub at all but i'd say i'm close to, 255 is prob the widest i could go on my current setup.

but for you since you arent lowered, and those are 9" wheels, you could go up to 265/275 if you wanted. i think 255/35/20 would be a good size, that will be a nice squared setup on 9" wide, no stretch. 265 would give you a slightly more bubbled out/meaty look if you prefer that.

- 255/35/20, this will give you the 19" tire thickness, but you may not be able to go too low with this, just a slight S4 level drop maybe but not too low, but it would be great for now to add some tire thickness and fill up that wheel gap a little more. but FYI 255/30/20 is the OEM option on the S4 with a 20x9, so it would work too and definitely wont be as thin as your 235/30.

- 265/30/20, i think this is a good middle option. slightly more meat than the OEM 255/30, would be the best option if you were lowered and won't have to worry about rubbing.

- 275/30/20, should work fine for now too, you can go 275 without rubbing, even if you slightly lower it later on i dont think 275 on a 9" is wide enough to rub anyway. i believe 275/30 is the OEM size for the RS5 and other models.

Thanks for the info, that actually helps a ton. I do plan on lowering it in the future, but probably just to S4 stance, maybe a tad lower. Don’t want to be super low, it’s is well my daily :-)


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[RLwantsS5]

Hey team,

Have not been here in a long time... Been searching a fair bit and my head is spinning. My current set-up is a 2014 A4 S-Line on OEM RS4 wheels. 255/35/19.

I need to change my tires and I have a curbed wheel so I was thinking 20's. My head is spinning about all the widths and offsets and I don't know where to begin.

I would like to run 255/30/20's on likely a 20x9 rim. But what offset do I really need? Do I need to lower the car as well even though it's on S-Line suspension?

I would really appreciate some help here... Thank you...

I run a 255/30/20 toyo t1 r here in FL. 20x10 stance sc6 w a 33 offset. Lowered on vogtland coils. Very minimal rub unless my wife and daughter r in the car. there is a slight stretch. I do not recommend this setup anywhere where potholes exist.

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[Allroad23]

Here is my set up from stock on my Allroad 18's

I went with 255 35 20, ET 30, tires are temp when I got the wheels and will swap them out for Pirelli's[

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