265/40/18 tire fitment?

[Rod Paine]

Anyone running a 265/40/18 on a 2019 RS 3?
I am currently running a 245/40/18 on our late build 2019 RS 3 to deal with our very poor road surface conditions on country back road runs, but would like to have a bit more tire sidewall height, thus a sidewall of 4.2" vs the current 3.9" we're running with the 245/40 tires.

The original 235/35/19 would not survive the 'hits' these roads surface conditions would inflict... to say nothing about fillings in your teeth remaining in place!

The 265 would be a full inch taller tire and not sure about clearance during large suspension changes with road variations at speed?

Anyone running a 265/40/18 on a late build 2019 Audi RS 3 and doing fast back roads runs on twisty/poor surface country back roads at speed?

I've been running these roads since 1985 (35 years) but maintenance has been poor the last 8-10 years and they've degraded considerably. Unfortunately this seems to be the problems with all our roads, including those that are ideal for road handling performance testing.

[RSKYBET]

No. Someone literally just showed you a picture in the other thread of a 26" tall, 255mm section width tire basically touching the wheel liner when turned. 265/45/18 is another 0.3" taller with 10mm more section width.

Frankly, it sort of sounds like you just need a different car. I live in Michigan (widely known as home of some of the worlds worst roads) with 245/40/18 AS3+ tires, and I think it rides great for the kind of car it is. It's not a Lexus, nor should it be.

Now that I've gotten all that unhelpfulness out of the way, maybe you should look at this because I don't think you're going to get to where you want with tire sizes: https://www.dscsport.com/product/v4-controller-audi-2/

[Rod Paine]

You wrote... <Frankly, it sort of sounds like you just need a different car. I live in Michigan (widely known as home of some of the worlds worst roads) with 245/40/18 AS3+ tires, and I think it rides great for the kind of car it is. It's not a Lexus, nor should it be.>

If you are running 245/40/18 AS3+ and your happy with their performance on your roads, then you CERTAINLY are not running your roads very fast or they are truly much better quality roads than what we're running and have run 4,287 miles on them at speed, out of a total of 8,537 miles!

How fast are you driving your roads? Audi has advised me that a 255/40/18 tire will not create tire wheel well contact problems and will help with road surface problems, compared to the 245/40/18 tire's abilities.

[zatch_303]

https://www.audizine.com/forum/showt...Wheel-Fitments

Check that out. Lots of people running more meat.

[RSKYBET]

You wrote... <Frankly, it sort of sounds like you just need a different car. I live in Michigan (widely known as home of some of the worlds worst roads) with 245/40/18 AS3+ tires, and I think it rides great for the kind of car it is. It's not a Lexus, nor should it be.>

If you are running 245/40/18 AS3+ and your happy with their performance on your roads, then you CERTAINLY are not running your roads very fast or they are truly much better quality roads than what we're running and have run 4,287 miles on them at speed, out of a total of 8,537 miles!

How fast are you driving your roads? Audi has advised me that a 255/40/18 tire will not create tire wheel well contact problems and will help with road surface problems, compared to the 245/40/18 tire's abilities.

Lol, Audi Corporate or an Audi dealer told you this? Dealers generally don’t know squat.


Sent from my iPhone using Audizine

[RSKYBET]

https://www.audizine.com/forum/showt...Wheel-Fitments

Check that out. Lots of people running more meat.

On page 72 of that thread, Paul himself says he doesn’t recommend 255/40r18 because they’ll likely rub.


Sent from my iPhone using Audizine

[Rod Paine]

Audi Corporate specifically for the last build 2019 RS 3 vehicle. Yes, dealers have been pretty much useless for ACCURATE
info of this type in my 63 years of dealing with them, especially during my early racing days.

[Rod Paine]

zatch_303 wrote...
https://www.audizine.com/forum/showt...Wheel-Fitments
Great resource THANK YOU!

[steve111b]

You can run a higher profile tire which would be a 225/45R18. I have had this setup for two winters. Just remember that your maximum width is 225 (on the front).

Have you lowered the tire pressures? Have you tried constantly changing the suspension setting to match the road conditions? Checked for a bent wheel? Your road force balance should be below 15. All my new tires have a road force of under 10. Wheel alignment? Lighter wheels will give you less unsprung weight, which should help absorbing the bumps. Is the ESC light flashing all the time? Are you finding the G force is down on these bumpy roads?

Racing drivers walk the track to check the road condition. Can you either walk or drive very slowly and keep a log (like rally notes)?

[JOBJOB]

You can run a higher profile tire which would be a 225/45R18. I have had this setup for two winters. Just remember that your maximum width is 225 (on the front).

Have you lowered the tire pressures? Have you tried constantly changing the suspension setting to match the road conditions? Checked for a bent wheel? Your road force balance should be below 15. All my new tires have a road force of under 10. Wheel alignment? Lighter wheels will give you less unsprung weight, which should help absorbing the bumps. Is the ESC light flashing all the time? Are you finding the G force is down on these bumpy roads?

Racing drivers walk the track to check the road condition. Can you either walk or drive very slowly and keep a log (like rally notes)?

You running 225/45/18 on 18x8 on stock suspension? I almost ordered 225/40/18 but if 45 works I’d go with this. I want the best protection for potholes and the narrowest possible.

[mugenr]

On page 72 of that thread, Paul himself says he doesn’t recommend 255/40r18 because they’ll likely rub.


Sent from my iPhone using Audizine

Just let him do it. let him get 255/40/18 or 265/40/18 and try it out.
Apparently, picture proof, i posted in the other thread, that it won't work is not good enough.

BTW, there is no difference in dimension of wheel wells and clearance between any year of the 8v.2 RS3. BUT you wouldn't believe us anyway. So, just do it.

[steve111b]

Yes, 225/45/18 tires with 18x8 wheels on stock suspension. Going down to the 18 inch wheel gives 8 psi of extra softness, (had 225/40/19 first winter) which is a major improvement over the 19s. I found the 19s to be a poor choice for an Ottawa winter. Almost every car has better tires than a 19 inch 225 (or 245 which is worse again).

[RSKYBET]

Just let him do it. let him get 255/40/18 or 265/40/18 and try it out.
Apparently, picture proof, i posted in the other thread, that it won't work is not good enough.

BTW, there is no difference in dimension of wheel wells and clearance between any year of the 8v.2 RS3. BUT you wouldn't believe us anyway. So, just do it.

Lol, that’s where I’m at too. I had to do a double take at when this thread was opened being that it was after your post...


Sent from my iPhone using Audizine