New 2024 RS6 has 3 defective tires.

[TonyFLL]

Hello, I just picked up my RS6. Has about 150 miles on it. Took it on the highway for the first time. Noticed a nasty shaking at 70-80mph. Took it to the dealer and told them to check the balance on wheels. They called me today said that 3 of 4 tires have "excessive road force" and need to be replaced under warranty. Has anyone ever heard of this happening from the factory. Owned many new cars and never had this issue.

[Jprieur]

It happens.

Had an 2019 RS5 that had one tire with over 40 lbs of road force new, which is insane.
Had an 2021 TTRS that came from the factory with Pirellis that would not balance and had a constant vibration around 75, they balanced several times and could not get it to fully go away.

These low profile tires and tight suspensions are extremely sensitive to road force. Ideally you are looking for single digit road force, but in reality under 12/15 lbs is good for all but the very sensitive drivers.

It's a pain in the ass but it happens. The car didn't sit long did it? Long term non use can cause flatspotting, but I'm willing to bet a new RS6 never sat in one place too long.

Insist that they road force the replacements and ask to see the road force values. Like I said you are looking for below 10 lbs, but if you end up with some slightly above have them put those on the rear. There are a lot of places that say they road force, but often do a quick job and don't do it fully right. Best way to tell it was actually done is to see some form of colored marks on the tire and rim matched up. that means the tech actually rotated the tire on the wheel to match the high point of the tire with the low point of the wheel.

[rexus300]

IT has happened to two of my BMWS but not Audis. It can happen with new tires if they were not inflated properly before transport and sitting too long. At least Audi dealer found the excessive road force and will replacement. TBH Pirellis are trash tires. I prefer Michelin Pilot Sport 4S. Way more smoother and rounder with better handling ride feel etc. I always make sure all my tire/wheels are below 10lbs for cars and suvs for glass smooth ride.

[tinmanwpk]

10PSI for tire pressure?!!! Huh???

[Cheweric]

10lbs, not PSI… they are talking about road force balancing, not tire pressure.

[rexus300]

10PSI for tire pressure?!!! Huh???

10 lbs of road force equivalent to .010 inch of run out of the tire and wheel assembly.

[tinmanwpk]

Lol, thanks. I knew one of us was nuts. I resemble that remark!

[rexus300]

Lol, thanks. I knew one of us was nuts. I resemble that remark!

All good! This is why we have these forums to help each other out etc.

[TonyFLL]

So they replaced 3 tires and the car still vibrates. I'm getting very frustrated with it. The vibration is noticeable enough that it shakes the passenger head rest at 70-80mph

[spyderbret1]

So they replaced 3 tires and the car still vibrates. I'm getting very frustrated with it. The vibration is noticeable enough that it shakes the passenger head rest at 70-80mph

What manufacture tire? Continental, Michelin?

[TonyFLL]

What manufacture tire? Continental, Michelin?

Continental

[spyderbret1]

Continental

Wish I could help. I had a similar issue with the Michelin's on 2 other cars and didn't like them for a while but I had to put them on my car and they have been fine. Noisy but fine. I was planning on switching back to Conti's after they become more available and when my PSS4's get worn. If you had Michelin's then I wouldn't have been surprised.

[rexus300]

So they replaced 3 tires and the car still vibrates. I'm getting very frustrated with it. The vibration is noticeable enough that it shakes the passenger head rest at 70-80mph

Did they give the road force print outs? Make sure they are no higher than 10lbs run out. Some techs are lazy and accept the normal 26 lbs max but still anything in the 15-20s will vibrate these cars. I am sensitive and I can detect the minor vibration in my seats, steering wheel or even the passenger headrest. My RS7 is glass smooth up to 100.

[jmswashere]

So they replaced 3 tires and the car still vibrates. I'm getting very frustrated with it. The vibration is noticeable enough that it shakes the passenger head rest at 70-80mph

There may be wheel bearing/other part damage from the prior vibration(s) apart from the tires. I would have them check everything.

[rexus300]

Hello, I just picked up my RS6. Has about 150 miles on it. Took it on the highway for the first time. Noticed a nasty shaking at 70-80mph. Took it to the dealer and told them to check the balance on wheels. They called me today said that 3 of 4 tires have "excessive road force" and need to be replaced under warranty. Has anyone ever heard of this happening from the factory. Owned many new cars and never had this issue.

Any updates on this?

[TonyFLL]

Any updates on this?

It's back at a diffrent dealer. Audi of Ft Lauderdale is the worst dealer I've ever dealt with so I took it somewhere else. The foreman went on a ride with me and they called me the next day. The car needs 2 new tires again. This time both rears. One which already replaced and the other that wasn't replaced the first time around. Crossing my fingers this is the problem. If not idk what's next.

[tinmanwpk]

Lemon Law.

[TonyFLL]

Lemon Law.

Believe by my state law it requires 3 visits for the same issue. So one more visit

[georgy]

Does anyone have like a really loud and annoying popping/clunking sound coming from their front tires when steering on dry pavement? I can hear it the most when dry steering while parked. When it rains noise disappears.

Had a similar noise from another car years ago and I was conceived that it was the suspension but it ended up being tires again.

[STALKER]

Does anyone have like a really loud and annoying popping/clunking sound coming from their front tires when steering on dry pavement? I can hear it the most when dry steering while parked. When it rains noise disappears.

Had a similar noise from another car years ago and I was conceived that it was the suspension but it ended up being tires again.

Do you mean when stopped or going very slowly, especially on cold tires? My 911s all do that.

[georgy]

Do you mean when stopped or going very slowly, especially on cold tires? My 911s all do that.

Yea exactly, what the hell is that?

[STALKER]

Yea exactly, what the hell is that?

Combination of suspension geometry at full lock and cold tires.
Should only happen with cold tires, they are kinda skipping across the pavement.

[tinmanwpk]

It's a crabwalk.

[georgy]

Combination of suspension geometry at full lock and cold tires.
Should only happen with cold tires, they are kinda skipping across the pavement.

No, mine does it cold or hot tires and the steering doesn't need to be at full lock either.

[STALKER]

No, mine does it cold or hot tires and the steering doesn't need to be at full lock either.

lol, you on your own then.

What model year is your car, tire/wheel combo?

[Jprieur]

Combination of suspension geometry at full lock and cold tires.
Should only happen with cold tires, they are kinda skipping across the pavement.

Google Ackerman effect/principle. Really noticeable for me when your wheel travels over the painted parking lines since those have less grip than the surrounding pavement.

Porsche 911 folks are very familiar with it!

Completely normal!

[georgy]

lol, you on your own then.

What model year is your car, tire/wheel combo?

2023 I have the P zeros on 22s

[suffeks]

if you replace all the tires and it's shaking it's not the tires, but wheel

brakes if it shakes under braking, axles if it shakes under acceleration

even having center bore off by 0.5mm inside the wheel will cause a shake because the rim doesn't sit perfectly center on the hub, so tire balancer will see balance but when u put it on car it shakes

you can try finding someone who does dynamic balancing aka on the car, but for a brand new car that's crazy, older cars fine

i had vibration nobody could fix on older vw, went to this magician he balances the wheels on the car speeds them up to 80mph and hooks up oscilloscope to car frame to pickup any vibrations

car is smoother than a maybach now LOL

[rexus300]

if you replace all the tires and it's shaking it's not the tires, but wheel

brakes if it shakes under braking, axles if it shakes under acceleration

even having center bore off by 0.5mm inside the wheel will cause a shake because the rim doesn't sit perfectly center on the hub, so tire balancer will see balance but when u put it on car it shakes

you can try finding someone who does dynamic balancing aka on the car, but for a brand new car that's crazy, older cars fine

i had vibration nobody could fix on older vw, went to this magician he balances the wheels on the car speeds them up to 80mph and hooks up oscilloscope to car frame to pickup any vibrations

car is smoother than a maybach now LOL

We just discussed road force balancing not dynamic balancing. The tires are defective and 2 of them are out of tolerance. I never do dynamic balancing always road force balancing for low profile tires and rims. However the old school high speed balancing does not work anymore with these kind of cars. Its very rare for hub to be off on new cars and brakes or axle problems are less than 1% of the issues.

[suffeks]

Hunter road force couldn't help me, this is what I had to do https://youtu.be/7UP97bO-MpU

[rexus300]

Hunter road force balance is the best out of everything and the machine can only be as good as the tech using them. I have had great success with them for the past 15 years on all of my cars and the right tech.