Pilot 4s Rubbing 295 30 20

[f80er]

Got some HRE Classic 300's but have a peculiar problem.

20 x 11.5 et 37
Pilot 4s 295/30/20

It rubs only on the driver rear which was hit and repaired by the local BMW collision center (a little less than a month ago). On stock 20s with 10mm spacer and OEM 285 it doesn't rub at all. Also on my previous set of 19s and 305s no rubbing either. But the HREs + 295s rub on the inside lip of the rear quarter and I can see where it rubbed the paint off. I am wondering what could the body shop of have done to cause this? Not pulled the fender out enough? I already brought it to their attention and they said "we could try and shave it but don't know why it would do that? And these aftermarket wheels I just don't know." I explained that its only doing it after the repair and only on the side they touched.

Damage from the accident was as only cosmetic (sideswiped while stopped) and they simply repaired it vs replacing the rear quarter. Having said all that shit hopefully they can figure this out but if not what are my options? More negative camber? Wider, lower profile tire 305/25?

[nicknaz]

Did you check the alignment and control arms and subframe when the fender was fixed?

It looks like the wheel/tire got hit also.

[f80er]

Originally Posted by nicknaz

Did you check the alignment and control arms and subframe when the fender was fixed?

It looks like the wheel/tire got hit also.

I didn't and would hope the body shop did. There was no damage to the wheel whatsoever and everything they did was cosmetic. I know they didn't do an alignment because they said my car was too low.

Could an alignment fix this?

[Lifestyler]

U need more camber and u fine.have u. Some pics how the car sits currently?

[Tommy L Garage]

Alignment could fix it (camber)

But also perhaps they didn’t pull the fender enough
Don’t judge left to right side - they’re not a perfect mirror image.

Jack up the car and see wheee it rubs. Then see if you Can bend the plastic. Easy

[f80er]

Originally Posted by Lifestyler

U need more camber and u fine.have u. Some pics how the car sits currently?

Car is dirty as hell with the bad weather we've been having but I can take pic if you like. What do you want to see?

Originally Posted by Tommy L Garage

Alignment could fix it (camber)

But also perhaps they didn’t pull the fender enough
Don’t judge left to right side - they’re not a perfect mirror image.

Jack up the car and see wheee it rubs. Then see if you Can bend the plastic. Easy

Pic is in my first post of where it rubs, inside lip of the quarter panel at the top.

I thought to that maybe they didn't pull it enough but no alignment either has me wondering what is causing it. Going to take it to the alignment shop tomorrow and see what they say. I also have an appointment next week with the body shop to fix the other shit they messed up so if the alignment doesn't fix it I will make sure they do.

[Lifestyler]

Originally Posted by f80er

Car is dirty as hell with the bad weather we've been having but I can take pic if you like. What do you want to see?



Pic is in my first post of where it rubs, inside lip of the quarter panel at the top.

I thought to that maybe they didn't pull it enough but no alignment either has me wondering what is causing it. Going to take it to the alignment shop tomorrow and see what they say. I also have an appointment next week with the body shop to fix the other shit they messed up so if the alignment doesn't fix it I will make sure they do.

How low it sits and how close is it to the Fender.

[f80er]

At the alignment shop now. They said it looked like the driver side had less camber than the passenger and I could kind of see it as well. Driver side was more | while the passenger side was more \.

Shop said the rears are spot on between them at -1.7. They are going to try to give it a little more negative camber (-2) to see if it fixes the problem but right now it looks like its shoddy repair work.

[T1M3LESS]

just check alignment.

shouldn't have any major issues with that setup.

[f80er]

Originally Posted by T1M3LESS

just check alignment.

shouldn't have any major issues with that setup.

I agree and I wouldn't consider it major and just didn't expect to rub at all. I was going to ask you because you are essentially running the same setup right? Do you rub at all?

Either way I had it aligned, camber was at -1.7 in the rear on both sides but the toe was out. They got the rear to -1.9 and adjusted the toe and its better but not completely solved. Not sure how much more negative camber I can get with the stock adjustment?

[T1M3LESS]

Originally Posted by f80er

I agree and I wouldn't consider it major and just didn't expect to rub at all. I was going to ask you because you are essentially running the same setup right? Do you rub at all?

Either way I had it aligned, camber was at -1.7 in the rear on both sides but the toe was out. They got the rear to -1.9 and adjusted the toe and its better but not completely solved. Not sure how much more negative camber I can get with the stock adjustment?

Yes.. with an 11.5 rear, et 37/38 should be the threshold (at least in my experience) for an issue-free setup.

I can't remember my exact camber, but I've had no rubbing issues on mine with PS4S.
If you're still rubbing constantly, you can either switch to MPSS or switch tire sizes 255/30 305/25 -- that is if you're running 9.5 front.

[f80er]

Originally Posted by T1M3LESS

Yes.. with an 11.5 rear, et 37/38 should be the threshold (at least in my experience) for an issue-free setup.

I can't remember my exact camber, but I've had no rubbing issues on mine with PS4S.
If you're still rubbing constantly, you can either switch to MPSS or switch tire sizes 255/30 305/25 -- that is if you're running 9.5 front.

I am running 9.5 et 16 up front but really have no interest in changing all 4 tires as I just bought brand new 295/30s. From what I have been told this setup shouldn't rub but it does for me, why I don't know.

Its going back to the body shop next week and and I will wait to see what they say. Maybe the body shop screwed up the repair and will, by the grace of god, figure it out and get me squared away.

[T1M3LESS]

Originally Posted by f80er

I am running 9.5 et 16 up front but really have no interest in changing all 4 tires as I just bought brand new 295/30s. From what I have been told this setup shouldn't rub but it does for me, why I don't know.

Its going back to the body shop next week and and I will wait to see what they say. Maybe the body shop screwed up the repair and will, by the grace of god, figure it out and get me squared away.

Agreed. Changing 4 tires is on the extreme side. Again, you shouldn't be rubbing with that setup. (I'm on KW V3s btw)

Hope you resolve it. Best of luck!

[f80er]

Without a doubt I am on both sides in nearly the exact same spots. Driver side feNder liner is brand new so I know it's from these wheels. Who knows about the passenger side. Maybe just more pronounced on the drivers side with me driving. So I don't know if camber or the body shop could solve it. Tires, heat and beat that part flat or just deal with it.

[shaddy]

I am tucking tire in the rear with 19x10.5 +35 295/30/19. When I initially threw on the set up I was rubbing with passengers in the rear exactly where you show. You can see a comparison of our fitment here.

I ended up going in with a heat gun and pushing in the fender liner a bit, I could already see the tire had wore through the plastic though. It was not close enough to touch the actual fender so I was not worried. The rubbing has since stopped. You can either heat up the liner or cut around where you are getting that rub.

You are hardly rubbing, if you are wanting that type of aggressive fitment just modify the fender liner a bit and enjoy. You could add camber if you'd like but I think just heating or cutting will be sufficient.

[Justin.AutoTalent]

Do you have your toe and camber spec?

You probably need closer to 2.2 to 2.3 in the rear

The front if you're rubbing check the toe. If you're toe out at all you're for sure rubbing from that

[f80er]

Here are my alignment specs. Any idea what the max negative camber I can get from the stock adjustment? I go not problem buying toe links if I need to. If I can't get them to clear with camber then onto heat and or different tires.

I know it's hardly rubbing but I was told it wouldn't rub yet here I am.

[conquistador714]

OEM PSS are 285/30/20 which have a sectional width of 11.4" and a tread with of 9.9". By putting on a 295/30/20 you are now running a sectional width of 11.9" and a tread width of 10.3", 0.5" or 13mm wider than the originals. You put a wider tire and you have a 10mm spacer on so you have less clearance. If your offsets are correct for the car, take the spacer out and you wont rub.

[f80er]

Originally Posted by conquistador714

OEM PSS are 285/30/20 which have a sectional width of 11.4" and a tread with of 9.9". By putting on a 295/30/20 you are now running a sectional width of 11.9" and a tread width of 10.3", 0.5" or 13mm wider than the originals. You put a wider tire and you have a 10mm spacer on so you have less clearance. If your offsets are correct for the car, take the spacer out and you wont rub.

Not stock wheels and no spacer. Reread the thread my man.

[shaddy]

As Justin said try -2.2 or -2.3, you can get that range with stock adjustment. I believe I am -2.3 right now.

[THEROK]

It's not uncommon at all to have manufacturing variance side to side. We are talking millimeters here on mass produced commuter cars in the case of our beloved F8Xs. Think about how badly Aston Ms and the Teslas of the world struggle with even bumper fitment! It's not easy.

On my M4 bought new, no accidents, there's a ~2mm rear fender2tire variance side to side. In fact, the driver side has less clearance than the passenger side on my ride which would suggest that F82s may share this common assembly trait.

Your 11.5" ET37 is riding on a knife's edge along the fitment front. I run the same 295/30/20 PS4Ss, but I chose specs that gave me ~2mm of wiggle room to account for any factory assembly variance.

Friend's M2, GT4 Cayman, my old GT3 had even worse side to side variance. You just have to be smart about specs you choose when going wider, fatter and sexier. Running additional camber than desired is a possible solution, but at the sacrifice of something else. If anyone ever asks me what wheels specs they should run for headache free, looks great rears, it's 11" ET40 on 295/30/20 PS4S. It's the same bespoke to F8X specs BBS uses for their 20" LM-Rs (someone pls correct me if wrong - I'm bewildered BBS has yet to release an F8X specific LM).

In your case, you add yet another layer of variability which is the repair work. Given the above, if it makes you feel any better, you may well have had this light rubbing issue pre-accident? Only you know the full history.

Sorry I couldn't be of more help. Good luck chasing this down, man.

[f80er]

I'll figure it out.

First thing I am going to do is see if I can dial in more camber and get toe links. If that doesn't work then I'll just deal with it until the tires are done and go 255/30 305/25. Car is going back to the body shop on Tuesday and I will have them verify everything is on the up and up.