Rubbing with 10mm spacer!

[ortho281]

Anyone else experiencing rubbing with 10 mm rear spacers? After switching from Eibach springs to KW adj sleeves, I noticed that my rear tires are now rubbing the rear bumper. The rear is now 0.5'' lower than height with the Eibach springs (13.0" from hub center to fender). Alignment is same as previous (camber -2.5f/-2.0r). I have since switched to using a 5 mm spacer instead, but prefer the look of the 10 mm spacer. MS does not make a 8 mm spacer and I dont want to combine 3+5 mm spacers because wheel will not longer be centered by hub.

Any suggestion? Thanks!

[THE TECH]

Car is too low. Never heard of rubbing with a 10mm spacer.

[ortho281]

Originally Posted by THE TECH

Car is too low. Never heard of rubbing with a 10mm spacer.

I forgot to mention that pic was taken on an incline to show rubbing. I'm lowered max amount (13.0'') recommended by KW.

[THE TECH]

Originally Posted by ortho281

I forgot to mention that pic was taken on an incline to show rubbing. I'm lowered max amount (13.0'') recommended by KW.

I assume you mean 1.3"? 1.2" is what KW lists as the maximum safe drop. I would check your measurements and go from there.

[JC919]

Originally Posted by ortho281

MS does not make a 8 mm spacer and I dont want to combine 3+5 mm spacers because wheel will not longer be centered by hub.

Any suggestion? Thanks!

iND made me a set of 8mm spacers for my rears a few years back to run 18x10 with 285/35s. I'd originally had 12mm spacers on the car before switching to that wheel/tire combo.

[bobs619]

perhaps the toe needs adjustment?

[ortho281]

Originally Posted by THE TECH

I assume you mean 1.3"? 1.2" is what KW lists as the maximum safe drop. I would check your measurements and go from there.

Thanks! I did. The 13.0'' is measured from center of hub to edge of fender (recommended by KW). This mesurement avoids variances from different tire/wheel sizes. The rubbing only occurs when going up steep inclines (ie my driveway) at an angle to avoid scraping spoiler.

Originally Posted by JC919

iND made me a set of 8mm spacers for my rears a few years back to run 18x10 with 285/35s. I'd originally had 12mm spacers on the car before switching to that wheel/tire combo.

Thanks! Maybe I can take a pair of my 10 mm spacers to a machine shop and have them trim the backs 2 mm? Not sure how this would affect fitting over the hub.

Originally Posted by bobs619

perhaps the toe needs adjustment?

Thanks! I had alignment done (3 wks ago) after switching to the KW adj sleeve kit. Alignment was put back to same specs as I had previously. The Eibach springs raised the rear much more and so this rubbing did not occur.

[Superfly_M3]

Really odd. A friend of mine has the same tire as you TE 37 18x10 ET 27 (i believe) with 285/35/18 and he had no rubbing issues ... especially in the back near the bumper. His car is slammed too. Something is off.

[ortho281]

Originally Posted by Superfly_M3

Really odd. A friend of mine has the same tire as you TE 37 18x10 ET 27 (i believe) with 285/35/18 and he had no rubbing issues ... especially in the back near the bumper. His car is slammed too. Something is off.

Is he running spacers and what rear camber is he running. I may have to stick with the 5 mm spacer or reduce camber. The fender has plenty of clearance. It is just the rear bumper on both sides, but worse on left. I will get the alignment checked again soon.

[Z K]

I am rubbing in the back with 10mm spacers on stock sized 265 tires. My car is nowhere near as low as the OP's car but rubs when cornering on track.

I have about 1/2 inch fender gap between the rear wheel and fender. Does not rub under normal driving. Running 2 degrees rear negative camber.

Here is my original post about it:

http://www.m3post.com/forums/showpos...&postcount=372

[Vic311]

Are those 20s? I wouldn't use 5mm spacers..they aren't hub centric..you should raise the car up.

[ortho281]

Originally Posted by Z K

I am rubbing in the back with 10mm spacers on stock sized 265 tires. My car is nowhere near as low as the OP's car but rubs when cornering on track.

I have about 1/2 inch fender gap between the rear wheel and fender. Does not rub under normal driving. Running 2 degrees rear negative camber.

Here is my original post about it:

http://www.m3post.com/forums/showpos...&postcount=372

Thanks! Glad to know I'm not the only one. I think this is due to having so much negative camber which pushes lower part of tire outwards which rubs rear bumper under load. I have been considering reducing camber to -2.3f/-1.8r because of excessive inside tire wear. This may allow me to run 10mm spacers in the rear without rubbing.

Originally Posted by Vic311

Are those 20s? I wouldn't use 5mm spacers..they aren't hub centric..you should raise the car up.

No, OEM 19's with 265 PSS's. Yes, they are not hub centric, but the OEM 220M's and my Arc-8's are still able to center on hub with the 5mm spacers. I know some wheels however, will not center with 5mm spacers. I will most likely reduce the amount of camber and go back to using 10mm spacers in front and rear.

Here is a pic of stance with 5mm spacers on the rear. Not as flush but I'm getting used to it.

[Z K]

Originally Posted by ortho281

Thanks! Glad to know I'm not the only one. I think this is due to having so much negative camber which pushes lower part of tire outwards which rubs rear bumper under load. I have been considering reducing camber to -2.3f/-1.8r because of excessive inside tire wear. This may allow me to run 10mm spacers in the rear without rubbing.



No, OEM 19's with 265 PSS's. Yes, they are not hub centric, but the OEM 220M's and my Arc-8's are still able to center on hub with the 5mm spacers. I know some wheels however, will not center with 5mm spacers. I will most likely reduce the amount of camber and go back to using 10mm spacers in front and rear.

Here is a pic of stance with 5mm spacers on the rear. Not as flush but I'm getting used to it.

If you look under the rear fender, you will see that the fender liner where the fender meets the rear bumper sticks out. This is where it is rubbing on my car. I don't think it has to do with negative rear camber.

[ortho281]

Originally Posted by Z K

If you look under the rear fender, you will see that the fender liner where the fender meets the rear bumper sticks out. This is where it is rubbing on my car. I don't think it has to do with negative rear camber.

Thanks! I have not checked my fender liner, but now that you mentioned yours is rubbing there I will also check mine. You can see from the first pic I posted that the PSS 265's on OEM 220M's with 10 mm spacers is rubbing the inner lip of the rear bumper.

[ortho281]

Originally Posted by Z K

If you look under the rear fender, you will see that the fender liner where the fender meets the rear bumper sticks out. This is where it is rubbing on my car. I don't think it has to do with negative rear camber.

Z K, I checked my rear fender liners and there is rubbing where you mentioned yours was rubbing. The rubbing on both the fender lip and liner is very light. Since the tire is not being damaged by this rubbing, I will most likely just keep an eye on it.

[a burrito]

I have zcp wheels with 10mm spacer in the back and I am rubbing when i go on really big dips.. The only reason is because I'm running wider tires (advan ad08). I never rubbed with the ps2's I had stock + 10mm spacers. I have pss's on reserve in stock sizes and they don't run as wide as the ad08's, it may be your camber?

[Z K]

Originally Posted by ortho281

Z K, I checked my rear fender liners and there is rubbing where you mentioned yours was rubbing. The rubbing on both the fender lip and liner is very light. Since the tire is not being damaged by this rubbing, I will most likely just keep an eye on it.

It looks like the liner design is different on the E90 and E92. My fender liner sticks out more... or is it the angle of the photo? I get scrape marks on the sidewall of my tire from the rubbing but it is just cosmetic so far. Again, only rubs on track/autocross, no rubbing on the street. I cut the liner a bit for clearance. It rubs less now but still happens.

Originally Posted by a burrito

I have zcp wheels with 10mm spacer in the back and I am rubbing when i go on really big dips.. The only reason is because I'm running wider tires (advan ad08). I never rubbed with the ps2's I had stock + 10mm spacers. I have pss's on reserve in stock sizes and they don't run as wide as the ad08's, it may be your camber?

It is definitely tire dependant! I had the same set up with PS2 and it never rubbed. Now it rubs with PSS tires which runs wider and is more square.

I am leaning towards using a 5mm spacer instead of the 10mm. I am ok for now but I can't run any wider tire fitment as it is now and afraid of tearing up my tire from rubbing when on track.

[ortho281]

Originally Posted by a burrito

I have zcp wheels with 10mm spacer in the back and I am rubbing when i go on really big dips.. The only reason is because I'm running wider tires (advan ad08). I never rubbed with the ps2's I had stock + 10mm spacers. I have pss's on reserve in stock sizes and they don't run as wide as the ad08's, it may be your camber?

My rubbing is occurring with the PSS in stock sizes. The rubbing does not occur with my NT01's due to not running a spacer and the smaller diameter.

Originally Posted by Z K

It looks like the liner design is different on the E90 and E92. My fender liner sticks out more... or is it the angle of the photo? I get scrape marks on the sidewall of my tire from the rubbing but it is just cosmetic so far. Again, only rubs on track/autocross, no rubbing on the street. I cut the liner a bit for clearance. It rubs less now but still happens.



It is definitely tire dependant! I had the same set up with PS2 and it never rubbed. Now it rubs with PSS tires which runs wider and is more square.

I am leaning towards using a 5mm spacer instead of the 10mm. I am ok for now but I can't run any wider tire fitment as it is now and afraid of tearing up my tire from rubbing when on track.

I agree, some tires are more likely to rub than others due to thread width and shape of shoulders. I have ran 5 mm spacers previously for some time without any problems. I like the hub-centric 10 mm spacers, but would rather run the 5mm and not have to raise car back to the previous height.

[1MOREMOD]

are you switching on and off the spacers when going to the track? who cares if its 5mm less flush if you save having to deal with the hastle every track day.

[bobs619]

I have 10mm spacers with zcp wheels on p-zeros. That's running -2 camber and 0 toe and max low on kw v3. No rubbing.

[ortho281]

Originally Posted by 1MOREMOD

are you switching on and off the spacers when going to the track? who cares if its 5mm less flush if you save having to deal with the hastle every track day.

Good point! Actually, the 10mm spacers looks perfect IMO with 220M's, and -2.0 camber. The wheels disappear when not running spacers with that much camber.

Originally Posted by bobs619

I have 10mm spacers with zcp wheels on p-zeros. That's running -2 camber and 0 toe and max low on kw v3. No rubbing.

I guess it's just my luck! I will re-check my alignment soon. But it was re-aligned after installing KW S/O's.