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[bmw325i]

I had 9.5et33 with 275/30/19 v12's and -1.4 degrees of camber. I didn't rub at all, but like I said it was very close when the suspension is compressed. Rolling your fenders and/or adding more negative camber will take care of it.

[yenyichi]

the other thing I am very curious about is :
u run a set of 235/35/19 front, 275/35/19 rear
and your DTC still working normal?
or is the rear actually 275"30"19 ?

[slay2k]

Originally Posted by yenyichi

the other thing I am very curious about is :
u run a set of 235/35/19 front, 275/35/19 rear
and your DTC still working normal?
or is the rear actually 275"30"19 ?

DTC worked until I'd hit a big bump and it'd flash on/off. They were 275/35s, I replaced them with 265/30s and haven't had any issues since.

[Kevindshea]

Originally Posted by flip4335

YES!!

According to the tire calculator at the top of this forum, if your specs are correct, your fronts at 235/35/19 have a diameter of 25.48 inches, while the rears at 275/35/19 are at 26.58 inch diameter, over an inch taller. This is over 4 percent difference front to back, when the acceptable allowance is more like a 1-2 percent max difference.

Speedometer issues also abound. With the current setup, your speedo reads 62 mph, but you are actually only going 60 mph.

Best recommendation would be to drop the rears to 275/30/19. The fronts would still remain at 25.48 inches in diameter, while the rear diameter would drop to 25.5 inches, a mere difference of .02 inches or less than .07 percent.

You will have more room in your wheel well and won't have to roll the fenders, unless they are at an offset of less than ET25. Tire brands also play a part, with some tires meatier than others.

I used to have 235/40/18 Front, 265/35/18 Rears when I had Hankooks, but had to revert to 225/40 Front and 255/35 Rear when I switched to Michelin Pilot Super Sports! The 219M wheels on my vehicle have a front offset of 29, while the rears have ET23, which occasionally rub.

With Hankooks:


Ultimately, it is your call.

So Speedo’s on e90 as most bmw read so generous that oversized tires actually correct the error believe it or not. I run oversized tires and the speedo still reads +2 over at highway speed

[Mavus]

Originally Posted by Kevindshea

So Speedo’s on e90 as most bmw read so generous that oversized tires actually correct the error believe it or not. I run oversized tires and the speedo still reads +2 over at highway speed

code V speed indicator