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Go Back   E46Fanatics > Tuning & Tech > Suspension & Braking

Suspension & Braking
Have some questions about suspension or brake setups for your E46 BMW? Get all your answers here!

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Old 04-19-2013, 05:11 PM   #21
Alex323Ci
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sounds like the wheel offset. (which is how far the wheel is pushed in/or out from the mounting face).

i'd check the marking on the inside(backside) of the wheel and see. often offset is listed as EP (+/- mm)
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Old 04-19-2013, 09:25 PM   #22
HacksawMark
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Quote:
Originally Posted by Dave1027 View Post
Yep. Should probably have 255s on the rear.
I think you meant 235s....
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Old 04-20-2013, 10:22 AM   #23
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Originally Posted by hacksawmark View Post
I think you meant 235s....
No. 255/40 on the rears are a match for 225/45 on fronts in a staggered setup.
225/45/17
255/40/17
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Old 04-20-2013, 07:35 PM   #24
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Quote:
Originally Posted by Dave1027 View Post
No. 255/40 on the rears are a match for 225/45 on fronts in a staggered setup.
225/45/17
255/40/17
The OEM tire size for staggered M68s are actually 225/45R17 front and 245/40R17 in the rear
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Old 04-21-2013, 11:43 AM   #25
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Originally Posted by jdstrickland View Post
Style 68s come on the E46 M3, the front is 7.5x17, ET-41, the rear is 8.5x17, ET-50. The tire size is 225/45x17 and 245/40x17. The weight of the rims is 9.5 and 9.92 kg, respectively.

The front should not rub at all on any E46 or E36, the rears might rub on non-M cars because the M3 has fenders that buldge out to accomodate the added width of the tire package. Having said that, the rear Style 68s should fit a mere mortal E46 with minimal effort. It may be required to roll the fenders in the back to create a little more space between the tire and the fender, there should be absoulutely nothing required for the front tires to fit.

The M3 with winter package should have the 7.5x17 (the fronts) on all four corners, so if you have 8.5x17s, they're not from a winter package.

Look here for more information of the factory tire packages and the specs for them.
That is the offset for the non-M offset M68s, not the M3 version.

The M winter version is 17"x7.5" ET25 in the rear, which may rub in the back on a non-M E46.

http://realoem.com/bmw/showparts.do?...89&hg=36&fg=15

Quote:
Originally Posted by hacksawmark View Post
I think you meant 235s....
Quote:
Originally Posted by Dave1027 View Post
No. 255/40 on the rears are a match for 225/45 on fronts in a staggered setup.
225/45/17
255/40/17
Quote:
Originally Posted by TT330i View Post
The OEM tire size for staggered M68s are actually 225/45R17 front and 245/40R17 in the rear
Yes, OE is 245/40 rear 225/45 front. But on the 18s, BMW used 255/35 and 225/45, so 255/40 17 would be fine. 235/40/17 is even fine as long as both tires on an axle are the same size.
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Old 04-21-2013, 01:23 PM   #26
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Like jdstrickland already said, if he has staggered setup with 8.5" on the rear, he doesn't have ET25 because that was only made with the 7.5" wheels. In the original seller post they also say it was a staggered setup. Basically, he shouldn't be rubbing regardless since that is a stock wheel size for the sport package and he's even running a smaller tire than recommended in the rear. Although different tire sizes will work so long as it's not too wide and has the same diameter, the "correct" manufacturer size for this wheel remains unchanged.
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Old 04-22-2013, 12:55 PM   #27
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Originally Posted by TT330i View Post
The OEM tire size for staggered M68s are actually 225/45R17 front and 245/40R17 in the rear
255/40 are a better match as far as DSC is concerned. I also think the 255/40 on the rear would look better too. The stretch would be correct.
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Old 04-24-2013, 08:01 PM   #28
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Sorry to keep you guys waiting, I've got family in the hospital so I won't be able to get home and take a wheel out until its done, should be 2 or 3 days.

as for the 255 size, if its rubbing on the fender now, 255 may be too wide. However tire sizes aren't my area of expertise.

As for rolling the fender, I'm not very firmiliar with how that's done (I know you have to use a heat gun for the paint and roll from the inside but I don't feel comfortable)

Thanks for all the help so far, sorry I couldn't get the info to you guys sooner with the EP #
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Old 04-24-2013, 10:39 PM   #29
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Quote:
Originally Posted by hacksawmark View Post
I think you meant 235s....
Quote:
Originally Posted by Dave1027 View Post
No. 255/40 on the rears are a match for 225/45 on fronts in a staggered setup.
225/45/17
255/40/17
I stand corrected!

Quote:
Originally Posted by Dave1027 View Post
255/40 are a better match as far as DSC is concerned. I also think the 255/40 on the rear would look better too. The stretch would be correct.
I agree. There is less of a difference with this set-up.
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