Does anyone run dfferent width treads?

[3liter]

Front 225 45 17
Rear 245 40 17 1 inch wider tread / O.D. is .4 inch smaller

Both tires run on stock rim size. Tirerack says it is acceptable.

Bridgestone Potenza RE050.

I may be unhappy with this set up . I'll post results. I bought and mounted the front tires a couple of weeks ago and have the rears headed this way. When the rears get installed I'll give the results and photos.

The Z4 looks better with a slightly larger tread in the rear in my opinion. I could be wrong it's happen before.

[inTgr8r]

There is a good non-M wheel & tire discussion thread here...
http://www.zpost.com/forums/showthread.php?t=398990

[garz747]

My "other" car is an E46 330i with sport package and it came with 225-45-17 and 245-40-17 as stock setup. The rear rims are an inch wider though. You should be fine with those sizes

[3liter]

Originally Posted by garz747

My "other" car is an E46 330i with sport package and it came with 225-45-17 and 245-40-17 as stock setup. The rear rims are an inch wider though. You should be fine with those sizes

Really not much difference in a side view.

[3liter]

I think it looks better. Can't tell much difference in driving.

[unluky]

I have the sport with the staggers wheels, but I have never like how "stretched" the front tires look with the 225's. The rear 255's are perfect on the sidewall. I want to put widers up from purely for cosmetic reasons.

This makes we want to do it even more.

[zgood4u]

I'm running 245-45-18 on front and 275-40-18 on rear, no problems Michelin PSS's