Hopefully this clears up some questions, or concerns you might have about running OEM 219M wheels on a E90 (non LCI or xDrive). You're more then welcome to shoot me a PM, or post a question here. Tire, and wheel experts/vendors please chime in.
Info
Car Specs:
2008 E90 328i, lowered on Eibach Pro-Kit Springs, all 4 fenders are rolled to the max, and alignment is done to factory specs.
Wheel / Tire Specs:
OEM Style 219M wheels made by BBS Germany. Taken directly off of a 2008 E92 M3. Michelin Pilot Sport tires.
F: ET29 18x8.5 245/40/18
R: ET23 18x9.5 265/40/18
1. The front tires have never rubbed, regardless of how hard I drive, stop, or corner.
2. The rear tires rub only over large dips, expressway bridges major uneven road surface changes or when going up inverted driveways at an angle. (This is worse with 4 passengers.) When it's just me in the car driving on relatively flat roads, and expressways, it rarely rubs.
3. I don't have experience running this set up on the E92 or LCI E90 (rear track was incresed by 18mm overall - 8mm per side), so I can't answer questions about fitment. It may be best to contact a board sponsor, or other member to discuss fitment.
My plan to make this set up work>>
Sumitomo HTR Z III
F: 245/40/18
R: 265/35/18
http://www.tirerack.com/tires/tires....odel=HTR+Z+III
I'm going to miss how the Michelin PS tires handle, but these Sumitomo tires have been well praised by the BMW community, and are a good value.
1. Change only the rear tire size. I'm going to 265 width, but go with a lower aspect ratio (265/35/18). Right now the outside diameter of a Michelin Pilot Sport 265/40/18 tire is 26.35 inches. By going down to 265/35/18 the outside diameter drops about 1 inch to 25.3 inches. That one inch should give me just the right amount of clearance so I won't rub.
Also, the tires look a bit too chunky, or bulky in the rear for a non-M E90. While running 265/30/19 tires I used to have about a 1.5 finger gap in the rear. Now it's about a quarter of an inch gap.
2. Keep the same size front tires as the Michelin Pilot Sport 245/40/18 tires. Even with the increased outside rolling diameter, the car handles well, and feel planted under hard cornering.
3. Just for comparison - My stock OEM Style 161 17" front wheels with 225/45/17 tires have an outside diameter of 24.97.
The new tires increase the outside rolling diamter by about .75 inches. Stock OEM Style 161 17" rear wheels with 255/40/17 is 25.03.
The new tires increase the outside rolling diameter by .27 inches. This isn't too bad, and won't throw off the transmission at all.
Updates:
Post
#11:
http://www.e90post.com/forums/showpo...p;postcount=11
#17:
http://www.e90post.com/forums/showpo...p;postcount=17
#32:
http://www.e90post.com/forums/showpo...p;postcount=32
#49:
http://www.e90post.com/forums/showpo...p;postcount=49
Pics with new tires mounted:
http://www.e90post.com/forums/showthread.php?t=307334
http://www.e90post.com/forums/showthread.php?t=359254
http://www.e90post.com/forums/showthread.php?t=416259
Pics of my E90 with stock Michelin tires
You can see what the fender liner has done to the tire. Rubbed a good portion of the tire away. This is after about 3 weeks of driving. These tires have about 15% tread life left.
