Need advice on wheel fitment & tire sizes on Z4 e89..

[Bmurata90]

Hey guys! So, I'm getting 18" 8.5 30+ in front and 18" 9.5 22+ rear..

From what I understand, the front should be pretty flush. The rear should be aggressive and stick out a touch, which means I'll have to adjust camber/roll the fenders and modify the wheel well lining. Is my knowledge sound? I've gotten varied responses on stock wheel offsets for the e89, so I'm here to get a solid understanding on what I should do. Should I just suck it up and get 35+ in the rear? I wanted the wheel lip to be larger which is why I want the 22+ offset..

Any input would be greatly appreciated!

Thanks and have a great day

[7thGear]

I've looked at the wheel specs for every OEM wheel that was offered on the e89, and every one has an offset of 29 front, 40 rear. There, it's official. So you should be okay in the front, but there's an 18mm difference in rear offset with what you're proposing, which is about 3/4". That's a lot to make up with negative camber and rolled fenders.

[Bmurata90]

Originally Posted by 7thGear

I've looked at the wheel specs for every OEM wheel that was offered on the e89, and every one has an offset of 29 front, 40 rear. There, it's official. So you should be okay in the front, but there's an 18mm difference in rear offset with what you're proposing, which is about 3/4". That's a lot to make up with negative camber and rolled fenders.

Thanks a lot for passing on the knowledge! I thought the rear was 29 as well, so i figured the 22 wouldn't be too bad. Obviously wrong.. Got the 35s instead. You have no idea how much this helps! Thanks again

[Bob20124]

You'll be fine. I'm running fronts 8.5x18 ET 30 with 245x40x18 PS4s. rears 9.5x18 ET 35 with 275x35x18 PS4s. Wheels are Flow 1 F3's. Stock non adaptive suspension, all good.

[Bmurata90]

Originally Posted by Bob20124

You'll be fine. I'm running fronts 8.5x18 ET 30 with 245x40x18 PS4s. rears 9.5x18 ET 35 with 275x35x18 PS4s. Wheels are Flow 1 F3's. Stock non adaptive suspension, all good.

Very nice! Thanks for the reassurance. I'm going to use your tire format since it looks amazing. Your Z4 is an absolute beauty! Great job and thanks again my friend. Really appreciate you folks!