Quote:
Originally Posted by Expert@ApexRaceParts
Thank you for the post! The 18x9.5 ET35 is going to be quite aggressive up front, and not recommended. For your Z4M, we recommend the following fitment as a direct bolt on:
- F: 18x8.5" ET38 (Profile 1) - 235/40-18
- R: 18x9.5 et22 (Profile 3) - 275/35-18
For customers wanting to run a concave wheel up front, then we recommend the following fitment:
- F: 18x9" ET30 (Profile 3) - 235/40-18 (negative camber needed)
- R: 18x9.5" ET22 (Profile 3) - 275/35-18
You could reuse your original tires, but they will be quite a bit stretched. The front 18x9" ET30 will be close to the outer fenders on the Z4M with 235/40-18 tires and would require around -1.8 degrees of camber or more. The 18x10 ET25 will also work in the rear, but it will be very close to the fender. Depending on what tire brand/compound you use and the ride height, you may need a minor fender roll.
Let me know if you have any other questions! I'm happy to assist.
-Matt |
Matt, thank you for your response.
My tires are brand new so I will need to keep them.
225/45/18 F
255/40/18 R
You are saying that I can use a 18x9 ET30 with a - 1.8 camber correction up front.
In the rear a 18x10 ET25 set up could work, again with existing tires.
Tires are BF Goodrich g-force A/S.
I'm trying to see if I can get away with the concave look up front and rear without rolling my fenders.
Last, do you have any images you could share that illustrate concave in the rear and regular flat face up front in case I have to go that route?