Here are my specs:
Wheels: 18x9.5 et 35 APEX ARC8
Tires: 275/35/18 Michelin PSS
Suspension: Bilstein PSS10 with 525# Eibach front springs
Ride Height: about 3/4" lower than OEM
Camber: -2.8deg front, -1.8deg rear
I wanted a square setup on my Z4M roadster, and I wanted to know how wide I could go in the front.
I didn't see anyone running 275s in the front, it looked like 265s were the widest anyone had gone.
After doing some research and looking at tire specs, I figured I'd be able to fit 275/35/18 Michelin PSS all around on 18x9.5" APEX ARC8s.
Here they are after being mounted and balanced. All of them balanced out with very few weights.
Here you can see the difference in the new vs old fronts.
Despite being much wider, the new wheels are noticeably lighter than the OEM fronts, and much lighter than the OEM rears.
Here is the clearance in the front.
There's about 3-4mm clearance between the tire and the strut body.
About 5-6mm clearance between the wheel and strut body.
Plenty of clearance to the spring perch.
I am not running spacers.
Here are a few shots showing the front fitment. No worries at all.
Here she as at the current ride height. I believe this is about 3/4" lower than stock. The PSS tires measure 25.6in tall, OEM is 26in tall.
A few more shots
Hope this helps others to know just how wide you can go, especially if you don't like the staggered wheel and tire route and want to go for maximum grip.
Next I think I might get some 12mm spacers for the rear since they are more inset than the fronts. No worries since I already have wheel stud conversion.
