Quote:
Originally Posted by Joe@ApexRaceParts
It is very possible to fit profile 2 EC-7s on a Z4 M as long as negative camber (camber plates) and a suspension that can properly clear the wheel and tire are introduced into the equation. It is important that the lower spring perch remain above the tire. If the spring or perch is next to the tire, then a thick spacer may be required for clearance which makes the fitment far too aggressive. A 5mm spacer would be acceptable, but anything thicker would push the setup too far out. The stock strut’s integrated lower spring perch can clear the 265 setup, so a simple lowering spring and camber plate install can make for a very ideal track setup on the Z4 M. Many coilovers use long springs, helper/tender springs, or cone shaped springs. These may have to be replaced with a single shorter spring usually 6-5″ in length to guarantee that the perch remains above the tire.
On this car we used an 18x9.5" ET43 (Profile 2) with a 12mm spacer and a 265/35/18 tire. This made the wheel effectively an 18x9.5" ET31. As long as you have about -2 degrees camber an 18x9" ET31 could also be used in the front with a 245/40/18 tire.
An 18x9.5" ET35 can also be used without a spacer in the front with a 265/35/18 tire and -2.5 to -3 degrees negative camber. Like below:
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So the 18x9" ET31 should fit ok with about -2 camber and a 245/40 tire even without a spacer correct ?