Wheel Clearance for M Performance BBK

[molasses917]

Hi AllNeed some advise, I'm considering upgrading to the M Performance Brake Kit (wether or not they're worth it is a different question, I just like the larger rotor and colored calipers , i'm currently running Stance SC6 19" wheels, which in theory should have more than sufficient clearance, but I just realized the design has the valve located inside the barrel instead of outside and am concerned about the valve tips hitting the calipers. I currently have the standard brake kitI measured current clearance is about 15-20mm (had to get a good measure with a simple ruler) between valve tip and clearance (see attached image), the fronts seem to have a bit more clearance, which I found a bit odd since I thought the rotors were bigger, unless I messed up the measurements. View attachment 32287If im not mistaken the difference (per side) would be:Front: 330mm to 370mm : 20mmRear: 300mm to 345mm : 22.5mmWhich means I'd have a problem of valves hitting calipers. Any thoughts on the matter is appreciated, am I calculating this correctly?

 

[maxxsp]

It is best if you have a friend with the M performance brakes who will allow you to test fit your wheels on their car.
It is not easy trying to measure brakes for aftermarket wheels as there are so many variations.

Also note although the rotor might be 40mm bigger (20mm per side) that does not necessarily mean that the caliper will stick out 20mm more per side. A different caliper design means it may sit out either less or more than 20mm.