I am running E30 M3 suspension on my non-M so I have the opportunity to add roll center spacers to the front, and of course raise the subframe in the rear. The car is a dedicated track car (HPDE), but not being built to any rule book. I am running H&R Race springs. It is easy to tell I could benefit from the spacers in the front just looking at the control arms. My questions are:
1) I am running 16" wheels. Measuring the clearance in the front, it looks like I MIGHT be able to run a 19mm roll center spacer, but it would be very tight. Should I just stick with the 13mm to give breathing room in case I change wheels down the road?
2) Is it worth raising the rear subframe 12mm when running H&R Race on a track car?
I don't remember my last alignment specs, but I remember the rear had more camber than the front. I can only get so much out of the front before the spring hats impact the strut tower, due to the stock diameter spring. I don't plan to go to coilovers yet. It seems like raising the rear subframe would help balance out the camber, as I'd rather have more in the front. I'd like at LEAST 2.5* in the front, and 1.5-2* in the rear. My concern is the conflicting information I've read about how much the 12mm risers affect the camber. I've read as little at 0.5*, and as much as 4.5*.
1) I am running 16" wheels. Measuring the clearance in the front, it looks like I MIGHT be able to run a 19mm roll center spacer, but it would be very tight. Should I just stick with the 13mm to give breathing room in case I change wheels down the road?
2) Is it worth raising the rear subframe 12mm when running H&R Race on a track car?
I don't remember my last alignment specs, but I remember the rear had more camber than the front. I can only get so much out of the front before the spring hats impact the strut tower, due to the stock diameter spring. I don't plan to go to coilovers yet. It seems like raising the rear subframe would help balance out the camber, as I'd rather have more in the front. I'd like at LEAST 2.5* in the front, and 1.5-2* in the rear. My concern is the conflicting information I've read about how much the 12mm risers affect the camber. I've read as little at 0.5*, and as much as 4.5*.
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