I just picked up Sarin's (maximaSE86) old U11 rear end setup recently...tried to fit on another U11 calipers on them, no luck. the rotors were 11".. AFAIK, the U11 and U12 shares the same rear rotor size of 10". I went to check with a local NAPA warehouse and all they got were 10" as well for 85-88 models.

the 11" rotors fits fine, even the dust shield fits fine behind it. So, since it looks stock, I'm wondering if anyone else got this 11" rear rotors? would be interesting to have some brake on oversteer right before the bends.

for now, I'm running the new 10" in the rear end (@ 20 bucks a piece my price... I guess it's an ok thing..considering it's a rotor + hub assy, minus bearings).

 

Yeah, I'm still finding that wierd. How mine is mysteriously larger. If we can get a couple people to measure thiers, that would answer the question. I would, but I have 92 SE brakes in the rear now.

S