mister_po

So I ordered a set of E88's from a reputable vendor and had them mounted only to find out the front wheels run extremely close to the calipers, so close that it's actually scraping on one side at the corner and caused some damage. I contacted the supplier and they ensured me that they have used the correct centers and thinks the problem is caused by the "thiner" center of my aftermarket rotors. The aftermarket rotors are Girodisc 2pc rotors and although I have my doubts I can't confirm since I don't have my stock rotors anymore to compare.

Does anyone here by any chance have / had the Girodisc and BBS setup and could confirm the fitment?

Spacers could be a easy fix but defeats the purpose of getting custom built wheels.....

Any thoughts or advice is greatly appreciated

mooty

near the edge of your wheel center you should see some serial and model numbers.
you should have 0288109, that's the center for 996

mister_po

Wow Mooty! Thank you!
will check the serial

LVDell

Further, the rotors have ZERO impact on the caliper location unless you added spacers between the caliper and wheel carrier. Then all bets are off as you have changed the dimensions they built the wheels for.

Burger

I think the question is in the rotor hat thickness. Thicker hat moves the wheel away from the caliper, thinner moves it closer. Just like a spacer.

LVDell

Ah, I see what your saying now. Can anybody confirm that Giro effectively changes the offset from stock?

mister_po

I honestly don't think the hats would make much of a difference. Have a set of rear rotors I just changed out and the hats are thin. It couldn't be much thinner than that....

mister_po

checked the serial and they are 0288108...
Could anyone with E88 confirm what centers you have?
TIA

Dervish

Will confirm number but I needed to fit 5mm spacer to fronts in order to clear caliper. Rears fit no problem.

Edit to add:
Running PF slotted front discs.
Numbers on wheel centers differ from above but are different across both fronts:
A34866 9jx18h2et50 lm130
A62921 9jx18h2et50 lm130

?

mooty

108 is 6 rear
front no good
288274 front

mister_po

Confirmed with BBS USA that the 108 is the wrong center for the 6 front.
Rear is good as mooty stated.
Eric and Zach at BBS have been extremely helpful and informative.

Also measured the Girodisc hat and it's the same thickness as the stock rotor at 8mm.