I'm looking to purchase Cup 4 wheels with tires, anyone know if these will fit?
Front: 8x18 ET 54 with 225/40/18
Rear: 10x18 ET 40 with 245/40/18
BTW, I have 21mm spacers if that helps with the offset.

 

Just downloaded AO's Wheel Fit Calc and these will NOT fit. Thanks AO.

 

ill have to check what ones i have. got mine from tire rack, sales guy named Damon. he knows what ill fit and won't. i think thats the same ones i have on mine...

 

If you remove your rear spacers they will fit. You would have to either cut your wheel studs or put on open end nuts, then your covered ones. Personally I wouldn't have 245's on 10" wheels they would look really stretched. 265/35's would be better.

 

Ducman, that would be great if you would let me know. As I wrote above according to what I've calculated they won't fit.

Ted, I thought the same thing but think maybe the seller has listed the incorrect rear tire size as the pics don't show the tire stretched at all. Regarding the spacers and studs they're not on the car yet so the stud length wouldn't be a problem.

 

Oh OK I thought your 85 had the long studs and factory spacers like mine. Everything should be good to go! 54 offset on front is not optimal but will work.

 

i have 8x18 ET54 out front, and 10x18 ET 58 out back.

 

Yea, these are 40 et's in the back. I can't see how they'll fit. Thanks for the help.

 

I had 275/35's on et 45 11" wheels and they fit. Tight but they fit. You can go up to 265 on 10" et 40 without rolling the fenders.

 

How about these Cup 4s in Panamera sizing?

 

YEP. I believe so. Panamera wheels go very well on a 928. Except the 19" models might be pushing it...