Be aware that the 50th Sport Classic rear wheels are 11.5 inches wide and have a 48mm offset. Adding a 15mm spacer too these wheels is like adding a 25mm spacer to the C4 Carrera Classic II wheel (11", 52 mm offset) - which in my opinion is too aggressive (as DaveGee determined) . Adding a 15mm spacer to the to the C4 Carrera Classic II is like adding a 5mm spacer to the 50th wheel - which is aggressive and brings the wheel flush. So 7mm front and 15mm back is a nice fitment for your C4.

 

Thanks for all the help, just ordered 15mm spacers for the rear from suncoast parts. I'm sure I could have done better in price, but it seems like everyone is very familiar with suncoast and they are a respectable company to work with.

 

Does anyone have a picture of the ECS 8mm spacers on the front of a C2S with the Carrera S II 20" wheels? Hopefully, on a car with PASM and otherwise stock height? Thanks!

 

I have sport PASM on a 991 Carrera S...does the 5,7,8mm up front and 10 or 15mm in the rear work? Which one should I go with?

 

Agree! And as you know, Porsche does not recommend even 5mm spacers with the Sport Techno wheels. Don't forget you need the appropriately longer lug bolts for the spacers you do get. I use 997 Carrera Classics (8x19 57 offset, 11x19 51 offset) with Pirelli Sottozeros tires for winter. I do use 7mm spacers up front for this winter setup and it works/looks great.