Well, I ran into a problem with converting my car over to C-5 brakes, I put 17" rims on, but, I have a back space problem. The rims are 0mm backspace which is for the car, but with the new rims that are almost 13" in diameter the caliper hits rim. Looks like I need a 1/2" or just alittle smaller to make it work. Any suggestions on where to get them? Thanks..

 

I found the spacers needed from ezaccessory.com. They are 1/2" thick aluminum with the bolt pattern of 4 1/2"-5".

 

Don't know how long your wheel studs are but I'd think about getting/installing longer ones if you're going to put a 1/2" spacer between the wheel and the drum/rotor. If you don't you won't have much stud in the lugnuts.