I picked up a carbon wheelset, Chinese. The seller told me they didn't fit his QR with integrated brakes (rims too wide and couldn't adjust brakes). I tried the front wheel on my '13 P2 and indeed, it's too wide. Even with brake lever open the wheel won't spin. Is this a common problem with Chinese wheels? Oh, the pads I have on my P2 are stock, not made for carbon wheels. Still, will a carbon brake pad make that much of a difference?

BTW, the seller is a great guy and told me that if it won't fit he'll give me my money back, so no issues there.