How are the XTR rims ?
I'm guessing you're using 6 blot adaptors with the original Avid discs ?
Rims are holding up great
I had to use the the 6bolt adapters it was the cheapest option for me after my insuance claim. I did a bit of jiggery pokery with the insuance company and i ended up with the Epic Bike, Set of XTR wheels and 2 160mm XTR rotors (flogged on eBay).
The adapters were on £14 each from JE James and i thought it was the easiest and cheapest option for getting the wheels on the bike
I'm not sure if it would have been better to put the XTR rotors on and to use different brake calipers or adapters ? i just thought that option was the more expensive
But they are running sweet anyway