Put a 21" 52 spoke mammoth wheel on my fxdc and now the caliper is rubbing! I'm so pissed. Anyone experience this?

 

What is the caliper rubbing on?
Can you post a photo?

 

Yeah, I've seen it before. I'm guessing it's barley making contact. If that's correct, you can probably shave enough off your caliper to give you the clearance you need. An angle grinder will make a quick & easy task of it. If you've never used one before, you should practice on something you don't care about. They're simple to use, but you should at least get a feel for it before doing your caliper. I'm sure the rubbing left marks so you know where to grind.

Good luck with that.

 

At work at the moment and don't have a picture but it's rubbing on the spokes very slightly. I ordered a PM caliper this morning hopefully that'll be a little slimmer