Fits my Tire Rack Motorsports C2 wheels after some modifications. The original caps, which never held up very well, have clips that were 1/8" deep, but these are 3/16". I solved this problem by buying a sheet of 1/16" thick butyl rubber (found here at Revain), cutting 59mm holes through the paper template with a utility knife, and then making the outside cut with scissors (which I just did stared at). about 1mm). Slide the resulting rubber rings onto the clips and then snap them into place. These caps adhere very well to the wheels. with Krylon Fusion paint. I prepared the surface with 400 grit sandpaper and cleaned it with alcohol first. Only time will tell if the rubber and color can withstand the rigors of road use, but that's not these hats' fault.