OK this will be short and sweet as I can make it. When I bought my wheels the center caps from Rota did not fit. So after a while I got sick of looking at rusty axle and grease cap and made them fit.
Here is how I did it for a few bucks.
First, buy 4 of the chrome 1 3/4"Cock Hole Covers (I kid not) from the plumbing section, and a pack of 4 1 7/8" rubber furniture bumpstops.
You need to cut out the backs of the stoppers to make more clearance for the axles. The furniture bumpstops, I also ccut out the middles.
I removed the stock Rota stickers/middles and cut out a hole big enough for the axle to fir through for the fronts, and big enough to clear the grease hubs for the rears (if I were to do it again I would make big holes on all 4 for tire rotation purposes - otherwise you have to switch the center caps when you rotate your tires - PITA and the retaining clip thingeys break easily)
I used epoxy to glue the bumps to the stoppers together and then glued them to the center caps.
Voila. Pimpness.
