I mounted up some tires on the jconcepts rear buggy rims for my b4.1 and they are awful this is the spoke design wheels. the have some serious wobble, and the hole is a little big for the axle
Anyways the design is cool looking but out of the 4 in the package 3 of them where unusable, all of them are in the trash now.
The fronts seem ok, I hav e had such good luck with thier sc rims I was really disapointed in these