I wish we could run different wheels they're supposed to be the wheels from the kit, no reduction in size or altered in any way other than removing casing marks. After truing up the wheels I think we took about .050 off. Im needing to do some more measuring but the holes in the wheels and the axles are really loose(haven't measured yet) but what's a good difference in the two. This it's our second time building cars last year one of my boys got first and the others are wanting to win now. I think we're going to have to do a little investing in learning about
this secret oil process I've been reading about. We're running graphite and I know other are doing oil.