So I need new front tires and the tires shops wont touch my rims.... what types of rims could swap without too much extra cash cuz I'm sure 6 rims ain't gonna be cheap ... I have 8.25-20 tires on the Firestone rh-5's... and I'm wanting to put 9.00-20's on the rear for a little more speed with less rpm since my 8.25s now will only get me to 50mph top speed (3k.rpm)with my ratio. I would like to get my rpm down a tad at 50mph but new tires is main deal. The rh-5's are 10lug, 9in apart on center. Hub hole is 6.25" i.d. if there are easy options please let me know, I know a spot to get older truck rims and a bus garage near that might part with spare parts.

Thanks mike