i was just wondering wether i can fit 15" rims on 3/4 ton axels. i own a 81 chevy silverado and i am running a 10 bolt front and a 14 bolt ff in the rear. are they going to rub on anything or do they fit? i was planning on 10" wide rims. any insight would be greatly apreciated. thanx.  

It all depends on the backspacing of the rims you want. Most makes of rim come with backspacing options.

My buddy runs 15x8 Hellcats on his 14bolt SF no problem.