I have 16x10" rims and currently im running 315/75/16 tires i swapped from my other truck but it was lifted the tires rub on the front fender wells and springs i can get a set of 285/75/16 tires for free for it but what i want to know is if a set of 285/75/16 will fit on a 10" wide rim?

 

285/75/16 = 32.8x11.2x16, and 315/75/16 = 34.6x12.4x16. They will fit, will probably have the squared off look, instead of a rounded off one. Probably not the most ideal setup, but you are getting them FREE!

 

Been running 285's for 5 years on 2 trucks - no issues. Actually we like them a little better than the wider stock tire - bit less road noise and seem to do better in mud.