Thanks for the info. I guess I'll break out the ruler to figure out what backspacing I'll need. Of course 95% of people selling rims do not know/advertise the backspacing. I have a set of finned magnesium and aluminum "bullet hole" 16.5x8 x8x6.50 wheels I'm going to see which ones look better on my 76 F-250 and just look around for some used tires or go ahead and buy a set of BFG A/T's 33x12.50x16.5. Thanks again.