I'm currently running a set of pro comp mud terrains that are 33/12.50/17. i need new tires, but looking around can't seem to find too many in that size. can anyone tell me what the standard size that is comparable to these are? example 305/70/17 etc.. thanks!

 

bfg makes an all terrain in 305/65R17

 

A 305/65-17 is a 33x12.50. A 305/70-17 would be a 34x12.50 and a 315/70-17 is a 35x12.50 tire.

 

Shows the difference of tires in great detail:
http://www.1010tires.com/TireSizeCalculator.asp

Shows the difference in decent detail - but adds visual:
http://www.miata.net/garage/tirecalc.html