widest tire
 

whats the widest tire i can run with my stock 02 dodge dually wheels.

dad had 285's on his

i thought that was the height of the tire not the width?

nope, thats the width of the tire in mm

first number is width in mm secon number is tire sidewall in comparison to the width the third is contruction type radial or bias and the last number is the rim size
then you have the extended numbers for load range here is a good chart explaining that
tire sizes:tu:

now as far aswidest tire are you going for street legal?

yeah just want to go to a bigger tire than stock and dont want the duals to rub

Tire dealer is the correct person who will respond you with great answer because he knows what fits best and what works best so consult tire dealer or tire installer for great information on this, because every time when i am facing any problems related to my Recreational Vehicles tires, i am consulting them only for better results.