my name is James,am new. Got a 2001 dodge 3500 x-cab 5 spd,4x4 dually diesel. I have 235-85-16. Am going to 245-75-16.Some say that I have to put a spacer on , then some say I dont . So do i have to? Let me no asap cause am wanting to order them tomorrow.thanks

 

hi
i believe the 245-75-16 was std tire for my 98.

i am installing 265-70-17 next on factory alu wheels 06 wheels

 

Welcome to the site. I believe the 245/75/16 is shorter than the 235/85/16 and you probably wont be able to tell the difference in width as the 245 is just a fraction of an inch wider.