Hello,
I just bought a 2010 3500 CC Dually. It has the factory wheels, but the previous owner put on a set of Nitto Trail Grapplers 35-12.5-17's. It has a 2" leveling kit up front and a 2" block in the back and what looks to be 2" wheel spacers.

I don't like the rough tread of the Nitto's and will put on a set of BFG AT's. I will leave on the leveling kit up front and take out the 2" lift the back. It is too tall to pull my 5er.

My question is this, what is the biggest Tire I can run in the back without it sticking out past the fender? What spacer would I need. I am thinking 265-70-17's?

Thanks,

 

255/85/R17

33" hight, no need for a spacer.

 

Decided to go back to stock size of 235/80-17. Put on 6 Cooper Discovery AT3s and now this thing rides like a CADDY. Could not be happier.....

Thanks,