I have run my 35" dynapro MT's with no spacers and no lift. They rubbed up front at full lock. I threw in a 3" suspension lift shortly after and later on added spacers, but I still towed 20,000 pounds without the spacers for a few months.
A forum community dedicated to all things Cummins Diesel! Originally founded for owners and enthusiasts of Cummins powered Dodge pickups, the Cummins Forum has expanded to include ALL Cummins Engine applications! Come join the discussion about reviews, drivetrain swaps, turbos, modifications, classifieds, builds, troubleshooting, maintenance, and more!