I have an 01 3500, I have 235/85s on currently and I am looking to switch to 285/75. I have a concern about droping to the load range D though, Is that going to be a heavy enough sidewall. And I need to know if the 285s well even fit without a leveling kit, what is the tallest tire I can put in there with the leveling kit and without? And one more for the smart ones, what kind of drop well I see in rpms with the 285s. Right now I turn 2000 rpms at 69-70 mph. I have a 3.55 rearend with a five speed. Thanks<br>Heath

 

try here http://www.dodgeram.org/tech/specs/Ramspecs.htm