Ok will LT 305/55 20's fit on a 2006 Dodge ram 2500 without rubbing and without a lift kit? you lost me when you switched it up with the 35's and 33's and such......but i did see that 33's will fit without rubbing but is that on a 20" rim or 17"?

 

That tire maybe a little wide. 12.50. Depends on the rime you are running. IE off set, back spacing.

 

So maybe go with 295/55/20?

 

That tire is a little shorter, and about 11.6 wide. The middle number is a percentage of the first. Many call it the aspect ratio. So for your tire it is 55% of the height. Try this conversion calculator it may help. I have a 12 2500 stock rims 2" level spring. I run 305/70/17. They rub at full lock. Hope this helps.


http://www.extremeterrain.com/wrangl...alculator.html

 

24" Ice Metal rims with 315 / 35 R24.

20" Fuel Maverick rims with 35 x 12.50 LT 20