i currently have 275 60 r20s on my 2012 ram 1500. i want to drop to 18 inch rims because no one here but the dealer carries my tire and i hate the factor tires. i want to keep the same height in tires but dont know what size in 18 will be the same size as the 20s im running now.
Perhaps you could convert to the 17" 8 lug wheels used on the 2500 and 3500 Rams. Tire diameter is 33". Have you talked to your Dodge dealer, btw? Mine has pretty competitive prices on tires.