2010 - 2013 Ram 2500 Wheel and Tire fitment Information

        When fitting aftermarket wheels and tires, choosing the correct combination makes all the difference. The main objective most of us will be after, is to fit larger than OEM size tires. Installing our most common suspension components and following our guide here, will help you fit the most common larger size tires, with the least amount of drama.

Read This Below Note, Before Continuing

     The below fitment information pertains to trucks with no lift, a Leveling Kit, our 3” lift system, etc, as they all clear the same size larger tire. That detail might surprise many reading this, but on these Ram Trucks a Leveling Kit does not make you clear bigger tires better than a bone stock truck. If you want to know more about this, there is more detailed reading about 5 paragraphs down….

Fitting 35” tires

     The stock truck off the Dealer lot comes with a metric version of a 34”x10.5” tire. With the stock wheels, you can fit a 35”x12.5 wide tire with only mild rub at full steering lock, on the upper control arm and the OEM Sway Bar. Add our High Clearance Control Arms and Swaybar, and there will be no rub anywhere. Add +18mm to +25mm wheels, and there will be no rub on the OEM control arms or OEM Sway Bar, but you will need to trim the fender liner plastic a bit. Add our High Clearance Control Arms, Sway Bar, and +18mm to +25mm offset wheels, and 35’s will clear everywhere with no rub or trimming needed.

Fitting 37” tires

     To fit 37’s no matter what, you will need +18mm to +25mm offset wheels so that you have a tolerable turning radius. With only these noted wheels you can fit a 37”x12.5 wide tire with just a slight rub at full steering lock on the upper control arm and OEM Sway Bar, but you will be doing substantial trimming of the fender liner and metal seam behind it. Add our High Clearance Control Arms and Swaybar, with the noted offset wheels, and there will be no full-lock rub anywhere, but you will still need to trim a bit of the plastic liner. Go with 13.5” wide 37” tires and you will need to trim a bit more of the liner and also some of the hidden metal seam behind it.

Fitting larger than 37” tires

     We really don’t suggest this unless planning really heavy trimming, and this trimming may get into the outer fender painted surface, into the bumper, etc. 38”x13.5” tires would be the largest realistically possible, unless going full Fiberglass Fenders, then you can maybe squeeze in 40’s. You must also use all of our products intended to help you with clearance, and then stick to +18mm wheels so your rub at full steering lock is not terrible. Often times when being very aggressive off road, and running a 38” tire, the top of the tire can also even rub the top of the OEM wheel well opening. This is why 40’s would need glass fenders front and rear.

Rear Suspension And Clearing Larger Tires

     If you keep the un-modified OEM rear leaf springs, up to a 38” tire will clear just fine, as the OEM leaf springs only compress a small amount and they will not let the rear tire come up enough to touch the fenders. If you keep these same leaf springs but modify them with Add-A-Packs or modify the OEM Overload spring to allow the leafs to compress more, you need to stick to 35” tires if you want to drive very aggressively off-road. If only doing mild off-road driving, 37’s fit and clear fine even with modified OEM leafs, but just don’t bottom out too hard or you may rub tire on the fender frontside. If you want to fit up to 38” tires and you want to drive hard off-road, you’d need our Long Travel leaf springs. Reason being, our Long Travel Leaf Springs move the axle back about ½” to give more clearance at the front side of the fender opening, to help the tire not contact there at full bottom out.

Quick Note On Wheel Offset limits

     Some people want to make their truck very wide. For many reasons, we do not suggest doing this. The OEM wheels on Ram Trucks generally sit between +57mm and +44mm Offset. Positive offset pulls the wheel closer to the center of the truck, where less positive or negative offset makes the truck wider. The sweet spot of +18mm to +25mm wheels makes the truck a little wider than stock to help the tires clear the suspension components when turned to full lock, but not so wide the tires wipe out the fenders. Going to a 0.00mm offset wheel would be the absolute widest we’ll be somewhat OK with, and even then it’s past the sweet spot, and you’re going to be stuck with 35” tires usually. The less positive offset the harder it will be to clear the fenders when turning, so if you want to run -44mm offset wheels, more power to you, but plan on 33” diameter tires at the largest.

The 3 inch lift Myth: 3 inches of Suspension Lift Equals More Tire Clearance

     The most common lift height for Dodge Ram Trucks falls within the 0-3 inch range, and a very common misconception is that 3” of lift or a Leveling Kit by itself makes you able to fit larger tires. Unless you plan to only drive in flat parking lots at slow speed, this is completely untrue. So to be clear, a leveling kit or even a properly built high end 3” lift alone, does NOT improve tire clearance. We’ll explain why below.

     When lifting a Ram Truck’s suspension up to 3” of height, you want to retain all the upward(bump) travel you possibly can. When designing our suspension systems, retaining this travel is arguably the most important factor, as total suspension travel is KING when it comes to ride quality and suspension performance. With that in mind, this means that when you hit a bump in the road, or say a curb cutting a bit tight into a driveway, as the suspension compresses the tire moves upward to the same position it would have been before you lifted the truck. It might take a bit more force to get as high into the fender because the truck IS taller than stock, but the suspension WILL bottom out to the same OEM stock position at some point in time. If you must drive slower and stay away from bumps so that these larger tires don’t rip your fenders out, what is the point in having a truck? We are a performance suspensi