Ram tire sizes

We cover 9 Ram models across 38 factory fitments, spanning model years 2002 to 2024. The size that turns up most often on a Ram is 35x12.50R18, followed by 35x12.50R20 and 35x12.50R22. Wheel diameters run from 16 to 24 inches, so the trim and wheel package matter as much as the model year.

Ram does not stamp an approval code on tires the way Porsche and BMW do, so any tire in the right size that meets the load index and speed rating on the door placard is a legitimate replacement. Pick on wet braking, tread life and price instead.

Pick your model below to see the size for every year and trim, what it costs from budget to premium, and which tires are worth buying in that size. If you already know your size, search by size instead, and if you are not sure where to find it, our guide on reading a tire size shows exactly where the placard sits.

Ram became a separate brand in 2010 when Stellantis's predecessor split the pickups away from Dodge, and it now sells roughly 400,000 trucks and vans a year in the United States. The 1500 is the volume model, with the 2500 and 3500 heavy duties, the ProMaster van and the TRX and Power Wagon off-road specials. Its reputation rests on ride quality, helped by the coil-spring rear suspension on the 1500, and on interior quality at the top trims.

Every fitment on this page is a truck or van size, and the spread is enormous.

Tires on a Ram

Ram stamps no approval code on its tires, so the door placard is the complete specification. The 1500 runs 265/70R17 on older Tradesman trims, 275/65R18 on current Tradesman and Big Horn, 275/55R20 or 275/60R20 on Laramie and Limited, and 285/45R22 on the Limited, with 33 and 35 inch upsizes common in the aftermarket. The heavy duties move to LT-rated sizes such as LT275/70R18 and LT275/65R20 that need 65 to 80 psi rather than a car's 35, and the 3500 dually needs six tires rather than four.

Two specials sit outside the range: the TRX runs 325/65R18, a 35 inch tire fitted from the factory, and the Power Wagon's fitments overlap with it. Fitments are square throughout, so rotation is straightforward, though on a dually the rotation pattern includes the inner rears. The single most consequential decision on a Ram is P-metric versus LT: replacing an LT tire with a P-metric one in the same nominal size drops load capacity substantially, and it is the mistake that shows up the first time a trailer is hitched.

The models that matter

The 1500 is the volume model, on 265/70R17, 275/65R18, 275/55R20, 275/60R20 or 285/45R22 depending on trim, with 275/70R18 on the Rebel and 325/65R18 on the TRX. The 2500 runs LT275/70R18 and LT275/65R20, the 3500 SRW LT275/70R18 and the 3500 DRW LT235/80R17. The ProMaster 1500 and 2500 vans use 225/75R16.

What owners find out later

A 3500 dually needs six tires, and the inner rear pair is where slow leaks go unnoticed because the valve is awkward to reach, so an extended valve or a TPMS readout is worth having. The TRX's 325/65R18 is a 35 inch tire with a very short list of replacements, and the factory tire is a specific off-road pattern rather than an all-terrain you can substitute freely. Upsizing without recalibrating the speedometer leaves the odometer under-reading, which stretches service intervals.

Ram's direct TPMS needs a relearn with a tool after rotation on most trucks, and full-size spares often carry no sensor.