By the Rims & Tires Team
Compiled & reviewed by our West Georgia tire & wheel research team · Updated 2026-07-24
The Ram 1500 TRX is one of the most powerful gas-powered production trucks ever built — 702 hp from a supercharged 6.2L HEMI V8. It comes factory-equipped with 35-inch tires on 18-inch beadlock-capable wheels. It is purpose-built for high-speed desert running and aggressive off-road use. Tire selection must handle 702 hp, extreme suspension articulation, and the TRX weight of approximately 6,350 lbs.
Ram TRX tire sizes
The Ram 1500 TRX uses 325/65R18 (roughly a 35-inch-tall tire) on 18-inch wheels from the factory. The OEM tire is the Goodyear Wrangler Territory — a fitment developed specifically for the TRX.
The factory 325/65R18 is a Euro-metric size, distinct from the 35x12.50R18LT flotation size sold by most aftermarket off-road tire makers as the closest equivalent. Whichever you choose, match the load rating to the TRX's weight and power — check the door-jamb sticker for the OEM spec.
Best tires for the Ram TRX
Goodyear Wrangler Territory (325/65R18) — the factory OEM tire on the TRX and the default replacement. Purpose-engineered with input from the TRX development program. Strong mud performance, aggressive aesthetics, validated TRX-spec handling.
BFGoodrich Mud-Terrain T/A KM3 (35x12.50R18LT) — the leading aftermarket MT for TRX owners who do serious off-road. Outstanding cut and chip resistance, excellent mud self-cleaning, strong rock performance. A common upgrade for TRX owners who use the truck hard.
Nitto Ridge Grappler (35x12.50R18LT) — hybrid MT/AT for TRX owners who want off-road capability with better road manners and lower noise. Less aggressive than the KM3. Excellent if the TRX sees more pavement than desert.
Frequently asked
What tire size does the Ram 1500 TRX use?
325/65R18 (commonly cross-shopped with the 35x12.50R18LT aftermarket flotation size) on 18-inch wheels. OEM: Goodyear Wrangler Territory.
How much do Ram TRX tires cost?
325/65R18 (or 35x12.50R18LT aftermarket): $280 to $420 per tire. A full set of four installed runs $1,120 to $1,680.
How long do tires last on a Ram TRX?
Not long by normal-truck standards. The TRX makes big power and rides on an aggressive, softer off-road compound, so hard launches, desert running, and even spirited street driving chew through tread fast. Rotating on schedule and keeping pressures right helps, but this is a truck built for performance, and the tires pay for it.
Should I keep the factory tire or switch to an aftermarket off-road tire?
If you run the TRX the way it was built, on high-speed desert and open terrain, the factory-developed tire is tuned for exactly that and hard to beat. If you do more rock, mud, and technical trail work, a dedicated mud-terrain gives better bite at the cost of noise and highway wear. A hybrid tire splits the difference for owners who see more pavement than sand.
Do I need to replace all four TRX tires at once?
On a high-power four-wheel-drive truck like the TRX, matched tread across all four keeps the drivetrain from fighting different rolling diameters, so replacing the set together is the right move. If a single tire is damaged early and the rest are near-new, a close-matched replacement can bridge it. Otherwise, do the set and rotate to keep the wear even.
Keep reading
Last updated 2026-07-24. General guidance only — confirm specifics with a local shop for your exact vehicle.