325/65R18 tires
Prices, best picks and current deals for 325/65R18, a pickup trucks size fitted to Ram 1500 TRX, Ram 2500 Power Wagon and more.
Yes, this fits your Ram 1500 TRX. 325/65R18 is the original size on the 2021-2024 Ram 1500 TRX.
The sticker inside the driver's door is still the final word, because trim and wheel package can change the size. Back to every Ram 1500 TRX size.
What 325/65R18 tires cost
Ironman All Country M/T
Lowest price that still brakes and wears acceptably. Fine for a second car or low annual mileage.
Toyo Open Country A/T III
The value sweet spot: long mileage warranty, solid wet grip, sane price.
Nitto Ridge Grappler
Best wet and snow braking, quietest ride, longest tread life. Worth it if you keep the car.
Prices are per tire, before mounting and balancing. A set of four in the mid range comes to roughly $1,152 to $1,592, and a brand rebate can take another $50 to $110 off, see this month's deals.
Cheapest 325/65R18 right now
RBP Repulsor A/T Plateau 325/65R18 121/118T Off-Road Light Truck Tires
$212.96per tire $851.84 for a set of four
21 tires in this size, priced straight from SimpleTire's own product feed, read 29 September 2026. Stock and prices move daily, so check the shop for today's figure.
See every 325/65R18 tire in stock at SimpleTire
About the 325/65R18 size
35 in TRX size (34.6 x 12.8 in), LT load range D/E. Few models: Goodyear Wrangler Territory AT (OE), Toyo Open Country A/T III, Nitto Ridge Grappler.
The numbers mean: 325 mm section width, sidewall height 65 % of that width, and a 18-inch rim. Overall diameter works out to about 34.6 inches. Any replacement has to match all three, and the load index and speed rating on your door sticker must be met or exceeded. Our guide on reading a tire size walks through it.
Vehicles that use 325/65R18
- Ram 1500 TRX (2021-2024)
- Ram 2500 Power Wagon (2014-2024, 33 in upsize alternative)
Confirm on the door-jamb sticker before ordering. Optional wheel packages often change the size within the same model.
Which type of 325/65R18 tire?
All-Terrain Tires
Pickup, Jeep and SUV owners who tow, drive gravel or dirt roads, or need real traction in snow and mud.
Mud-Terrain Tires
Off-road enthusiasts with lifted trucks or Jeeps that see mud, sand and rock regularly.
Highway Truck & SUV Tires
Pickup and SUV owners who commute, haul the family or tow on pavement and want quiet, long tread life and good fuel economy.
Frequently asked questions
How much do 325/65R18 tires cost?
Expect $213–$288 per tire for a budget brand, $288–$398 for a mid-range tire like the Toyo Open Country A/T III, and $398–$441 for a premium tire like the Nitto Ridge Grappler. A set of four therefore starts at about $852. Add roughly $15 to $45 per tire for mounting and balancing.
What vehicles use 325/65R18 tires?
325/65R18 is original equipment on Ram 1500 TRX (2021-2024) and Ram 2500 Power Wagon (2014-2024, 33 in upsize alternative), among others. Always confirm with the sticker inside your driver's door, because trim levels and wheel packages can change the size.
What is the best 325/65R18 tire?
For most drivers our mid-range pick, the Toyo Open Country A/T III, is the sweet spot of price and tread life. If you keep the vehicle a long time or drive in heavy rain and snow, the Nitto Ridge Grappler is worth the extra. On a tight budget the Ironman All Country M/T is a sound choice.
Can I replace just one or two 325/65R18 tires?
On a front- or rear-wheel-drive car, yes: replace in pairs on the same axle and put the newer pair on the rear. On all-wheel-drive vehicles most makers want all four replaced together, or a new tire shaved to match, because a difference in circumference strains the drivetrain.