305/55R20 tires
Prices, best picks and current deals for 305/55R20, a pickup trucks size fitted to Ford F-250, Ram 2500, Toyota Tundra and more.
What 305/55R20 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, based on what the big US online retailers charge for this size. A set of four in the mid range comes to roughly $1,100 to $1,480, and a brand rebate can take another $50 to $110 off, see this month's deals.
About the 305/55R20 size
Wide 33 in aftermarket size (33.2 x 12.5 in), LT load range D/E. Needs 9-10 in wide wheels; M/T and R/T tread dominate.
The numbers mean: 305 mm section width, sidewall height 55 % of that width, and a 20-inch rim. Overall diameter works out to about 33.2 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 305/55R20
- Ford F-250 (2005-2024, 33 in upsize)
- Ram 2500 (2010-2024, upsize)
- Toyota Tundra (2007-2021, lifted upsize)
Confirm on the door-jamb sticker before ordering. Optional wheel packages often change the size within the same model.
Which type of 305/55R20 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 305/55R20 tires cost?
Expect $205–$270 per tire for a budget brand, $275–$370 for a mid-range tire like the Toyo Open Country A/T III, and $375–$505 for a premium tire like the Nitto Ridge Grappler. Add roughly $15 to $45 per tire for mounting and balancing.
What vehicles use 305/55R20 tires?
305/55R20 is original equipment on Ford F-250 (2005-2024, 33 in upsize), Ram 2500 (2010-2024, upsize) and Toyota Tundra (2007-2021, lifted upsize), 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 305/55R20 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 305/55R20 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.