LT275/70R18 tires
Prices, best picks and current deals for LT275/70R18, a pickup trucks size fitted to Ford F-250, Ford F-350 SRW, Ram 2500 and more.
Yes, this fits your Ford F-350 SRW. LT275/70R18 is the original size on the 2017-2024 Ford F-350 SRW.
The sticker inside the driver's door is still the final word, because trim and wheel package can change the size. Back to every Ford F-350 SRW size.
What LT275/70R18 tires cost
Ironman All Country A/T
Lowest price that still brakes and wears acceptably. Fine for a second car or low annual mileage.
Cooper Discoverer AT3 LT
The value sweet spot: long mileage warranty, solid wet grip, sane price.
BFGoodrich All-Terrain T/A KO3
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 $800 to $1,076, and a brand rebate can take another $50 to $110 off, see this month's deals.
Cheapest LT275/70R18 right now
Armstrong Tru-Trac HT 275/70R18 125/122S Highway Light Truck Tires
$151.96per tire $607.84 for a set of four
263 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 LT275/70R18 tire in stock at SimpleTire
About the LT275/70R18 size
The dominant HD truck size, load range E (3,640 lb per tire at 80 psi). A/T, highway and commercial tread; most popular LT size in the US.
The numbers mean: 275 mm section width, sidewall height 70 % of that width, and a 18-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 LT275/70R18
- Ford F-250 (2017-2024, XLT/Lariat)
- Ford F-350 SRW (2017-2024)
- Ram 2500 (2010-2024, Tradesman/Big Horn)
- Ram 3500 SRW (2010-2024)
- Chevrolet Silverado 2500HD (2020-2024, WT/LT)
- GMC Sierra 2500HD (2020-2024, SLE)
Confirm on the door-jamb sticker before ordering. Optional wheel packages often change the size within the same model.
Which type of LT275/70R18 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.
Frequently asked questions
How much do LT275/70R18 tires cost?
Expect $152–$200 per tire for a budget brand, $200–$269 for a mid-range tire like the Cooper Discoverer AT3 LT, and $269–$377 for a premium tire like the BFGoodrich All-Terrain T/A KO3. A set of four therefore starts at about $608. Add roughly $15 to $45 per tire for mounting and balancing.
What vehicles use LT275/70R18 tires?
LT275/70R18 is original equipment on Ford F-250 (2017-2024, XLT/Lariat), Ford F-350 SRW (2017-2024), Ram 2500 (2010-2024, Tradesman/Big Horn), Ram 3500 SRW (2010-2024), Chevrolet Silverado 2500HD (2020-2024, WT/LT) and GMC Sierra 2500HD (2020-2024, SLE), 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 LT275/70R18 tire?
For most drivers our mid-range pick, the Cooper Discoverer AT3 LT, 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 BFGoodrich All-Terrain T/A KO3 is worth the extra. On a tight budget the Ironman All Country A/T is a sound choice.
Can I replace just one or two LT275/70R18 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.