275/45R21 tires
Prices, best picks and current deals for 275/45R21, a SUVs size fitted to Ford Explorer ST, Jeep Grand Cherokee, Lincoln Aviator and more.
Yes, this fits your Chevrolet Blazer EV. 275/45R21 is the original size on the 2024 Chevrolet Blazer EV.
The sticker inside the driver's door is still the final word, because trim and wheel package can change the size. Back to every Chevrolet Blazer EV size.
What 275/45R21 tires cost
Kumho Crugen HP71
Lowest price that still brakes and wears acceptably. Fine for a second car or low annual mileage.
Continental CrossContact LX25
The value sweet spot: long mileage warranty, solid wet grip, sane price.
Michelin Primacy Tour A/S
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 $1,316 to $1,644, and a brand rebate can take another $50 to $110 off, see this month's deals.
Cheapest 275/45R21 right now
Atlas Force 275/45R21 110W UHP Passenger Tires
$143.96per tire $575.84 for a set of four
101 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 275/45R21 tire in stock at SimpleTire
About the 275/45R21 size
Explorer ST and Grand Cherokee Summit size, V/W with 110 XL load. Grand-touring SUV all-seasons; premium-priced.
The numbers mean: 275 mm section width, sidewall height 45 % of that width, and a 21-inch rim. Overall diameter works out to about 30.7 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 275/45R21
- Ford Explorer ST (2020-2024)
- Jeep Grand Cherokee (2022-2024, Summit Reserve 21 in)
- Lincoln Aviator (2020-2024, Black Label 21 in)
- Jeep Grand Cherokee L (2021-2024, Summit 21 in)
- Chevrolet Blazer EV (2024, RS 21 in)
Confirm on the door-jamb sticker before ordering. Optional wheel packages often change the size within the same model.
Which type of 275/45R21 tire?
All-Season Tires
Drivers in the South, West Coast and mild parts of the Midwest who want one set of tires that lasts a long time and is quiet.
All-Terrain Tires
Pickup, Jeep and SUV owners who tow, drive gravel or dirt roads, or need real traction in snow and mud.
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 275/45R21 tires cost?
Expect $144–$329 per tire for a budget brand, $329–$411 for a mid-range tire like the Continental CrossContact LX25, and $411–$542 for a premium tire like the Michelin Primacy Tour A/S. A set of four therefore starts at about $576. Add roughly $15 to $45 per tire for mounting and balancing.
What vehicles use 275/45R21 tires?
275/45R21 is original equipment on Ford Explorer ST (2020-2024), Jeep Grand Cherokee (2022-2024, Summit Reserve 21 in), Lincoln Aviator (2020-2024, Black Label 21 in), Jeep Grand Cherokee L (2021-2024, Summit 21 in) and Chevrolet Blazer EV (2024, RS 21 in), 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 275/45R21 tire?
For most drivers our mid-range pick, the Continental CrossContact LX25, 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 Michelin Primacy Tour A/S is worth the extra. On a tight budget the Kumho Crugen HP71 is a sound choice.
Can I replace just one or two 275/45R21 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.