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275/45R21Tires

496 prices · 23 brands · 33 retailers · Updated 4 days ago

Ford ExplorerJeep Grand CherokeeMazda CX-90
Cheapest Price
$129.13
at Arizona Wholesale Tire (Phoenix, AZ) (excl. installation)
Prices updated: November 10, 2026

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On the sidewall: 205 / 55 R 16

What Does 275/45R21 Mean?

275
Width
millimetres
/
45
Profile
% of width
R
21
Rim
inches

A 275mm wide tire with a sidewall height equal to 45% of the width (123.8mm), fitting a 21-inch rim, a common passenger tire size in the US market.

Vehicles that use 275/45R21

Factory and common aftermarket fitments for this size. Open a model page for year ranges, alternate sizes, and current prices.

FAQ: 275/45R21 Tires

Where can I buy 275/45R21 tires online in the USA?+

The cheapest 275/45R21 tires we track start at $129.13 from Arizona Wholesale Tire (Phoenix, AZ). Tire Rack, SimpleTire, Priority Tire, and other national retailers ship nationwide; use the table above to compare.

How much does a 275/45R21 tire cost in the USA?+

275/45R21 tires typically range from about $129.13 for value brands up to $284.09 or more for premium performance tires. Installation is usually $15–$25 per tire extra.

Is 275/45R21 the right tire for my car?+

Check your door-jamb sticker or owner's manual. Many vehicles that use 275/45R21 also have approved alternative sizes; see our vehicle fitment pages for common models.

How much does tire installation cost for 275/45R21?+

Most US tire shops charge $15–$25 per tire for mount and balance. Wheel alignment is often $75–$150 extra. Retailers like Tire Rack let you ship to a local installer at checkout.

Is 275/45R21 the same as 275/45R21?+

Yes, same size. Both describe a 275mm wide tire with a 45% sidewall on a 21-inch rim.

Related Tire Sizes

Looking for a specific brand? Lionhart, Lexani, Ironman, Arroyo. City hubs: Houston, Los Angeles, Chicago, New York. Seasons: all-season, winter.