275/45R21 tires are in stock right now with 41 options spanning premium, performance, and value brands including Pirelli, Continental, Falken, Toyo, Nokian, Hankook, Lexani, Arroyo, and Ironman. Every order ships free, Affirm financing is available at checkout, and fast delivery comes from a nationwide network. Browse the full range below or jump straight into all tires to compare fitments.
Shop 275/45R21 Tires In Stock
Showing 36 in stock.
What 275/45R21 tires means
The size code breaks down into exact measurements that tell you how the tire fits and behaves. The first number, 275, is the section width in millimeters (about 10.83 inches) measured across the widest part of the tire. The 45 is the aspect ratio, meaning the sidewall height equals 45% of that width — here that works out to roughly 123.8 mm, or 4.87 inches. The R indicates radial construction, and 21 is the wheel diameter in inches these tires mount to.
Put together, a 275/45R21 has an overall diameter of about 30.74 inches and turns roughly 656 revolutions per mile. Those figures matter because overall diameter drives speedometer accuracy and clearance in the wheel well, while the relatively short 4.87-inch sidewall balances responsive steering with a firmer ride than a taller sidewall would give. Matching the exact size keeps your speedometer honest and your fitment clean.
Vehicles & uses
This is a large-diameter, wide fitment that is commonly found on performance SUVs, crossovers, and larger touring vehicles equipped with 21-inch wheels. The combination of width and a lower-profile sidewall is typical of vehicles that prioritize on-road handling and a sporty stance. Always confirm the size, load rating, and speed rating printed on your door placard or existing tires before ordering, since the correct spec varies by vehicle and trim.
Brands & options in 275/45R21 tires
On the premium end, Continental tires and Pirelli tires lead the selection. Continental choices include the CrossContact LX Sport (110Y), the touring-oriented ContiPremiumContact 6 (107V), and the sport-focused ContiSportContact 6 (107Y). Pirelli covers a wide spread from the P Zero (PZ5, 107Y) and P-Zero (PZ4, 107Y) to the all-weather Scorpion WeatherActive.
Performance and touring
The Falken Ziex CT60A A/S (107W) is a solid all-season option, and Toyo tires are represented by the Open Country A50. Nokian and Hankook tires round out this group.
Value
Budget-conscious shoppers can look at the Lexani LX-THIRTY, plus options from Arroyo and Ironman.
How to choose
Season: Summer tires deliver the sharpest dry and wet grip in warm climates, all-season tires balance year-round usability, and winter tires are built for cold, snow, and ice. Pick based on where and when you drive.
Treadwear & UTQG: The UTQG treadwear, traction, and temperature grades let you compare longevity and grip characteristics between models. A higher treadwear number generally suggests longer expected tread life.
Load index & speed rating: The two- or three-digit load index and letter speed rating (such as the 107Y or 110Y stamped on many of these tires) must meet or exceed what your vehicle requires. Never drop below your placard's minimums.
Warranty: Mileage and workmanship coverage vary by model, so review the specific tire's warranty on its product page before you buy.
Frequently Asked Questions
What does 275/45R21 tires mean?
It describes a tire that is 275 mm wide (about 10.83 inches) with a sidewall height 45% of that width (roughly 4.87 inches), built as a radial, and sized to fit a 21-inch wheel. The overall diameter is about 30.74 inches.
How much do 275/45R21 tires cost?
Prices currently range from about $187.28 to $620.00 per tire, depending on brand, model, and performance category.
How many 275/45R21 tires are available?
There are 41 tires in this size in stock across brands including Pirelli, Continental, Falken, Toyo, Nokian, Hankook, Lexani, Arroyo, and Ironman.