The 245/40R21 tire size delivers exceptional performance and handling for luxury sedans and premium SUVs. This high-performance tire size is commonly found on vehicles such as the BMW X3, Genesis G90, and Audi S6 Sportback e-tron, where drivers demand superior grip and responsive steering. The 245/40R21 size offers an ideal balance of performance and comfort, with options available in high-performance, ultra-high performance, and summer performance categories to match your driving style and conditions. Whether you prioritize all-season versatility or maximum dry pavement performance, 245/40R21 tires provide the precise handling characteristics these sophisticated vehicles were designed to deliver. With free shipping to your door, as part of a wheel and tire package, or to one of over 10,000 Recommended Installer locations, you can find the perfect set of 245/40R21 tires right here.
With over 10,000 approved and trusted installers across America, you’re in excellent hands.
World-Class Customer Care
Need help? You’ll reach a U.S.-based team whose expert guidance helps drive Tire Rack’s Net Promoter Score of 86.5*, well above the 80+ benchmark for “world‑class.”
*May 2026
Revolutionizing Tire Buying Since 1979
From our first location to launching nationwide mail order to creating TireRack.com, we believe in bringing you The Way Tire Buying Should Be.™
Independent Tire Testing Program
We test tires on the road and on our specially designed track to simulate real-world dry and wet conditions. Independent, unbiased results to help inform your choice.
Real Drivers. Real Miles. Real Talk.
Tire Rack verified customer reviews come backed by over 3.4 billion real-world miles.
Need help choosing the right products for your vehicle? Our US-based team of highly trained experts has the knowledge and passion to help. Just pick up the phone and give us a ring. Or let's chat via email. We love solving problems and lending a hand (or an ear).
Orders
