ACHILLES ATR SPORT 2 275/35R21

The Achilles ATR Sport II in 275/35R21 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.

The Achilles ATR Sport II is a performance-oriented ultra-high-performance tire built for drivers who want responsive grip and confident steering feel from a value-focused summer-style design. Feedback from drivers points to strong dry-surface grip and pleasant steering characteristics, making it a popular pick for those chasing sporty handling without a premium price.

Beyond outright grip, this model is designed to keep road noise in check, with drivers reporting relatively quiet running at highway speeds. It carries an XL (extra load) rating, giving it added carrying capacity for its size, and it earns AA traction and A temperature grades with a 400 treadwear rating for a balance of everyday capability and sporty character. As with most performance-focused tires, some owners note that wet-weather stability at higher speeds is a compromise worth keeping in mind.

Offered here in a 21-inch fitment, the ATR Sport II suits enthusiasts running larger-diameter wheels who want a grip-first tire that still behaves on the daily commute.

Achilles ATR Sport II highlights

• Strong dry grip with responsive, sporty steering feel reported by drivers
• Designed to run relatively quiet at highway speeds
• XL (extra load) construction for added load capacity
• AA traction and A temperature grades
• 400 treadwear rating balancing sport character and everyday use
• Free shipping on every order, with Affirm financing available

What 275/35R21 means

In the size 275/35R21, 275 is the section width in millimeters (10.83 in), 35 is the aspect ratio — the sidewall stands 35% as tall as the tire is wide, or 96.2 mm (3.79 in) — R denotes radial construction, and 21 is the wheel diameter in inches. That works out to an overall diameter of about 28.58 inches, turning roughly 706 revolutions per mile. Overall diameter is what matters for speedometer accuracy and clearance when you change sizes, so compare it — not just the width — against your current tire.

The manufacturer lists the overall diameter of this specific tire as 21 inches — when clearance is tight, go by the published figure rather than the nominal size math.

Specifications

Frequently asked questions

What are the treadwear and warranty ratings on the Achilles ATR Sport II?

This tire carries a treadwear grade of 400, traction grade AA, temperature grade A under UTQG. The manufacturer's warranty is 35K Mileage Warranty.

Will 275/35R21 tires fit my vehicle?

Check the size molded into your current tire's sidewall or the tire placard inside the driver's door jamb — if it reads 275/35R21, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 275/35R21 tire in stock to compare options.

How fast does this tire ship?

Every order at ThreePiece.us ships free, with fast delivery from a nationwide warehouse network. Affirm financing is available at checkout.

Keep shopping

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