Continental ExtremeContact DWS06 275/45R21XL 110Y - 15578610000

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What 275/45R21 means

In the size 275/45R21, 275 is the section width in millimeters (10.83 in), 45 is the aspect ratio — the sidewall stands 45% as tall as the tire is wide, or 123.8 mm (4.87 in) — R denotes radial construction, and 21 is the wheel diameter in inches. That works out to an overall diameter of about 30.74 inches, turning roughly 656 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 service description on this tire decodes to a load index of 110 — a maximum load of 2,337 lbs per tire. The speed symbol Y corresponds to a maximum sustained speed of 186 mph.

Specifications

Frequently asked questions

What are the treadwear and warranty ratings on the Continental ExtremeContact DWS06?

This tire carries a treadwear grade of 560, traction grade A, temperature grade A under UTQG. The manufacturer's warranty is 50K.

What does 110Y mean on the Continental ExtremeContact DWS06?

110Y breaks down as load index 110 — rated for 2,337 lbs per tire — with a Y speed rating, good for a maximum sustained 186 mph.

What kind of tire is the Continental ExtremeContact DWS06?

The Continental ExtremeContact DWS06 in 275/45R21 is a all season tire.

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