Pirelli Winter SottoZero Series 3 265/40R21XL 105W - 4538500

The Pirelli Winter SottoZero Series 3 in 265/40R21 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.

What 265/40R21 means

In the size 265/40R21, 265 is the section width in millimeters (10.43 in), 40 is the aspect ratio — the sidewall stands 40% as tall as the tire is wide, or 106.0 mm (4.17 in) — R denotes radial construction, and 21 is the wheel diameter in inches. That works out to an overall diameter of about 29.35 inches, turning roughly 687 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 105 — a maximum load of 2,039 lbs per tire. The speed symbol W corresponds to a maximum sustained speed of 168 mph.

Load Range E corresponds to a 10-ply rating.

Specifications

Frequently asked questions

What does 105W mean on the Pirelli Winter SottoZero Series 3?

105W breaks down as load index 105 — rated for 2,039 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.

What kind of tire is the Pirelli Winter SottoZero Series 3?

The Pirelli Winter SottoZero Series 3 in 265/40R21 is a winter tire.

Will 265/40R21 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 265/40R21, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 265/40R21 tire in stock to compare options.

Keep shopping

Shop all 265/40R21 tires, browse Pirelli tires, see every Pirelli Winter SottoZero Series 3 size, explore winter snow tires, or view all tires at ThreePiece.us.