Pirelli PIR P-Zero (PZ4) Sport 245/40R20

Looking for a 245/40R20 high performance tire? The Pirelli P-Zero (PZ4) Sport is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.

What 245/40R20 means

In the size 245/40R20, 245 is the section width in millimeters (9.65 in), 40 is the aspect ratio — the sidewall stands 40% as tall as the tire is wide, or 98.0 mm (3.86 in) — R denotes radial construction, and 20 is the wheel diameter in inches. That works out to an overall diameter of about 27.72 inches, turning roughly 728 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 20 inches — when clearance is tight, go by the published figure rather than the nominal size math.

The service description on this tire decodes to a load index of 99 — a maximum load of 1,709 lbs per tire. The speed symbol Y corresponds to a maximum sustained speed of 186 mph.

Specifications

Frequently asked questions

What kind of tire is the Pirelli P-Zero (PZ4) Sport?

The Pirelli P-Zero (PZ4) Sport in 245/40R20 is a high performance tire.

Will 245/40R20 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 245/40R20, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 245/40R20 tire in stock to compare options.

What does 99Y mean on the Pirelli P-Zero (PZ4) Sport?

99Y breaks down as load index 99 — rated for 1,709 lbs per tire — with a Y speed rating, good for a maximum sustained 186 mph.

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Shop all 245/40R20 tires, see every Pirelli P-Zero (PZ4) Sport size, or view all tires at ThreePiece.us.