Pirelli PIR PZero All Season 235/45R18

Looking for a 235/45R18 high-performance tire? The Pirelli PZero All Season is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.

What 235/45R18 means

In the size 235/45R18, 235 is the section width in millimeters (9.25 in), 45 is the aspect ratio — the sidewall stands 45% as tall as the tire is wide, or 105.8 mm (4.16 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 26.33 inches, turning roughly 766 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 18 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 94 — a maximum load of 1,477 lbs per tire. The speed symbol V corresponds to a maximum sustained speed of 149 mph.

Specifications

Frequently asked questions

What kind of tire is the Pirelli PZero All Season?

The Pirelli PZero All Season in 235/45R18 is a high-performance tire.

What are the treadwear and warranty ratings on the Pirelli PZero All Season?

This tire carries a treadwear grade of 500, traction grade A, temperature grade A under UTQG.

What does 94V mean on the Pirelli PZero All Season?

94V breaks down as load index 94 — rated for 1,477 lbs per tire — with a V speed rating, good for a maximum sustained 149 mph.

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