Pirelli Cinturato Weatheractive 235/45R18XL 98W - 4515800

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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 service description on this tire decodes to a load index of 98 — a maximum load of 1,653 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 are the treadwear and warranty ratings on the Pirelli Cinturato Weatheractive?

This tire carries a treadwear grade of 700, traction grade A, temperature grade A under UTQG. The manufacturer's warranty is 60K.

What does 98W mean on the Pirelli Cinturato Weatheractive?

98W breaks down as load index 98 — rated for 1,653 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.

What kind of tire is the Pirelli Cinturato Weatheractive?

The Pirelli Cinturato Weatheractive in 235/45R18 is a all season tire.

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