Advanta ER800 245/45R18

Shop the Advanta ER800 245/45R18 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.

What 245/45R18 means

In the size 245/45R18, 245 is the section width in millimeters (9.65 in), 45 is the aspect ratio — the sidewall stands 45% as tall as the tire is wide, or 110.2 mm (4.34 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 26.68 inches, turning roughly 756 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 100 — a maximum load of 1,764 lbs per tire. The speed symbol H corresponds to a maximum sustained speed of 130 mph.

Specifications

Frequently asked questions

How fast does this tire ship?

Every order at ThreePiece.us ships free, with fast delivery from a nationwide warehouse network. Affirm financing is available at checkout.

What does 100H mean on the Advanta ER800?

100H breaks down as load index 100 — rated for 1,764 lbs per tire — with an H speed rating, good for a maximum sustained 130 mph.

Will 245/45R18 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 245/45R18, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 245/45R18 tire in stock to compare options.

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