General Altimax Arctic X 245/45R20XL 103T - 15581500000

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What 245/45R20 means

In the size 245/45R20, 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 20 is the wheel diameter in inches. That works out to an overall diameter of about 28.68 inches, turning roughly 703 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 103 — a maximum load of 1,929 lbs per tire. The speed symbol T corresponds to a maximum sustained speed of 118 mph.

Load Range E corresponds to a 10-ply rating.

Specifications

Frequently asked questions

Will 245/45R20 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 245/45R20, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 245/45R20 tire in stock to compare options.

What does 103T mean on the General Altimax Arctic X?

103T breaks down as load index 103 — rated for 1,929 lbs per tire — with a T speed rating, good for a maximum sustained 118 mph.

What kind of tire is the General Altimax Arctic X?

The General Altimax Arctic X in 245/45R20 is a winter tire.

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