General Tire GEN Grabber HD LT275/70R18/10

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What 275/70R18 means

In the size 275/70R18, 275 is the section width in millimeters (10.83 in), 70 is the aspect ratio — the sidewall stands 70% as tall as the tire is wide, or 192.5 mm (7.58 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 33.16 inches, turning roughly 608 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 125 — a maximum load of 3,638 lbs per tire, or 122 (3,307 lbs) per tire when mounted as duals. The speed symbol S corresponds to a maximum sustained speed of 112 mph.

Load Range E corresponds to a 10-ply rating.

Specifications

Frequently asked questions

Will 275/70R18 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 275/70R18, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 275/70R18 tire in stock to compare options.

What does 125/122S mean on the General Tire Grabber HD?

125/122S breaks down as load index 125 — rated for 3,638 lbs per tire (122, or 3,307 lbs, in dual fitment) — with an S speed rating, good for a maximum sustained 112 mph.

What kind of tire is the General Tire Grabber HD?

The General Tire Grabber HD in 275/70R18 is a highway tire.

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