Nitto NIT Ridge Grappler LT275/55R20/10

Looking for a 275/55R20 all season tire? The Nitto Ridge Grappler is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.

What 275/55R20 means

In the size 275/55R20, 275 is the section width in millimeters (10.83 in), 55 is the aspect ratio — the sidewall stands 55% as tall as the tire is wide, or 151.2 mm (5.95 in) — R denotes radial construction, and 20 is the wheel diameter in inches. That works out to an overall diameter of about 31.91 inches, turning roughly 632 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 32.13 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 120 — a maximum load of 3,086 lbs per tire, or 117 (2,833 lbs) per tire when mounted as duals. The speed symbol Q corresponds to a maximum sustained speed of 99 mph.

Load Range E corresponds to a 10-ply rating.

Specifications

Frequently asked questions

What kind of tire is the Nitto Ridge Grappler?

The Nitto Ridge Grappler in 275/55R20 is a all season tire.

Will 275/55R20 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 275/55R20, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 275/55R20 tire in stock to compare options.

What does 120/117Q mean on the Nitto Ridge Grappler?

120/117Q breaks down as load index 120 — rated for 3,086 lbs per tire (117, or 2,833 lbs, in dual fitment) — with a Q speed rating, good for a maximum sustained 99 mph.

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