Arroyo Tamarock AT 265/70R18

The Arroyo Tamarock AT in 265/70R18 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.

What 265/70R18 means

In the size 265/70R18, 265 is the section width in millimeters (10.43 in), 70 is the aspect ratio — the sidewall stands 70% as tall as the tire is wide, or 185.5 mm (7.30 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 32.61 inches, turning roughly 619 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 18 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 124 — a maximum load of 3,527 lbs per tire. The speed symbol S corresponds to a maximum sustained speed of 112 mph.

Specifications

Frequently asked questions

What does 124S mean on the Arroyo Tamarock AT?

124S breaks down as load index 124 — rated for 3,527 lbs per tire — with an S speed rating, good for a maximum sustained 112 mph.

What kind of tire is the Arroyo Tamarock AT?

The Arroyo Tamarock AT in 265/70R18 is a all terrain tire.

Will 265/70R18 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 265/70R18, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right. See every 265/70R18 tire in stock to compare options.

Keep shopping

Shop all 265/70R18 tires, see every Arroyo Tamarock AT size, explore all terrain tires, or view all tires at ThreePiece.us.