Arroyo Tamarock AT 255/75R17

Looking for a 255/75R17 all terrain tire? The Arroyo Tamarock AT is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.

What 255/75R17 means

In the size 255/75R17, 255 is the section width in millimeters (10.04 in), 75 is the aspect ratio — the sidewall stands 75% as tall as the tire is wide, or 191.2 mm (7.53 in) — R denotes radial construction, and 17 is the wheel diameter in inches. That works out to an overall diameter of about 32.06 inches, turning roughly 629 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 17 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 115 — a maximum load of 2,679 lbs per tire. The speed symbol T corresponds to a maximum sustained speed of 118 mph.

Specifications

Frequently asked questions

What kind of tire is the Arroyo Tamarock AT?

The Arroyo Tamarock AT in 255/75R17 is a all terrain tire.

What are the treadwear and warranty ratings on the Arroyo Tamarock AT?

This tire carries a treadwear grade of 500, traction grade A, temperature grade A under UTQG.

What does 115T mean on the Arroyo Tamarock AT?

115T breaks down as load index 115 — rated for 2,679 lbs per tire — with a T speed rating, good for a maximum sustained 118 mph.

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