Arroyo Eco Pro HT LT265/70R17

The Arroyo Eco Pro HT in 265/70R17 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.

What 265/70R17 means

In the size 265/70R17, 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 17 is the wheel diameter in inches. That works out to an overall diameter of about 31.61 inches, turning roughly 638 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 121 — a maximum load of 3,197 lbs per tire. 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

What does 121S mean on the Arroyo Eco Pro HT?

121S breaks down as load index 121 — rated for 3,197 lbs per tire — with an S speed rating, good for a maximum sustained 112 mph.

What kind of tire is the Arroyo Eco Pro HT?

The Arroyo Eco Pro HT in 265/70R17 is a passenger tire.

What are the treadwear and warranty ratings on the Arroyo Eco Pro HT?

This tire carries a treadwear grade of 600, traction grade A, temperature grade B under UTQG.

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