Cooper Discoverer Rugged Trek 265/60R18XL 114T - 171069005

Looking for a 265/60R18 all season tire? The Cooper Discoverer Rugged Trek is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.

What 265/60R18 means

In the size 265/60R18, 265 is the section width in millimeters (10.43 in), 60 is the aspect ratio — the sidewall stands 60% as tall as the tire is wide, or 159.0 mm (6.26 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 30.52 inches, turning roughly 661 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 30.75 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 114 — a maximum load of 2,601 lbs per tire. The speed symbol T corresponds to a maximum sustained speed of 118 mph.

Load Range E corresponds to a 10-ply rating.

Specifications

Frequently asked questions

What kind of tire is the Cooper Discoverer Rugged Trek?

The Cooper Discoverer Rugged Trek in 265/60R18 is a all season tire.

What are the treadwear and warranty ratings on the Cooper Discoverer Rugged Trek?

This tire carries a treadwear grade of 600, traction grade A, temperature grade B under UTQG. The manufacturer's warranty is 60K.

What does 114T mean on the Cooper Discoverer Rugged Trek?

114T breaks down as load index 114 — rated for 2,601 lbs per tire — with a T speed rating, good for a maximum sustained 118 mph.

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