Cooper Cobra Instinct 275/40ZR20XL 106Y - 160130025

Looking for a 275/40R20 all season tire? The Cooper Cobra Instinct is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.

What 275/40R20 means

In the size 275/40R20, 275 is the section width in millimeters (10.83 in), 40 is the aspect ratio — the sidewall stands 40% as tall as the tire is wide, or 110.0 mm (4.33 in) — R denotes radial construction, and 20 is the wheel diameter in inches. That works out to an overall diameter of about 28.66 inches, turning roughly 704 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 26.7 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 106 — a maximum load of 2,094 lbs per tire. The speed symbol Y corresponds to a maximum sustained speed of 186 mph.

Load Range E corresponds to a 10-ply rating.

Specifications

Frequently asked questions

What kind of tire is the Cooper Cobra Instinct?

The Cooper Cobra Instinct in 275/40R20 is a all season tire.

What are the treadwear and warranty ratings on the Cooper Cobra Instinct?

This tire carries a treadwear grade of 500, traction grade AA, temperature grade A under UTQG. The manufacturer's warranty is 45K.

What does 106Y mean on the Cooper Cobra Instinct?

106Y breaks down as load index 106 — rated for 2,094 lbs per tire — with a Y speed rating, good for a maximum sustained 186 mph.

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