Cobra Instinct

About the Cooper Cobra Instinct

All-Season Ultra High Performance Passenger Car tire.

Features

* Sweeping tread grooves* Stronger, lightweight construction* Rim protector guards* M+S Rated* 45,000 Mile Limited Treadwear Warranty

Benefits

* Promote water evacuation in wet conditions, enabling improved wet handling* For enhanced responsiveness* Protect wheels from damage

Understanding the 255/35ZR18 XL size

In the size code 255/35R18, 255 is the section width in millimetres (about 10"). 35 is the aspect ratio — the sidewall height is 35% of the width, or roughly 89.3 mm. R18 means radial construction on a 18-inch wheel, giving an approximate overall diameter of 25".

The load index 94 means each tire supports up to 1,477 lbs — about 5,908 lbs across a full set of four. The speed symbol Y certifies the tire to 186 mph under its rated load. Always match or exceed the load index and speed rating listed on your vehicle's door-jamb placard.

What the Cooper Cobra Instinct is built for

The Cooper Cobra Instinct is an all-season tire, balancing dry grip, wet traction and tread life across spring, summer and autumn conditions. It carries an M+S (mud and snow) marking for light winter service. Fitment category: Passenger Car, Performance, UHP.

Tread life and grip ratings

This tire carries a UTQG rating of 500 AA A. The treadwear grade of 500 is a relative durability score — a grade of 200 is expected to last roughly twice as long as a grade of 100 under the same controlled test. Traction grade AA measures straight-line wet stopping grip (AA is highest, then A, B and C). Temperature grade A reflects heat resistance at sustained speed (A is highest).

Price and value

At $164.99 per tire, a full set of four costs $659.96. That is about 11% below the average price of the 70 tires we stock in this size. Backed by a 45,000-mile treadwear warranty, that works out to roughly $14.67 per 1,000 miles across the set.