Edge Sport

About the Kelly Edge Sport

All-Season Ultra High Performance Passenger Car tire.

Features

* Improved tread compound* Asymmetric tread design* Sweeping circumferential grooves* Contoured edges* 45,000 Mile/75,000 km Limited Treadwear Warranty* Kelly 45 Day Satisfaction Guarantee

Benefits

* Help enable enhanced wet handling and stopping* Helps enable enhanced all-season handling* Help enable improved traction* Help to reduce road noise and enhance tread life

Understanding the 255/40R18 XL size

In the size code 255/40R18, 255 is the section width in millimetres (about 10"). 40 is the aspect ratio — the sidewall height is 40% of the width, or roughly 102 mm. R18 means radial construction on a 18-inch wheel, giving an approximate overall diameter of 26".

The load index 99 means each tire supports up to 1,709 lbs — about 6,836 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 Kelly Edge Sport is built for

The Kelly Edge Sport 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 $136.49 per tire, a full set of four costs $545.96. That is about 30% below the average price of the 71 tires we stock in this size. Backed by a 45,000-mile treadwear warranty, that works out to roughly $12.13 per 1,000 miles across the set.