Edge Sport
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Specifications
| Size | 225/50R18 Edge Sport |
|---|---|
| Width | 255 mm |
| Aspect ratio | 50 |
| Rim diameter | R18 |
| Load index | 95 |
| Speed rating | W |
| Load range | SL |
| Season | All-Season |
|---|---|
| UTQG | 500 AA A |
| Treadwear warranty | 45,000 miles |
| Tread depth | 10/32" |
| Weight | 24.67 lbs |
| Max pressure | 51 psi |
| Severe snow (3PMSF) | No |
| Run-flat | No |
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 225/50R18 size
In the size code 255/50R18, 255 is the section width in millimetres (about 10"). 50 is the aspect ratio — the sidewall height is 50% of the width, or roughly 127.5 mm. R18 means radial construction on a 18-inch wheel, giving an approximate overall diameter of 28".
The load index 95 means each tire supports up to 1,521 lbs — about 6,084 lbs across a full set of four. The speed symbol W certifies the tire to 168 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, 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 $119.99 per tire, a full set of four costs $479.96. That is about 23% below the average price of the 2 tires we stock in this size. Backed by a 45,000-mile treadwear warranty, that works out to roughly $10.67 per 1,000 miles across the set.
Frequently asked questions
What does the tire size 255/50R18 mean?
255 is the section width in millimetres, 50 is the aspect ratio (sidewall height as a percentage of width, about 127.5 mm), and R18 indicates radial construction for a 18-inch wheel. Overall diameter is approximately 28 inches.
What are the load and speed ratings of the Kelly Edge Sport 225/50R18?
Its load index of 95 allows up to 1,521 lbs per tire. Its speed rating of W is certified to 168 mph. Check your door-jamb placard and do not fit a tire rated below the vehicle's requirement.
How much does a set of 4 Kelly Edge Sport 225/50R18 tires cost?
A single tire is $119.99 and a set of four is $479.96, covered by a 45,000-mile treadwear warranty.
Does the Edge Sport come in other sizes?
Yes — we stock 52 additional Edge Sport sizes besides 225/50R18. Fit only a size approved for your vehicle.