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Michelin
Latitude Sport
255/55R18 XL
$261.74/tire
$348.99
Set of 4: $1046.96
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Specifications
| Size | 255/55R18 XL Latitude Sport |
|---|---|
| Width | 255 mm |
| Aspect ratio | 55 |
| Rim diameter | R18 |
| Load index | 109 |
| Speed rating | Y |
| Load range | XL |
| UTQG | 220 AA A |
|---|---|
| Treadwear warranty | 20,000 miles |
| Tread depth | 10/32" |
| Weight | 32.74 lbs |
| Max pressure | 50 psi |
| Severe snow (3PMSF) | No |
| Run-flat | No |
About the Michelin Latitude Sport
Summer Ultra-High Performance Passenger SUV and Crossover tire. Original Equipment (OE) on High Performance SUVs and Crossovers such as the Audi Q7 and Porsche Cayenne.
Features
* Chosen by some of the world’s best vehicle manufacturers for its performance on SUVs and crossovers, including Porsche and Audi* Incorporates the tread pattern and tread compounds found in the legendary Pilot® Sport PS2™ tire* Michelin FAZ Technology™ to precisely place reinforcing filaments under the tread* 20,000 Mile Manufacturer's Treadwear Limited Warranty (Speed Rating: V/W/Y) ** Mileage Warranty Exceptions* Standard Limited Warranty ((All Michelin® Tires)
Benefits
* For unparalleled dry grip* For a stable feel and crisp, confident handling at high speeds
Understanding the 255/55R18 XL size
In the size code 255/55R18, 255 is the section width in millimetres (about 10"). 55 is the aspect ratio — the sidewall height is 55% of the width, or roughly 140.3 mm. R18 means radial construction on a 18-inch wheel, giving an approximate overall diameter of 29".
The load index 109 means each tire supports up to 2,271 lbs — about 9,084 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.
Tread life and grip ratings
This tire carries a UTQG rating of 220 AA A. The treadwear grade of 220 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 $261.74 per tire, a full set of four costs $1046.96. That is about 38% above the average of the 83 tires we stock in this size, reflecting its position in the range. Backed by a 20,000-mile treadwear warranty, that works out to roughly $52.35 per 1,000 miles across the set.
Frequently asked questions
What does the tire size 255/55R18 mean?
255 is the section width in millimetres, 55 is the aspect ratio (sidewall height as a percentage of width, about 140.3 mm), and R18 indicates radial construction for a 18-inch wheel. Overall diameter is approximately 29 inches.
What are the load and speed ratings of the Michelin Latitude Sport 255/55R18 XL?
Its load index of 109 allows up to 2,271 lbs per tire. Its speed rating of Y is certified to 186 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 Michelin Latitude Sport 255/55R18 XL tires cost?
A single tire is $261.74 and a set of four is $1046.96, covered by a 20,000-mile treadwear warranty.
Does the Latitude Sport come in other sizes?
Yes — we stock 5 additional Latitude Sport sizes besides 255/55R18 XL. Fit only a size approved for your vehicle.
Other sizes of this model
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