Pilot Sport S 5

About the Michelin Pilot Sport S 5

Summer Ultra High Performance Passenger Car tire for Road and Track.

Features

* Dynamic response technology* Dual sport tread design and bi-compound technology* Tailor-made design* 30,000 Mile Treadwear Limited Warranty

Benefits

* For razor-sharp handling* For exceptional grip on both wet and dry roads* For the most demanding sports car manufacturers

Understanding the 315/30ZR21 XL size

In the size code 315/30R21, 315 is the section width in millimetres (about 12.4"). 30 is the aspect ratio — the sidewall height is 30% of the width, or roughly 94.5 mm. R21 means radial construction on a 21-inch wheel, giving an approximate overall diameter of 28.4".

The load index 105 means each tire supports up to 2,039 lbs — about 8,156 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 300 AA A. The treadwear grade of 300 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 $471.74 per tire, a full set of four costs $1886.96. That sits close to the average for the 26 tires we stock in this size. Backed by a 30,000-mile treadwear warranty, that works out to roughly $62.90 per 1,000 miles across the set.