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Michelin Pilot Sport All Season 4
Outfit your performance vehicle with the Michelin Pilot Sport All Season 4 255/45R21 106V XL BSW NE, an ultra-high-performance all-season tire built for drivers who want sharp steering, strong wet and dry grip, winter confidence, and daily usability from one performance tire. This 255/45R21 Pilot Sport All Season 4 is a popular responsive fitment for select Mercedes-AMG GLC, Porsche Macan, Genesis GV70, Tesla Model Y, BMW X3 M40i, Audi SQ5 models, plus similar performance vehicles using 21-inch wheels.
Why choose the Michelin Pilot Sport All Season 4 in 255/45R21?
Built for performance SUVs, EV crossovers, and luxury sport utility vehicles: The 106V XL rating adds extra load capacity for heavier trims, performance packages, EVs, cargo, passengers, and staggered setups.
Ultra-high-performance all-season grip: The Pilot Sport All Season 4 is designed for confident performance on wet, dry, and snowy roads without moving to a dedicated summer tire.
Dynamic Response Technology: Michelin engineers the tire to distribute forces and temperatures evenly, supporting responsive handling and longer wear life.
Asymmetric performance tread: A performance-focused tread pattern with strong outer-shoulder support helps deliver lateral grip, steering precision, and planted cornering.
All-season traction details: Full-depth and interlocking sipes, biting edges, and Michelin tread-compound technology help maintain grip in rain, cold conditions, and light snow.
Popular vehicle fitments for 255/45R21 Michelin Pilot Sport All Season 4
This tire size is commonly used on select trims or staggered fitments of the Mercedes-AMG GLC, Porsche Macan, Genesis GV70, Tesla Model Y, BMW X3 M40i, and Audi SQ5. It is also a strong option for similar sports cars, performance sedans, EVs, premium crossovers, and SUVs that use the same tire size, load rating, speed rating, and wheel diameter.
Size and rating details
255/45R21: This size is designed for 21-inch wheels and helps shoppers match an original equipment, replacement, or staggered performance fitment.
106V XL: The service description and load range identify the tire's load capacity and speed rating for compatible performance vehicles.
BSW: This version uses black sidewall styling for the finished look on the vehicle.
Marked fitment: This SKU includes a NE marked fitment, useful when shoppers are matching an existing tire, staggered setup, or original-equipment-style application with the same designation.
| SECTION WIDTH Measures the width of the tire from sidewall to sidewall, which is mounted on a wheel and inflated. | 255 |
| ASPECT RATIO Determines the sidewall height of the tire, based on the width. | 45 |
| RIM DIAMETER Measures the rim size from top to bottom (in inches). | 21" |
| OVERALL DIAMETER Measures the tire height from top to bottom when mounted on a wheel and inflated. | 30" |
| RIM WIDTH RANGE The approved range of rim widths this tire can be safely mounted on. | 8.0" - 9.5" |
| WEIGHT The weight of the tire measured in pounds (weight of tire only). | 31.75 LBS |
| TREAD DEPTH Measured in /32 of an inch to determine the height of the tread block from top to bottom. | 9/32" |
| LOAD INDEX Determines the weight a tire can carry at maximum air pressure. See load Index chart. | 106 |
| LOAD RANGE Determines the ply rating of the tire. Should be replaced with the same or higher rating. | XL |
| MAX PSI The max psi is the highest pressure the tire can hold, but should be inflated to your vehicle specifications not exceeding this amount. | 50 PSI |
| SPEED RATING Designation from laboratory testing to determine the maximum speed the tire can travel. Maintain the same speed rating or higher for replacement. | Up to 149 mph |
| SIDEWALL DESC. The sidewall designation to describe the lettering on the sidewall. | Black Side Wall |
| WARRANTY Estimates the life expectancy of the tire, set by the tire manufacturer. | 45000 |
| VPN Vendor Product Number | 99394 |
| GTIN Global Trade Item Number | 086699993946 |
Customer Reviews
Great tire! Lot’s of confidence in my Audi RS5!
These tires totally changed my Chevrolet SS for the better. The dealer I bought the car from used put a cheap set of tires on it to replace the OEM tires that were 10 years old. Those tires were very noisy, harsh riding and I doubt they were actually round. It was a night and day difference when I bought the Michelins. Even before I left the parking lot I could feel the difference. Great Tire 10 out of 10.