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Michelin Pilot Sport All Season 4+
Upgrade to the Michelin Pilot Sport All Season 4 345/25R21 107Y XL BSW, 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 345/25R21 Pilot Sport All Season 4 is a popular responsive fitment for select BMW X3 M40i, Audi SQ5, Mercedes-AMG GLC, Porsche Macan, Genesis GV70, Tesla Model Y models, plus similar performance vehicles using 21-inch wheels.
Why choose the Michelin Pilot Sport All Season 4 in 345/25R21?
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Built for performance SUVs, EV crossovers, and luxury sport utility vehicles: The 107Y XL rating adds extra load capacity for heavier trims, performance packages, EVs, cargo, passengers, and staggered setups.
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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.
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Dynamic Response Technology: Michelin engineers the tire to distribute forces and temperatures evenly, supporting responsive handling and longer wear life.
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Asymmetric performance tread: A performance-focused tread pattern with strong outer-shoulder support helps deliver lateral grip, steering precision, and planted cornering.
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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 345/25R21 Michelin Pilot Sport All Season 4
This tire size is commonly used on select trims or staggered fitments of the BMW X3 M40i, Audi SQ5, Mercedes-AMG GLC, Porsche Macan, Genesis GV70, and Tesla Model Y. 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
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345/25R21: This size is designed for 21-inch wheels and helps shoppers match an original equipment, replacement, or staggered performance fitment.
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107Y XL: The service description and load range identify the tire's load capacity and speed rating for compatible performance vehicles.
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BSW: This version uses black sidewall styling for the finished look on the vehicle.
| SECTION WIDTH Measures the width of the tire from sidewall to sidewall, which is mounted on a wheel and inflated. | 345 |
| ASPECT RATIO Determines the sidewall height of the tire, based on the width. | 25 |
| 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. | 27.8" |
| RIM WIDTH RANGE The approved range of rim widths this tire can be safely mounted on. | 12.0" - 13.0" |
| WEIGHT The weight of the tire measured in pounds (weight of tire only). | 39 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. | 104 |
| 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 |
| 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. | 30000 |
| VPN Vendor Product Number | 34703 |
| GTIN Global Trade Item Number | 086699347039 |