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Michelin Pilot Sport 4S
Shop the Michelin Pilot Sport 4S 255/40R20 101Y XL BSW MB, a max-performance summer tire built for drivers who want precise steering, exceptional dry grip, confident wet braking, and road-to-occasional-track capability. This 255/40R20 Pilot Sport 4S is a popular fitment for select Mercedes-Benz S-Class, Mercedes-AMG C-Class, Mercedes-AMG E-Class, Mercedes-AMG GT, Mercedes-AMG GLC, Mercedes-AMG GLE models, plus similar sports cars, performance sedans, premium EVs, and high-output SUVs using 20-inch wheels.
Why choose the Michelin Pilot Sport 4S in 255/40R20?
Built for sport sedans, grand touring cars, premium EVs, and performance crossovers: The 101Y XL service description adds extra load capacity for performance trims, larger wheels, staggered packages, passengers, and high-speed driving.
Road and occasional track performance: Michelin positions the Pilot Sport 4S for approximately 80% road and 20% track use, making it a strong match for spirited street driving and occasional performance events.
Dynamic Response Technology: The tire is engineered for ultra-precise steering response, strong cornering power, and connected handling at high speed.
Multi-Compound Construction: Michelin uses a performance-focused tread design to help deliver dry grip, wet braking, and consistent control where drivers need it most.
Premium performance pedigree: The Pilot Sport 4S is derived from the Pilot Super Sport and is acclaimed by performance manufacturers such as Mercedes-AMG, Ferrari, and Porsche.
Popular vehicle fitments for 255/40R20 Michelin Pilot Sport 4S
This tire size is commonly used on select trims or staggered applications of the Mercedes-Benz S-Class, Mercedes-AMG C-Class, Mercedes-AMG E-Class, Mercedes-AMG GT, Mercedes-AMG GLC, and Mercedes-AMG GLE. It is also a strong option for comparable performance vehicles that use the same tire size, load rating, speed rating, wheel diameter, and any applicable OE marking.
Size and rating details
255/40R20: This size is designed for 20-inch wheels and is a practical choice for sport sedan, grand touring, EV, and performance crossover fitments that need summer handling with daily usability.
101Y XL: The service description and load range identify the tire's load capacity and speed capability for the intended performance application.
BSW: This version uses black sidewall styling for a clean performance look.
Speed capability: This size carries Y-rated speed capability for high-performance summer driving.
MB marking: This SKU includes a Mercedes-Benz marking, useful when matching a factory-style fitment or replacing tires on a vehicle originally equipped 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 / 275 |
| ASPECT RATIO Determines the sidewall height of the tire, based on the width. | 40 / 40 |
| RIM DIAMETER Measures the rim size from top to bottom (in inches). | 20" / 20" |
| OVERALL DIAMETER Measures the tire height from top to bottom when mounted on a wheel and inflated. | 28" / 28.7" |
| RIM WIDTH RANGE The approved range of rim widths this tire can be safely mounted on. | 8.5" - 10.0" / 9.0" - 11.0" |
| WEIGHT The weight of the tire measured in pounds (weight of tire only). | 26.46 LBS / 29.3 LBS |
| TREAD DEPTH Measured in /32 of an inch to determine the height of the tread block from top to bottom. | 9/32" / 9/32" |
| LOAD INDEX Determines the weight a tire can carry at maximum air pressure. See load Index chart. | 101 / 106 |
| LOAD RANGE Determines the ply rating of the tire. Should be replaced with the same or higher rating. | XL / 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 / 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 186 mph / Up to 186 mph |
| SIDEWALL DESC. The sidewall designation to describe the lettering on the sidewall. | Black Side Wall / Black Side Wall |
| WARRANTY Estimates the life expectancy of the tire, set by the tire manufacturer. | 30000 / 30000 |
| VPN Vendor Product Number | 20409 / 09725 |
| GTIN Global Trade Item Number | 086699204097 / 086699097255 |
Customer Reviews
amazing cornering and braking.