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Michelin Pilot Sport All Season 4
Upgrade to the Michelin Pilot Sport All Season 4 255/40R18 99Y 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 255/40R18 Pilot Sport All Season 4 is a popular responsive fitment for select BMW 3 Series, Audi A4, Mercedes-Benz C-Class, Acura TLX, Lexus IS, Genesis G70 models, plus similar performance vehicles using 18-inch wheels.
Why choose the Michelin Pilot Sport All Season 4 in 255/40R18?
Built for sport sedans, performance coupes, hot hatchbacks, and EV performance trims: The 99Y 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 255/40R18 Michelin Pilot Sport All Season 4
This tire size is commonly used on select trims or staggered fitments of the BMW 3 Series, Audi A4, Mercedes-Benz C-Class, Acura TLX, Lexus IS, and Genesis G70. 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
255/40R18: This size is designed for 18-inch wheels and helps shoppers match an original equipment, replacement, or staggered performance fitment.
99Y 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.
Frequently asked questions
Is the Michelin Pilot Sport All Season 4 255/40R18 good for daily driving?
Yes. It is built for drivers who want performance handling, wet-road grip, and light-snow capability while still using one tire for everyday commuting and weekend driving.
What vehicles use the Michelin Pilot Sport All Season 4 255/40R18?
Popular applications include select BMW 3 Series, Audi A4, Mercedes-Benz C-Class, and Acura TLX models, along with comparable vehicles using the same size, load range, and speed rating.
Does the Michelin Pilot Sport All Season 4 have a mileage warranty?
Yes. Michelin lists mileage warranty coverage up to 45,000 miles for many V-, W-, and Y-speed-rated replacement sizes.
| 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. | 40 |
| RIM DIAMETER Measures the rim size from top to bottom (in inches). | 18" |
| OVERALL DIAMETER Measures the tire height from top to bottom when mounted on a wheel and inflated. | 26.1" |
| RIM WIDTH RANGE The approved range of rim widths this tire can be safely mounted on. | 8.5" - 10.0" |
| WEIGHT The weight of the tire measured in pounds (weight of tire only). | 26.04 LBS |
| TREAD DEPTH Measured in /32 of an inch to determine the height of the tread block from top to bottom. | 10/32" |
| LOAD INDEX Determines the weight a tire can carry at maximum air pressure. See load Index chart. | 99 |
| 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 186 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 | 31394 |
| GTIN Global Trade Item Number | 086699313942 |
Customer Reviews
Fantastic on my 2003 50th Anniversary Edition Corvette Convertible! Holds tight in the corners, grabs and holds for launch and yet still very smooth in Touring mode!
These Michelin's are far superior to my last set of Yokohamas.
Great tires. How can you beat Michlins?
2024 CT4-V Blackwing - Excellent tire and performance all around. I was hoping for better treadlife for a 540 treadwear tire. My car has staggered sizes so rotating is limited. Rears were about gone at the listed mileage and fronts were wearing good but got really noisy. All four were replaced, prorated under warranty. I’ll buy them again but have adjusted my pressures lower (31 F, 29 R) because the centers were wearing way more than the edges, and will rotate more often to extend their life.
Much better than the original run-flat tire!