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255/40R18 Tires

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Vehicles that commonly use 255/40R18

Based on factory fitment data. Trims differ, so always confirm the size printed on your tire’s sidewall before ordering.

• Toyota Supra (2020–2027)
• BMW M3 (2001–2027)
• BMW M4 (2015–2027)
• BMW 4 Series (2025–2027)
• Lexus SC (2002–2010)
• Audi A4 (2002–2008)
• Jaguar XK8 (1997–2006)
• Mercedes-Benz SL-Class (1990–2002)

How to read 255/40R18

The first number (255) is the tire width in millimeters. The second (40) is the sidewall height as a percentage of the width, and R18 means a radial tire for a 18-inch wheel.

Need help choosing?

Call or text (571) 402-8698 with a photo of your sidewall and we’ll confirm the size before you buy.

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