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275/40R18 Tires

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Find it on your tire sidewall, e.g. 215/60R16

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Size 275/40R18 ✕Clear all

How to read 275/40R18

The size 275/40R18 gives three measurements: tread width 275 mm, sidewall height 110 mm (40% of the width), and rim size 18 in. Overall diameter is 677 mm (about 26.7 in). One full turn covers 2.13 m, or 470 turns per km.

Width275 mm
Sidewall110 mm
Rim18 in
Overall diameter677 mm

To learn what each number means, read How to read a tire size

Cars with 275/40R18 as the factory size

  • BMW 5 Series (F10) · 2010–2017 (rear)
  • BMW 5 Series (G30) · 2017–2023 (rear)
  • Mercedes-Benz E-Class (W213) · 2017–2023 (rear)

Based on the factory sizes we see most often. Different trims of the same model may use different sizes. Confirm with the numbers on your current tire's sidewall.

Other 18-inch sizes in stock

Other 18-inch tire sizes in stock now. Tap a size to see prices and models.

The sizes above are not substitutes. They are just other sizes for the same rim that we have in stock. Switching sizes depends on your car's actual rim width, load index, and wheel-well clearance, which this website can't check. To switch sizes, send a photo of your current tire's sidewall and your car model to LINE @subphaisal and our technicians will help.