275/65 R18 Tyres

Buy 275/65 R18 Tyres

No tyres available at the moment. Please check again later.

275/65 R18 Explained

275/65 R18 is OEM on select models of Ford and Ram pickups and suits large 4x4s. The first number, 275, is the width of the tyre in mm. The 65 is the aspect ratio. The sidewall height is 65% of the width, so of 275mm, it is 179mm. R18 means a radial tyre which fits an 18-inch rim. The overall diameter is 815mm. The large sidewall helps pickups absorb bumps on uneven roads. We sell 275/65 R18 on Tyres.co.uk, including the XL variants.

Part of the sizeValueWhat it means
Section width 275 The width of the tyre across the tread, measured in millimetres.
Profile (aspect ratio) 65 Sidewall height as a percentage of the width - here, 65% of 275 mm (about 179 mm).
Construction R Radial construction, which is what nearly all road tyres use.
Rim diameter 18 The wheel diameter the tyre fits, measured in inches.
Your tyre dimensions
MeasurementValue
Sidewall height 178.8 mm (7.04 in)
Overall diameter 815 mm (32.1 in)
Circumference 2,559 mm (100.8 in)
Revolutions 629 per mile · 391 per km
Equivalent sizes
SizeOverall diameter
255/75 R17 814 mm · -0.0%
255/70 R18 814 mm · -0.1%
255/65 R19 814 mm · -0.1%
265/70 R17 803 mm · -1.5%
285/65 R17 802 mm · -1.5%
265/65 R18 802 mm · -1.6%

Our Tyre Tools

View All ToolsArrow Right Icon
Tyre Size Calculator
Tyre Size Calculator Image
Tyre Size Comparison
Tyre Size Comparison Image
Tyre Age Calculator
Tyre Age Calculator Image