Tyre Size Guide

245/45 R18 Tyre Pressure

The tyre size 245/45 R18 is used on a wide range of vehicles, from hatchbacks to family saloons. While the physical tyre is the same, the recommended pressure varies depending on the weight of the vehicle and the manufacturer's suspension tuning.

Typical pressure for 245/45 R18

Front Axle Range

36–36PSI

Rear Axle Range

34–34PSI

* Data based on 1 vehicle configurations in our database using this tyre size. Always check your own vehicle's sticker.

Vehicles using 245/45 R181 models

Jaguar XF

2016 • Mk2

Front 36 psi / Rear 34 psi

Saloon

Why does 245/45 R18 pressure vary?

Even though many cars share the 245/45 R18 tyre size, the recommended pressure depends on:

Vehicle Weight: A heavier car needs more air pressure to support its mass and maintain the tyre's shape.
Load: Carrying passengers or luggage significantly increases the required pressure on the rear tyres.
Handling: Manufacturers tune tyre pressure to achieve specific steering response and comfort levels.