9x18 rims

9x18 rims: a wide size for sporty vehicles

9x18 rims are primarily used on high-performance saloons, coupés, sports cars, estate cars and selected SUVs. The size specification refers to a rim width of 9 inches and a rim diameter of 18 inches. The generous width often allows tyres with a correspondingly wide tread to be fitted, which can give the vehicle a more striking and dynamic appearance.

This rim size is often used on the rear axle, for example on vehicles with mixed tyres, where narrower rims are fitted at the front and wider ones at the rear. Such a combination can emphasise the sporty look and, in high-performance vehicles, support the effective transfer of drive forces. Before purchasing, however, the bolt circle, offset, centre bore, load capacity and permissible tyre size must be checked.

Alloy or steel rims in 9x18

In the 9x18 size, almost exclusively alloy wheels are available. Alloy wheels offer a wide selection of sporty designs, including concave spoke shapes, wide double-spoke designs and delicate multi-spoke wheels. The depth effect of many designs is particularly striking with wide rims.

Finishes range from classic silver through black and anthracite to bronze, gold or high-sheen variants. Special winter-suitable alloy wheels are available for use during the colder months, featuring a coating that protects against moisture and road salt.

Steel rims play virtually no role in the 9x18 size on the standard passenger car aftermarket. The wide and large version is used almost exclusively for sporty aluminium wheels.

Well-known brands and key purchasing criteria

Well-known manufacturers of 9x18 aluminium wheels include BBS, Borbet, Ronal, OZ Racing, AEZ, Dotz, Autec and CMS. The range extends from understated premium wheels to models inspired by motorsport.

When purchasing, the following points should be taken into account: