Rim Width
Rim width is the inner width of a wheel where the tyre beads sit.
What is Rim Width?
It is given in inches. Each tyre size has approved rim widths. It affects tyre shape. For example, in a wheel marked 7.5Jx17, 7.5 is the rim width in inches and 17 the diameter. Tyre manufacturers publish a range of approved rim widths for each tyre size. A tyre on a rim that is too narrow bulges and feels vague; on a rim that is too wide it stretches and exposes the rim edge.
How it works
The rim supports the tyre beads.
Why it matters for your car
Wrong widths affect handling. Check approval documents.
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