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Rim diameter guide

# Rim diameter guide

## How do you match tire size to rim diameter?

The last number in a tire size (R17 = 17 inches) must match the rim diameter exactly. The section width also affects which rim width is recommended — a wider tire needs a wider rim for correct bead seating.

- [Rim diameter 14"](https://tirefitlab.com/learn/rim/14in/)
- [Rim diameter 15"](https://tirefitlab.com/learn/rim/15in/)
- [Rim diameter 16"](https://tirefitlab.com/learn/rim/16in/)
- [Rim diameter 17"](https://tirefitlab.com/learn/rim/17in/)
- [Rim diameter 18"](https://tirefitlab.com/learn/rim/18in/)
- [Rim diameter 19"](https://tirefitlab.com/learn/rim/19in/)
- [Rim diameter 20"](https://tirefitlab.com/learn/rim/20in/)
- [Rim diameter 21"](https://tirefitlab.com/learn/rim/21in/)
- [Rim diameter 22"](https://tirefitlab.com/learn/rim/22in/)

Seasonal check

## Planning a long summer drive?

Use the budget and running-cost tools before a trip, especially if the current tires are worn or the replacement size changes diameter.

[Estimate tire budget](https://tirefitlab.com/tire-budget-calculator/)

## More in this topic: Wheel fitment depth

Rim, offset, spacer and bolt-pattern guides for physical fitment checks.

- [**Bolt pattern guide** Find which bolt pattern your car uses and which wheels are compatible. PCD tables for 4x100, 5x112, 5x114.3 and more.](https://tirefitlab.com/learn/bolt-pattern/)
- [**Rim types and materials guide** Rim types explained: steel stamped, cast aluminium alloy, flow-formed alloy, forged alloy, carbon fibre. Weight comparison, heat dissipation, repair cost, corrosion resistance, and which type suits which driving application.](https://tirefitlab.com/learn/rim-types/)
- [**Rim width and tire fitment guide** Use an editorial rim-width screening chart, then verify the approved range for the exact tire product, vehicle clearance and wheel specification.](https://tirefitlab.com/learn/rim-width-tyre-fitment/)
- [**Wheel offset (ET) guide** What is wheel offset (ET)? Positive, negative and zero offset explained, with how to measure backspacing and choose the right ET for your vehicle.](https://tirefitlab.com/learn/wheel-offset/)

### Useful tools

[Wheel offset (ET) decoder](https://tirefitlab.com/wheel-offset-calculator/)[Staggered tire setup calculator](https://tirefitlab.com/staggered-tire-calculator/)

### Technical check

2026-06-28

### Content updated

2026-06-21

What changed

- Checked generated routes, metadata, sitemap inclusion and localized page rendering.
[Methodology](https://tirefitlab.com/methodology/)