# 245/60 R18

## What size is 245/60 R18?

245/60 R18 has an overall diameter of about 29.57 in, a section width of 9.65 in and a sidewall height of 5.79 in. It turns roughly 682 times per mile. Below are the exact figures plus in-tolerance plus/minus sizes you can switch to safely.

## Specification

| Specification | |
|---|---|
| Overall diameter | 29.57 in |
| Section width | 9.65 in |
| Sidewall height | 5.79 in |
| Circumference | 92.91 in |
| Revolutions | 424 /km · 682 /mi |

## In-tolerance sizes

| Size | Diameter | Speedo | Verdict |
|---|---|---|---|
| [305/40 R20](https://tirefitlab.com/305-40-r20.md) | +0.1% | +0.1% | ✓ OK |
| [245/65 R17](https://tirefitlab.com/245-65-r17.md) | -0.1% | -0.1% | ✓ OK |
| [245/70 R16](https://tirefitlab.com/245-70-r16.md) | -0.2% | -0.2% | ✓ OK |
| [265/50 R19](https://tirefitlab.com/265-50-r19.md) | -0.5% | -0.5% | ✓ OK |
| [275/45 R20](https://tirefitlab.com/275-45-r20.md) | +0.6% | +0.6% | ✓ OK |
| [265/45 R20](https://tirefitlab.com/265-45-r20.md) | -0.6% | -0.6% | ✓ OK |
| [285/35 R22](https://tirefitlab.com/285-35-r22.md) | +0.9% | +0.9% | ✓ OK |
| [295/40 R20](https://tirefitlab.com/295-40-r20.md) | -1.0% | -1.0% | ✓ OK |
| [235/70 R17](https://tirefitlab.com/235-70-r17.md) | +1.3% | +1.3% | ✓ OK |
| [235/55 R19](https://tirefitlab.com/235-55-r19.md) | -1.3% | -1.3% | ✓ OK |
| [295/35 R21](https://tirefitlab.com/295-35-r21.md) | -1.5% | -1.5% | ✓ OK |
| [235/65 R18](https://tirefitlab.com/235-65-r18.md) | +1.5% | +1.5% | ✓ OK |

---

Methodology: https://tirefitlab.com/methodology/ · Tire size calculator: https://tirefitlab.com/245-60-r18/

> Geometry is computed in canonical millimetres and is deterministic across the site. Always verify physical clearance before fitting.