Best 265/50 R21 tires
We don't have rated tires listed in this size yet — the conversion, rim fitment and comparisons below still apply.
31.4″
overall diameter
10.4″
section width
21″
rim diameter
641.6
revs per mile
Conversion
265/50 R21 in inches
| Overall diameter | 31.4″ |
| Section width | 10.4″ |
| Rim diameter | 21″ |
| Sidewall height | 133 mm |
| Circumference | 98.7″ |
| Revolutions per mile | 641.6 |
Wheels
What rims fit 265/50 R21 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
7.5″
Ideal
8.5″
Maximum
9.5″
Rim diameter is fixed at 21″ — only the width varies. Estimated from the 10.4″ section width (70–90% rule).
Fitted from the factory on rims: 21x8.5, 21x9.
Sidewall
265/50 R21 — what does it mean?
| Parameter | Meaning |
|---|---|
| 265 | The first number is the section width — 265 mm, or about 10.4 inches across the widest part of the tire. |
| 50 | The second number is the aspect ratio: sidewall height as a percentage of width. At 50%, the sidewall is about 133 mm tall. |
| R21 | R means radial construction, which nearly all modern tires use. The number is the rim diameter in inches — this tire fits a 21-inch wheel. |