Best 125/80 R13 tires
We don't have rated tires listed in this size yet — the conversion, rim fitment and comparisons below still apply.
20.9″
overall diameter
4.9″
section width
13″
rim diameter
966.2
revs per mile
Conversion
125/80 R13 in inches
| Overall diameter | 20.9″ |
| Section width | 4.9″ |
| Rim diameter | 13″ |
| Sidewall height | 100 mm |
| Circumference | 65.6″ |
| Revolutions per mile | 966.2 |
Wheels
What rims fit 125/80 R13 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
3.5″
Ideal
4″
Maximum
4.5″
Rim diameter is fixed at 13″ — only the width varies. Estimated from the 4.9″ section width (70–90% rule).
Fitted from the factory on rims: 13x4.
Sidewall
125/80 R13 — what does it mean?
| Parameter | Meaning |
|---|---|
| 125 | The first number is the section width — 125 mm, or about 4.9 inches across the widest part of the tire. |
| 80 | The second number is the aspect ratio: sidewall height as a percentage of width. At 80%, the sidewall is about 100 mm tall. |
| R13 | R means radial construction, which nearly all modern tires use. The number is the rim diameter in inches — this tire fits a 13-inch wheel. |