Best 135/70 R12 tires
We don't have rated tires listed in this size yet — the conversion, rim fitment and comparisons below still apply.
19.4″
overall diameter
5.3″
section width
12″
rim diameter
1037.4
revs per mile
Conversion
135/70 R12 in inches
| Overall diameter | 19.4″ |
| Section width | 5.3″ |
| Rim diameter | 12″ |
| Sidewall height | 95 mm |
| Circumference | 61.1″ |
| Revolutions per mile | 1037.4 |
Wheels
What rims fit 135/70 R12 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
3.5″
Ideal
4.5″
Maximum
5″
Rim diameter is fixed at 12″ — only the width varies. Estimated from the 5.3″ section width (70–90% rule).
Fitted from the factory on rims: 12x4.
Sidewall
135/70 R12 — what does it mean?
| Parameter | Meaning |
|---|---|
| 135 | The first number is the section width — 135 mm, or about 5.3 inches across the widest part of the tire. |
| 70 | The second number is the aspect ratio: sidewall height as a percentage of width. At 70%, the sidewall is about 95 mm tall. |
| R12 | R means radial construction, which nearly all modern tires use. The number is the rim diameter in inches — this tire fits a 12-inch wheel. |