Best 215/40 R15 tires
We don't have rated tires listed in this size yet — the conversion, rim fitment and comparisons below still apply.
21.8″
overall diameter
8.5″
section width
15″
rim diameter
926.3
revs per mile
Conversion
215/40 R15 in inches
| Overall diameter | 21.8″ |
| Section width | 8.5″ |
| Rim diameter | 15″ |
| Sidewall height | 86 mm |
| Circumference | 68.4″ |
| Revolutions per mile | 926.3 |
The closest flotation size is 26x10R15 — 19.4% taller and 18.1% wider. Compare them in the calculator.
Wheels
What rims fit 215/40 R15 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
6″
Ideal
7″
Maximum
7.5″
Rim diameter is fixed at 15″ — only the width varies. Estimated from the 8.5″ section width (70–90% rule).
Fitted from the factory on rims: 15x6.
Sidewall
215/40 R15 — what does it mean?
| Parameter | Meaning |
|---|---|
| 215 | The first number is the section width — 215 mm, or about 8.5 inches across the widest part of the tire. |
| 40 | The second number is the aspect ratio: sidewall height as a percentage of width. At 40%, the sidewall is about 86 mm tall. |
| R15 | R means radial construction, which nearly all modern tires use. The number is the rim diameter in inches — this tire fits a 15-inch wheel. |