Best 285/40 R15 tires
We don't have rated tires listed in this size yet — the conversion, rim fitment and comparisons below still apply.
24″
overall diameter
11.2″
section width
15″
rim diameter
841.2
revs per mile
Conversion
285/40 R15 in inches
| Overall diameter | 24″ |
| Section width | 11.2″ |
| Rim diameter | 15″ |
| Sidewall height | 114 mm |
| Circumference | 75.3″ |
| Revolutions per mile | 841.2 |
The closest flotation size is 26x12.00R15 — 8.4% taller and 6.9% wider. Compare them in the calculator.
Wheels
What rims fit 285/40 R15 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
8″
Ideal
9″
Maximum
10″
Rim diameter is fixed at 15″ — only the width varies. Estimated from the 11.2″ section width (70–90% rule).
Fitted from the factory on rims: 15x10.
Sidewall
285/40 R15 — what does it mean?
| Parameter | Meaning |
|---|---|
| 285 | The first number is the section width — 285 mm, or about 11.2 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 114 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. |