189Best 285/40 R17 tires
4 rated tires available in this size, scored on dry, wet, snow, comfort and wear. Top overall right now is the Continental Extreme Contact Sport 02 at 90/100.
26″
overall diameter
11.2″
section width
17″
rim diameter
776.4
revs per mile
Best 285/40 R17 summer tires
3189
284
378More top-rated 285/40 R17 tires
1
190Conversion
285/40 R17 in inches
| Overall diameter | 26″ |
| Section width | 11.2″ |
| Rim diameter | 17″ |
| Sidewall height | 114 mm |
| Circumference | 81.6″ |
| Revolutions per mile | 776.4 |
The closest flotation size is 31x10.50R17 — 19.3% taller and 6.4% narrower. Compare them in the calculator.
Wheels
What rims fit 285/40 R17 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 17″ — only the width varies. Estimated from the 11.2″ section width (70–90% rule).
Fitted from the factory on rims: 17x9.5, 17x10, 17x11.
Popular comparisons
Sizes often compared with 285/40 R17
Close alternatives — each opens in the tire size calculator.
Sidewall
285/40 R17 — 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. |
| R17 | R means radial construction, which nearly all modern tires use. The number is the rim diameter in inches — this tire fits a 17-inch wheel. |