183Best 285/40 R23 tires
11 rated tires available in this size, scored on dry, wet, snow, comfort and wear. Top overall right now is the Pirelli P Zero PZ5 at 85/100.
32″
overall diameter
11.2″
section width
23″
rim diameter
630.7
revs per mile
Best 285/40 R23 summer tires
5183
281
377
476
574More top-rated 285/40 R23 tires
4
185
286
377
488Best 285/40 R23 all-season tires
2
177
Conversion
285/40 R23 in inches
| Overall diameter | 32″ |
| Section width | 11.2″ |
| Rim diameter | 23″ |
| Sidewall height | 114 mm |
| Circumference | 100.5″ |
| Revolutions per mile | 630.7 |
Wheels
What rims fit 285/40 R23 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 23″ — only the width varies. Estimated from the 11.2″ section width (70–90% rule).
Fitted from the factory on rims: 23x9.5, 23x10, 23x11.5.
Popular comparisons
Sizes often compared with 285/40 R23
Close alternatives — each opens in the tire size calculator.
Sidewall
285/40 R23 — 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. |
| R23 | R means radial construction, which nearly all modern tires use. The number is the rim diameter in inches — this tire fits a 23-inch wheel. |