193Best 255/45 R17 tires
14 rated tires available in this size, scored on dry, wet, snow, comfort and wear. Top overall right now is the Toyo Extensa HP II at 93/100.
26″
overall diameter
10″
section width
17″
rim diameter
774.6
revs per mile
Best 255/45 R17 summer tires
9193
289
384
484
576
967Best 255/45 R17 all-season tires
3
188
286
384Best 255/45 R17 winter tires
1
179More top-rated 255/45 R17 tires
1
190Conversion
255/45 R17 in inches
| Overall diameter | 26″ |
| Section width | 10″ |
| Rim diameter | 17″ |
| Sidewall height | 115 mm |
| Circumference | 81.8″ |
| Revolutions per mile | 774.6 |
The closest flotation size is 31x10.50R17 — 19.1% taller and 4.6% wider. Compare them in the calculator.
Wheels
What rims fit 255/45 R17 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
7″
Ideal
8″
Maximum
9″
Rim diameter is fixed at 17″ — only the width varies. Estimated from the 10″ section width (70–90% rule).
Fitted from the factory on rims: 17x8, 17x8.5, 17x9, 17x9.5.
Popular comparisons
Sizes often compared with 255/45 R17
Close alternatives — each opens in the tire size calculator.
Sidewall
255/45 R17 — what does it mean?
| Parameter | Meaning |
|---|---|
| 255 | The first number is the section width — 255 mm, or about 10 inches across the widest part of the tire. |
| 45 | The second number is the aspect ratio: sidewall height as a percentage of width. At 45%, the sidewall is about 115 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. |