189Best 245/40 R17 tires
87 rated tires available in this size, scored on dry, wet, snow, comfort and wear. Top overall right now is the Goodyear Eagle Sport All-Season at 89/100.
24.7″
overall diameter
9.6″
section width
17″
rim diameter
816
revs per mile
Best 245/40 R17 summer tires
52189
286
384
489
583
682
782
882
983
1082
1189
128140 more rated tires in this size are listed on their brand pages.
More top-rated 245/40 R17 tires
19
188
290
483
584
683
783
893
985
1080
1188
12797 more rated tires in this size are listed on their brand pages.
Best 245/40 R17 all-season tires
16
189
288
386
486
584
682
780
878
975
1075
1170
12584 more rated tires in this size are listed on their brand pages.
Conversion
245/40 R17 in inches
| Overall diameter | 24.7″ |
| Section width | 9.6″ |
| Rim diameter | 17″ |
| Sidewall height | 98 mm |
| Circumference | 77.6″ |
| Revolutions per mile | 816 |
The closest flotation size is 31x10.50R17 — 25.4% taller and 8.9% wider. Compare them in the calculator.
Wheels
What rims fit 245/40 R17 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
7″
Ideal
7.5″
Maximum
8.5″
Rim diameter is fixed at 17″ — only the width varies. Estimated from the 9.6″ section width (70–90% rule).
Fitted from the factory on rims: 17x7, 17x8, 17x8.3, 17x8.5, 17x9.
Popular comparisons
Sizes often compared with 245/40 R17
Close alternatives — each opens in the tire size calculator.
Sidewall
245/40 R17 — what does it mean?
| Parameter | Meaning |
|---|---|
| 245 | The first number is the section width — 245 mm, or about 9.6 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 98 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. |