193Best 245/45 R17 tires
120 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.
25.7″
overall diameter
9.6″
section width
17″
rim diameter
785.3
revs per mile
Best 245/45 R17 summer tires
44193
289
386
484
584
689
782
882
982
1083
1182
128932 more rated tires in this size are listed on their brand pages.
Best 245/45 R17 all-season tires
39
189
289
388
488
586
686
785
884
984
1083
1185
128227 more rated tires in this size are listed on their brand pages.
More top-rated 245/45 R17 tires
25
188
290
388
587
685
783
884
983
1083
1193
128213 more rated tires in this size are listed on their brand pages.
Best 245/45 R17 winter tires
12
284
380
480
579
678
778
880
976
1076
1175
1274Conversion
245/45 R17 in inches
| Overall diameter | 25.7″ |
| Section width | 9.6″ |
| Rim diameter | 17″ |
| Sidewall height | 110 mm |
| Circumference | 80.7″ |
| Revolutions per mile | 785.3 |
The closest flotation size is 31x10.50R17 — 20.7% taller and 8.9% wider. Compare them in the calculator.
Wheels
What rims fit 245/45 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, 17x7.5, 17x8, 17x8.5, 17x9.
Popular comparisons
Sizes often compared with 245/45 R17
Close alternatives — each opens in the tire size calculator.
Sidewall
245/45 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. |
| 45 | The second number is the aspect ratio: sidewall height as a percentage of width. At 45%, the sidewall is about 110 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. |