Best 345/40R17 tires
1 rated tire available in this size, scored on dry, wet, snow, comfort and wear.
TireWheelGuide may earn a commission from purchases made through these links.
Every rated 345/40R17 tire, by season
Ranked by our Relative score, weighed against how many reviews and tests stand behind it.
How scores work
- Relative score
- 0–100. Blends road tests (60%) and owner reviews (40%) category by category, the same way on every TireWheelGuide page. With only one of the two, it uses that one.
- Ranking
- A score backed by only a few reviews or tests is pulled toward the typical score before ranking, so a 95 from a dozen reviews can rank below a 92 from hundreds.
Best 345/40R17 summer tires
1
TireWheelGuide may earn a commission from purchases made through these links.
Nearest sizes with rated tires
Within 3% of the overall diameter, on the same rim first. Check the sizes approved for your vehicle before you switch.
345/40R17 in inches
| Overall diameter | 27.9″ |
| Section width | 13.6″ |
| Rim diameter | 17″ |
| Sidewall height | 138 mm |
| Circumference | 87.5″ |
| Revolutions per mile | 723.7 |
Revolutions per mile: how many times the tire turns in one mile, the count your speedometer is calibrated to.
What rims fit 345/40R17 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
The rim diameter is fixed at 17″; only the width can change. Rims are usually 70–90% as wide as the tire’s 13.6″ section width.
345/40R17 — what does it mean?
| Parameter | Meaning |
|---|---|
| 345 | The first number is the section width — 345 mm, or about 13.6 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 138 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. |