175/65R15 dimensions
| Measure | Inches | Millimetres |
|---|---|---|
| Overall height | 23.96 in | 608 mm |
| Section width | 6.89 in | 175 mm |
| Sidewall height | 4.48 in | 113.8 mm |
| Wheel diameter | 15 in | 381 mm |
| Circumference | 75.3 in | 1,912 mm |
| Revolutions per mile | 841.9 |
The math
| Step | Math | Result |
|---|---|---|
| Sidewall | 175 × 65% = 113.8 mm ÷ 25.4 | 4.48 in |
| Overall height | 15 + 2 × 4.48 | 23.96 in |
| Width | 175 mm ÷ 25.4 | 6.89 in |
| Circumference | π × 23.96 | 75.3 in |
| Revs per mile | 63,360 ÷ 75.3 | 841.9 |
With a 4.5 in sidewall this is a medium sidewall: a balance of cushion and response. Real tires vary by brand and model, and the loaded radius under the vehicle is a bit smaller than this unloaded figure.
One step either way on a 15 in wheel
Each row changes one thing and shows the height change against 175/65R15, plus what 60 mph on the speedometer would really be if you swapped to that size.
| Change | Size | Height | Height change | 60 mph shows as | Verdict |
|---|---|---|---|---|---|
| Wider | 185/65R15 (compare) | 24.5 in | +2.1% | 61.3 mph | Close match |
| Narrower | 165/65R15 (compare) | 23.4 in | -2.1% | 58.7 mph | Close match |
| Taller sidewall | 175/70R15 (compare) | 24.6 in | +2.9% | 61.7 mph | Close match |
| Shorter sidewall | 175/60R15 (compare) | 23.3 in | -2.9% | 58.3 mph | Close match |
| Wider, shorter sidewall | 185/60R15 (compare) | 23.7 in | -0.9% | 59.5 mph | Close match |
| Narrower, taller sidewall | 165/70R15 (compare) | 24.1 in | +0.6% | 60.3 mph | Close match |
Calculated sizes within ±3% on other wheels
Plus and minus sizes that keep the overall height within about 3% (a rule of thumb from Discount Tire and 1010tires), widths within 30 mm. Calculated, not a list of tires on sale: check that a tire exists in that size.
14 in wheels (one wheel size smaller)
| Size | Height | Height change | Width change |
|---|---|---|---|
| 195/65R14 (compare) | 24.0 in | +0.1% | +20 mm |
| 155/80R14 (compare) | 23.8 in | -0.8% | -20 mm |
| 165/75R14 (compare) | 23.7 in | -0.9% | -10 mm |
| 185/70R14 (compare) | 24.2 in | +1.0% | +10 mm |
16 in wheels (one wheel size larger)
| Size | Height | Height change | Width change |
|---|---|---|---|
| 155/65R16 (compare) | 23.9 in | -0.1% | -20 mm |
| 185/55R16 (compare) | 24.0 in | +0.2% | +10 mm |
| 205/50R16 (compare) | 24.1 in | +0.5% | +30 mm |
| 165/60R16 (compare) | 23.8 in | -0.7% | -10 mm |
17 in wheels (two wheel sizes larger)
| Size | Height | Height change | Width change |
|---|---|---|---|
| 195/45R17 (compare) | 23.9 in | -0.2% | +20 mm |
| 175/50R17 (compare) | 23.9 in | -0.3% | +0 mm |
| 165/55R17 (compare) | 24.1 in | +0.8% | -10 mm |
| 155/55R17 (compare) | 23.7 in | -1.0% | -20 mm |
Try it with your numbers
Compare 175/65R15 with another size · Convert to metric or find a 33 in size · Sizes that fit my wheel
Calculated from the size alone. Real tires vary a little by brand and model, and the loaded radius is a bit smaller. Confirm the wheel width range, clearance, load index and speed rating for your vehicle. See how to read a tire size, the load index chart and the speed rating chart.
Browse: all sizes in inches · 205/70R14 · 185/60R15.