155/70R13 dimensions
| Measure | Inches | Millimetres |
|---|---|---|
| Overall height | 21.54 in | 547 mm |
| Section width | 6.10 in | 155 mm |
| Sidewall height | 4.27 in | 108.5 mm |
| Wheel diameter | 13 in | 330 mm |
| Circumference | 67.7 in | 1,719 mm |
| Revolutions per mile | 936.2 |
The math
| Step | Math | Result |
|---|---|---|
| Sidewall | 155 × 70% = 108.5 mm ÷ 25.4 | 4.27 in |
| Overall height | 13 + 2 × 4.27 | 21.54 in |
| Width | 155 mm ÷ 25.4 | 6.10 in |
| Circumference | π × 21.54 | 67.7 in |
| Revs per mile | 63,360 ÷ 67.7 | 936.2 |
With a 4.3 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 13 in wheel
Each row changes one thing and shows the height change against 155/70R13, 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 | 165/70R13 (compare) | 22.1 in | +2.6% | 61.5 mph | Close match |
| Taller sidewall | 155/75R13 (compare) | 22.2 in | +2.8% | 61.7 mph | Close match |
| Shorter sidewall | 155/65R13 (compare) | 20.9 in | -2.8% | 58.3 mph | Close match |
| Wider, shorter sidewall | 165/65R13 (compare) | 21.4 in | -0.5% | 59.7 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 larger)
| Size | Height | Height change | Width change |
|---|---|---|---|
| 175/55R14 (compare) | 21.6 in | +0.2% | +20 mm |
| 155/60R14 (compare) | 21.3 in | -1.0% | +0 mm |
| 165/60R14 (compare) | 21.8 in | +1.2% | +10 mm |
| 185/50R14 (compare) | 21.3 in | -1.2% | +30 mm |
15 in wheels (two wheel sizes larger)
| Size | Height | Height change | Width change |
|---|---|---|---|
| 185/45R15 (compare) | 21.6 in | +0.1% | +30 mm |
| 165/50R15 (compare) | 21.5 in | -0.2% | +10 mm |
| 155/55R15 (compare) | 21.7 in | +0.8% | +0 mm |
| 175/45R15 (compare) | 21.2 in | -1.6% | +20 mm |
Try it with your numbers
Compare 155/70R13 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 · 145/80R13 · 155/80R13.