225/70R15 dimensions
| Measure | Inches | Millimetres |
|---|---|---|
| Overall height | 27.40 in | 696 mm |
| Section width | 8.86 in | 225 mm |
| Sidewall height | 6.20 in | 157.5 mm |
| Wheel diameter | 15 in | 381 mm |
| Circumference | 86.1 in | 2,187 mm |
| Revolutions per mile | 736.0 |
The math
| Step | Math | Result |
|---|---|---|
| Sidewall | 225 × 70% = 157.5 mm ÷ 25.4 | 6.20 in |
| Overall height | 15 + 2 × 6.20 | 27.40 in |
| Width | 225 mm ÷ 25.4 | 8.86 in |
| Circumference | π × 27.40 | 86.1 in |
| Revs per mile | 63,360 ÷ 86.1 | 736.0 |
With a 6.2 in sidewall this is a tall sidewall with more cushion and flex. 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 225/70R15, 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 | 235/70R15 (compare) | 28.0 in | +2.0% | 61.2 mph | Close match |
| Narrower | 215/70R15 (compare) | 26.9 in | -2.0% | 58.8 mph | Close match |
| Taller sidewall | 225/75R15 (compare) | 28.3 in | +3.2% | 61.9 mph | Check clearance |
| Shorter sidewall | 225/65R15 (compare) | 26.5 in | -3.2% | 58.1 mph | Check clearance |
| Wider, shorter sidewall | 235/65R15 (compare) | 27.0 in | -1.4% | 59.2 mph | Close match |
| Narrower, taller sidewall | 215/75R15 (compare) | 27.7 in | +1.1% | 60.6 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 |
|---|---|---|---|
| 245/70R14 (compare) | 27.5 in | +0.4% | +20 mm |
| 225/75R14 (compare) | 27.3 in | -0.4% | +0 mm |
| 215/80R14 (compare) | 27.5 in | +0.5% | -10 mm |
| 205/85R14 (compare) | 27.7 in | +1.2% | -20 mm |
16 in wheels (one wheel size larger)
| Size | Height | Height change | Width change |
|---|---|---|---|
| 205/70R16 (compare) | 27.3 in | -0.4% | -20 mm |
| 195/75R16 (compare) | 27.5 in | +0.4% | -30 mm |
| 225/65R16 (compare) | 27.5 in | +0.4% | +0 mm |
| 245/60R16 (compare) | 27.6 in | +0.6% | +20 mm |
17 in wheels (two wheel sizes larger)
| Size | Height | Height change | Width change |
|---|---|---|---|
| 205/65R17 (compare) | 27.5 in | +0.3% | -20 mm |
| 245/55R17 (compare) | 27.6 in | +0.8% | +20 mm |
| 235/55R17 (compare) | 27.2 in | -0.8% | +10 mm |
| 225/60R17 (compare) | 27.6 in | +0.8% | +0 mm |
Try it with your numbers
Compare 225/70R15 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 · 225/65R15 · 235/70R15.