235/75R15 dimensions
| Measure | Inches | Millimetres |
|---|---|---|
| Overall height | 28.88 in | 734 mm |
| Section width | 9.25 in | 235 mm |
| Sidewall height | 6.94 in | 176.2 mm |
| Wheel diameter | 15 in | 381 mm |
| Circumference | 90.7 in | 2,304 mm |
| Revolutions per mile | 698.4 |
The math
| Step | Math | Result |
|---|---|---|
| Sidewall | 235 × 75% = 176.2 mm ÷ 25.4 | 6.94 in |
| Overall height | 15 + 2 × 6.94 | 28.88 in |
| Width | 235 mm ÷ 25.4 | 9.25 in |
| Circumference | π × 28.88 | 90.7 in |
| Revs per mile | 63,360 ÷ 90.7 | 698.4 |
With a 6.9 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 235/75R15, 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 | 245/75R15 (compare) | 29.5 in | +2.0% | 61.2 mph | Close match |
| Narrower | 225/75R15 (compare) | 28.3 in | -2.0% | 58.8 mph | Close match |
| Taller sidewall | 235/80R15 (compare) | 29.8 in | +3.2% | 61.9 mph | Check clearance |
| Shorter sidewall | 235/70R15 (compare) | 28.0 in | -3.2% | 58.1 mph | Check clearance |
| Wider, shorter sidewall | 245/70R15 (compare) | 28.5 in | -1.3% | 59.2 mph | Close match |
| Narrower, taller sidewall | 225/80R15 (compare) | 29.2 in | +1.0% | 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 |
|---|---|---|---|
| 235/80R14 (compare) | 28.8 in | -0.3% | +0 mm |
| 225/85R14 (compare) | 29.1 in | +0.6% | -10 mm |
| 255/75R14 (compare) | 29.1 in | +0.6% | +20 mm |
| 265/70R14 (compare) | 28.6 in | -0.9% | +30 mm |
16 in wheels (one wheel size larger)
| Size | Height | Height change | Width change |
|---|---|---|---|
| 205/80R16 (compare) | 28.9 in | +0.1% | -30 mm |
| 235/70R16 (compare) | 29.0 in | +0.3% | +0 mm |
| 255/65R16 (compare) | 29.1 in | +0.6% | +20 mm |
| 215/75R16 (compare) | 28.7 in | -0.6% | -20 mm |
17 in wheels (two wheel sizes larger)
| Size | Height | Height change | Width change |
|---|---|---|---|
| 215/70R17 (compare) | 28.9 in | -0.1% | -20 mm |
| 235/65R17 (compare) | 29.0 in | +0.5% | +0 mm |
| 255/60R17 (compare) | 29.0 in | +0.6% | +20 mm |
| 205/75R17 (compare) | 29.1 in | +0.8% | -30 mm |
Try it with your numbers
Compare 235/75R15 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 · 235/70R15 · 255/70R15.