33x12.50R15 tire size
33x12.50R15 is a flotation (inch) size: 33.0" tall, 12.5" wide, on a 15" rim — about a 320/70R15. The sidewall is 9.0" and the tire turns 611 times per mile.
33x12.50R15 specs
| Overall diameter (height) | 33.00" · 838 mm |
|---|---|
| Section width | 12.50" · 318 mm |
| Sidewall height | 9.00" · 229 mm (72% of width) |
| Rim diameter | 15" |
| Circumference | 103.67" · 2.633 m |
| Revolutions per mile | 611 (380 per km) |
| Closest metric size | 320/70R15 |
Equivalent sizes on a 15" rim
Sizes within ±5% of the overall diameter. Green rows are inside the usual ±3% limit for keeping the speedometer, ABS and gearing right; red rows are bigger changes that need clearance checks.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 32x11.50R15 | 32.00" | -3.03% | -26 mm | 58.2 mph | compare → |
| 33x10.50R15 | 33.00" | 0.00% | -51 mm | 60.0 mph | compare → |
| 33x13.50R15 | 33.00" | 0.00% | +25 mm | 60.0 mph | calculate → |
| 33x14.50R15 | 33.00" | 0.00% | +50 mm | 60.0 mph | calculate → |
| 33x11.50R15 | 33.00" | 0.00% | -26 mm | 60.0 mph | calculate → |
| 33x13.00R15 | 33.00" | 0.00% | +12 mm | 60.0 mph | calculate → |
| 33x14.00R15 | 33.00" | 0.00% | +38 mm | 60.0 mph | calculate → |
| 33x15.50R15 | 33.00" | 0.00% | +76 mm | 60.0 mph | calculate → |
| 33x16.50R15 | 33.00" | 0.00% | +101 mm | 60.0 mph | calculate → |
| 33x22.00R15 | 33.00" | 0.00% | +241 mm | 60.0 mph | calculate → |
| 33x9.50R15 | 33.00" | 0.00% | -77 mm | 60.0 mph | calculate → |
| 32x10.50R15 | 32.00" | -3.03% | -51 mm | 58.2 mph | calculate → |
| 32x10.00R15 | 32.00" | -3.03% | -64 mm | 58.2 mph | calculate → |
| 32x14.00R15 | 32.00" | -3.03% | +38 mm | 58.2 mph | calculate → |
| 32x16.00R15 | 32.00" | -3.03% | +88 mm | 58.2 mph | calculate → |
| 32x17.50R15 | 32.00" | -3.03% | +127 mm | 58.2 mph | calculate → |
| 32x9.50R15 | 32.00" | -3.03% | -77 mm | 58.2 mph | calculate → |
| 34x10.50R15 | 34.00" | +3.03% | -51 mm | 61.8 mph | calculate → |
| 34x12.50R15 | 34.00" | +3.03% | 0 mm | 61.8 mph | calculate → |
| 33x19.50R15 | 33.00" | 0.00% | +177 mm | 60.0 mph | calculate → |
| 33x21.50R15 | 33.00" | 0.00% | +228 mm | 60.0 mph | calculate → |
| 33x9.00R15 | 33.00" | 0.00% | -89 mm | 60.0 mph | calculate → |
| 32x18.50R15 | 32.00" | -3.03% | +152 mm | 58.2 mph | calculate → |
| 34x9.50R15 | 34.00" | +3.03% | -77 mm | 61.8 mph | calculate → |
Plus / minus sizing: 14" and 16" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 285/75R16 common | 32.83" | -0.51% | -33 mm | 59.7 mph | compare → |
| 305/70R16 | 32.81" | -0.57% | -13 mm | 59.7 mph | compare → |
| 255/85R16 | 33.07" | +0.20% | -63 mm | 60.1 mph | compare → |
| 33x10.50R16 | 33.00" | 0.00% | -51 mm | 60.0 mph | calculate → |
| 33x12.50R16 | 33.00" | 0.00% | 0 mm | 60.0 mph | calculate → |
| 33x11.50R16 | 33.00" | 0.00% | -26 mm | 60.0 mph | calculate → |
| 33x13.00R16 | 33.00" | 0.00% | +12 mm | 60.0 mph | calculate → |
| 33x13.50R16 | 33.00" | 0.00% | +25 mm | 60.0 mph | calculate → |
| 33x14.50R16 | 33.00" | 0.00% | +50 mm | 60.0 mph | calculate → |
| 33x14.00R16 | 33.00" | 0.00% | +38 mm | 60.0 mph | calculate → |
| 33x9.50R16 | 33.00" | 0.00% | -77 mm | 60.0 mph | calculate → |
| 265/80R16 | 32.69" | -0.93% | -53 mm | 59.4 mph | calculate → |
Try another size against 33x12.50R15
Questions
What size is 33x12.50R15 in inches?
33x12.50R15 is about 33.0" tall and 12.5" wide on a 15-inch rim — roughly a 320/70R15 in inch sizing.
What does 33x12.50R15 mean?
33" overall diameter, 12.50" section width, radial, 15" rim.
What tire sizes are equivalent to 33x12.50R15?
On the same 15" rim, within 3% of the diameter: 33x10.50R15 (0.00%), 33x11.50R15 (0.00%), 33x13.50R15 (0.00%), 33x13.00R15 (0.00%), 33x14.50R15 (0.00%), 33x14.00R15 (0.00%).
How many revolutions per mile does a 33x12.50R15 tire make?
About 611 revolutions per mile (circumference 103.7").
How these numbers are computed
Diameter = rim + 2 × sidewall, sidewall = width × aspect ÷ 100, circumference = π × diameter, revolutions per mile = 63,360 ÷ circumference. Real tires differ by brand by a few tenths of an inch. Last reviewed October 14, 2026.