33x15.50R16.5 tire size
33x15.50R16.5 is a flotation (inch) size: 33.0" tall, 15.5" wide, on a 16.5" rim — about a 390/55R16.5. The sidewall is 8.3" and the tire turns 611 times per mile.
33x15.50R16.5 specs
| Overall diameter (height) | 33.00" · 838 mm |
|---|---|
| Section width | 15.50" · 394 mm |
| Sidewall height | 8.25" · 210 mm (53% of width) |
| Rim diameter | 16.5" |
| Circumference | 103.67" · 2.633 m |
| Revolutions per mile | 611 (380 per km) |
| Closest metric size | 390/55R16.5 |
Equivalent sizes on a 16.5" 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 | |
|---|---|---|---|---|---|
| 33x12.50R16.5 | 33.00" | 0.00% | -76 mm | 60.0 mph | calculate → |
| 33x11.50R16.5 | 33.00" | 0.00% | -102 mm | 60.0 mph | calculate → |
| 33x14.50R16.5 | 33.00" | 0.00% | -26 mm | 60.0 mph | calculate → |
| 33x14.00R16.5 | 33.00" | 0.00% | -38 mm | 60.0 mph | calculate → |
Try another size against 33x15.50R16.5
Questions
What size is 33x15.50R16.5 in inches?
33x15.50R16.5 is about 33.0" tall and 15.5" wide on a 16.5-inch rim — roughly a 390/55R16.5 in inch sizing.
What does 33x15.50R16.5 mean?
33" overall diameter, 15.50" section width, radial, 16.5" rim.
What tire sizes are equivalent to 33x15.50R16.5?
On the same 16.5" rim, within 3% of the diameter: 33x11.50R16.5 (0.00%), 33x12.50R16.5 (0.00%), 33x14.50R16.5 (0.00%), 33x14.00R16.5 (0.00%).
How many revolutions per mile does a 33x15.50R16.5 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.