46x19.50R20 tire size
46x19.50R20 is a flotation (inch) size: 46.0" tall, 19.5" wide, on a 20" rim — about a 500/65R20. The sidewall is 13.0" and the tire turns 438 times per mile.
46x19.50R20 specs
| Overall diameter (height) | 46.00" · 1168 mm |
|---|---|
| Section width | 19.50" · 495 mm |
| Sidewall height | 13.00" · 330 mm (67% of width) |
| Rim diameter | 20" |
| Circumference | 144.51" · 3.671 m |
| Revolutions per mile | 438 (272 per km) |
| Closest metric size | 500/65R20 |
Equivalent sizes on a 20" 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 | |
|---|---|---|---|---|---|
| 45x14.50R20 | 45.00" | -2.17% | -127 mm | 58.7 mph | calculate → |
| 44x13.50R20 | 44.00" | -4.35% | -152 mm | 57.4 mph | calculate → |
| 44x19.50R20 | 44.00" | -4.35% | 0 mm | 57.4 mph | calculate → |
| 44x21.00R20 | 44.00" | -4.35% | +38 mm | 57.4 mph | calculate → |
Try another size against 46x19.50R20
Questions
What size is 46x19.50R20 in inches?
46x19.50R20 is about 46.0" tall and 19.5" wide on a 20-inch rim — roughly a 500/65R20 in inch sizing.
What does 46x19.50R20 mean?
46" overall diameter, 19.50" section width, radial, 20" rim.
What tire sizes are equivalent to 46x19.50R20?
On the same 20" rim, within 3% of the diameter: 45x14.50R20 (-2.17%), 44x13.50R20 (-4.35%), 44x19.50R20 (-4.35%), 44x21.00R20 (-4.35%).
How many revolutions per mile does a 46x19.50R20 tire make?
About 438 revolutions per mile (circumference 144.5").
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.