28x8.50R14 tire size
28x8.50R14 is a flotation (inch) size: 28.0" tall, 8.5" wide, on a 14" rim — about a 220/80R14. The sidewall is 7.0" and the tire turns 720 times per mile.
28x8.50R14 specs
| Overall diameter (height) | 28.00" · 711 mm |
|---|---|
| Section width | 8.50" · 216 mm |
| Sidewall height | 7.00" · 178 mm (82% of width) |
| Rim diameter | 14" |
| Circumference | 87.96" · 2.234 m |
| Revolutions per mile | 720 (448 per km) |
| Closest metric size | 220/80R14 |
Equivalent sizes on a 14" 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 | |
|---|---|---|---|---|---|
| 28x10.00R14 | 28.00" | 0.00% | +38 mm | 60.0 mph | calculate → |
| 28x11.00R14 | 28.00" | 0.00% | +63 mm | 60.0 mph | calculate → |
| 205R14 | 27.24" | -2.73% | -11 mm | 58.4 mph | calculate → |
Try another size against 28x8.50R14
Questions
What size is 28x8.50R14 in inches?
28x8.50R14 is about 28.0" tall and 8.5" wide on a 14-inch rim — roughly a 220/80R14 in inch sizing.
What does 28x8.50R14 mean?
28" overall diameter, 8.50" section width, radial, 14" rim.
What tire sizes are equivalent to 28x8.50R14?
On the same 14" rim, within 3% of the diameter: 28x10.00R14 (0.00%), 28x11.00R14 (0.00%), 205R14 (-2.73%).
How many revolutions per mile does a 28x8.50R14 tire make?
About 720 revolutions per mile (circumference 88.0").
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.