Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/90-15 | 170/90-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.92 (633) | 27.05 (687) | 2.13 (54) 8.5% |
| Width inches (mm) | 5.51 (140) | 6.69 (170) | 1.18 (30) 21.4% |
| Circum. inches (mm) | 78.29 (1988.63) | 84.97 (2158.27) | 6.68 (169.65) 8.5% |
| Sidewall Height inches (mm) | 4.96 (126) | 6.02 (153) | 1.06 (27) 21.4% |
| Revolutions per mile (km) | 809.27 (502.86) | 745.66 (463.33) | -63.61 (-39.53) -7.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.71 mph (34.93 km/h) |
| 25 mph (40.23 km/h) | 27.13 mph (43.67 km/h) |
| 30 mph (48.28 km/h) | 32.56 mph (52.4 km/h) |
| 35 mph (56.33 km/h) | 37.99 mph (61.13 km/h) |
| 40 mph (64.37 km/h) | 43.41 mph (69.87 km/h) |
| 45 mph (72.42 km/h) | 48.84 mph (78.6 km/h) |
| 50 mph (80.47 km/h) | 54.27 mph (87.33 km/h) |
| 55 mph (88.51 km/h) | 59.69 mph (96.07 km/h) |
| 60 mph (96.56 km/h) | 65.12 mph (104.8 km/h) |
| 65 mph (104.61 km/h) | 70.55 mph (113.53 km/h) |
| 70 mph (112.65 km/h) | 75.97 mph (122.26 km/h) |
| 75 mph (120.7 km/h) | 81.4 mph (131 km/h) |
| 80 mph (128.75 km/h) | 86.82 mph (139.73 km/h) |
| 85 mph (136.79 km/h) | 92.25 mph (148.46 km/h) |
| 90 mph (144.84 km/h) | 97.68 mph (157.2 km/h) |
| 95 mph (152.89 km/h) | 103.1 mph (165.93 km/h) |
| 100 mph (160.93 km/h) | 108.53 mph (174.66 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1898 | 2204 | 2374 | 2479 | 2592 | 2673 | 2762 | 2867 | 3012 | 3157 | 3319 | 3448 | 3682 | 3940 | 4142 | 4272 | 4344 | 4611 | 4982 | 5790 |
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