Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 28/9-15 | 30/15.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.98 (710.76) | 29.89 (759.24) | 1.91 (48.48) 6.8% |
| Width inches (mm) | 9.02 (229) | 15.51 (394) | 6.5 (165) 72.1% |
| Circum. inches (mm) | 87.91 (2232.92) | 93.91 (2385.22) | 6 (152.3) 6.8% |
| Sidewall Height inches (mm) | 6.49 (164.88) | 7.45 (189.12) | 0.95 (24.24) 14.7% |
| Revolutions per mile (km) | 720.74 (447.84) | 674.71 (419.25) | -46.02 (-28.6) -6.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.36 mph (34.38 km/h) |
| 25 mph (40.23 km/h) | 26.71 mph (42.98 km/h) |
| 30 mph (48.28 km/h) | 32.05 mph (51.57 km/h) |
| 35 mph (56.33 km/h) | 37.39 mph (60.17 km/h) |
| 40 mph (64.37 km/h) | 42.73 mph (68.76 km/h) |
| 45 mph (72.42 km/h) | 48.07 mph (77.36 km/h) |
| 50 mph (80.47 km/h) | 53.41 mph (85.96 km/h) |
| 55 mph (88.51 km/h) | 58.75 mph (94.55 km/h) |
| 60 mph (96.56 km/h) | 64.09 mph (103.15 km/h) |
| 65 mph (104.61 km/h) | 69.43 mph (111.74 km/h) |
| 70 mph (112.65 km/h) | 74.77 mph (120.34 km/h) |
| 75 mph (120.7 km/h) | 80.12 mph (128.93 km/h) |
| 80 mph (128.75 km/h) | 85.46 mph (137.53 km/h) |
| 85 mph (136.79 km/h) | 90.8 mph (146.13 km/h) |
| 90 mph (144.84 km/h) | 96.14 mph (154.72 km/h) |
| 95 mph (152.89 km/h) | 101.48 mph (163.32 km/h) |
| 100 mph (160.93 km/h) | 106.82 mph (171.91 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1717 | 1995 | 2148 | 2243 | 2345 | 2418 | 2499 | 2594 | 2725 | 2857 | 3003 | 3120 | 3332 | 3566 | 3748 | 3865 | 3931 | 4172 | 4508 | 5239 |
Better Fuel Economy Factory Ratios Increased Power
