Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/75-15 | 30/10.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.06 (763.5) | 29.93 (760.14) | -0.13 (-3.36) -0.4% |
| Width inches (mm) | 10.04 (255) | 10.51 (267) | 0.47 (12) 4.7% |
| Circum. inches (mm) | 94.43 (2398.61) | 94.02 (2388.05) | -0.42 (-10.56) -0.4% |
| Sidewall Height inches (mm) | 7.53 (191.25) | 7.46 (189.57) | -0.07 (-1.68) -0.9% |
| Revolutions per mile (km) | 670.95 (416.91) | 673.92 (418.75) | 2.97 (1.84) 0.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.91 mph (32.05 km/h) |
| 25 mph (40.23 km/h) | 24.89 mph (40.06 km/h) |
| 30 mph (48.28 km/h) | 29.87 mph (48.07 km/h) |
| 35 mph (56.33 km/h) | 34.85 mph (56.08 km/h) |
| 40 mph (64.37 km/h) | 39.82 mph (64.09 km/h) |
| 45 mph (72.42 km/h) | 44.8 mph (72.1 km/h) |
| 50 mph (80.47 km/h) | 49.78 mph (80.11 km/h) |
| 55 mph (88.51 km/h) | 54.76 mph (88.12 km/h) |
| 60 mph (96.56 km/h) | 59.74 mph (96.14 km/h) |
| 65 mph (104.61 km/h) | 64.71 mph (104.15 km/h) |
| 70 mph (112.65 km/h) | 69.69 mph (112.16 km/h) |
| 75 mph (120.7 km/h) | 74.67 mph (120.17 km/h) |
| 80 mph (128.75 km/h) | 79.65 mph (128.18 km/h) |
| 85 mph (136.79 km/h) | 84.63 mph (136.19 km/h) |
| 90 mph (144.84 km/h) | 89.6 mph (144.2 km/h) |
| 95 mph (152.89 km/h) | 94.58 mph (152.22 km/h) |
| 100 mph (160.93 km/h) | 99.56 mph (160.23 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1715 | 1992 | 2146 | 2240 | 2343 | 2416 | 2496 | 2591 | 2722 | 2853 | 2999 | 3116 | 3328 | 3561 | 3744 | 3861 | 3926 | 4167 | 4503 | 5233 |
Better Fuel Economy Factory Ratios Increased Power
