Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 80/100-18 | 70/100-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.3 (617.2) | 23.51 (597.2) | -0.79 (-20) -3.2% |
| Width inches (mm) | 3.15 (80) | 2.76 (70) | -0.39 (-10) -12.5% |
| Circum. inches (mm) | 76.34 (1938.99) | 73.86 (1876.16) | -2.47 (-62.83) -3.2% |
| Sidewall Height inches (mm) | 3.15 (80) | 2.76 (70) | -0.39 (-10) -12.5% |
| Revolutions per mile (km) | 829.99 (515.73) | 857.79 (533) | 27.8 (17.27) 3.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.35 mph (31.14 km/h) |
| 25 mph (40.23 km/h) | 24.19 mph (38.93 km/h) |
| 30 mph (48.28 km/h) | 29.03 mph (46.72 km/h) |
| 35 mph (56.33 km/h) | 33.87 mph (54.5 km/h) |
| 40 mph (64.37 km/h) | 38.7 mph (62.29 km/h) |
| 45 mph (72.42 km/h) | 43.54 mph (70.07 km/h) |
| 50 mph (80.47 km/h) | 48.38 mph (77.86 km/h) |
| 55 mph (88.51 km/h) | 53.22 mph (85.65 km/h) |
| 60 mph (96.56 km/h) | 58.06 mph (93.43 km/h) |
| 65 mph (104.61 km/h) | 62.89 mph (101.22 km/h) |
| 70 mph (112.65 km/h) | 67.73 mph (109 km/h) |
| 75 mph (120.7 km/h) | 72.57 mph (116.79 km/h) |
| 80 mph (128.75 km/h) | 77.41 mph (124.58 km/h) |
| 85 mph (136.79 km/h) | 82.25 mph (132.36 km/h) |
| 90 mph (144.84 km/h) | 87.08 mph (140.15 km/h) |
| 95 mph (152.89 km/h) | 91.92 mph (147.93 km/h) |
| 100 mph (160.93 km/h) | 96.76 mph (155.72 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2183 | 2536 | 2731 | 2852 | 2982 | 3075 | 3177 | 3298 | 3465 | 3632 | 3818 | 3966 | 4236 | 4533 | 4765 | 4914 | 4997 | 5304 | 5731 | 6660 |
Better Fuel Economy Factory Ratios Increased Power
