Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 80/80-17 | 70/80-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.04 (559.8) | 22.41 (569.2) | 0.37 (9.4) 1.7% |
| Width inches (mm) | 3.15 (80) | 2.76 (70) | -0.39 (-10) -12.5% |
| Circum. inches (mm) | 69.24 (1758.66) | 70.4 (1788.19) | 1.16 (29.53) 1.7% |
| Sidewall Height inches (mm) | 2.52 (64) | 2.2 (56) | -0.31 (-8) -12.5% |
| Revolutions per mile (km) | 915.09 (568.61) | 899.98 (559.22) | -15.11 (-9.39) -1.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.34 mph (32.73 km/h) |
| 25 mph (40.23 km/h) | 25.42 mph (40.91 km/h) |
| 30 mph (48.28 km/h) | 30.5 mph (49.09 km/h) |
| 35 mph (56.33 km/h) | 35.59 mph (57.27 km/h) |
| 40 mph (64.37 km/h) | 40.67 mph (65.45 km/h) |
| 45 mph (72.42 km/h) | 45.76 mph (73.64 km/h) |
| 50 mph (80.47 km/h) | 50.84 mph (81.82 km/h) |
| 55 mph (88.51 km/h) | 55.92 mph (90 km/h) |
| 60 mph (96.56 km/h) | 61.01 mph (98.18 km/h) |
| 65 mph (104.61 km/h) | 66.09 mph (106.36 km/h) |
| 70 mph (112.65 km/h) | 71.18 mph (114.55 km/h) |
| 75 mph (120.7 km/h) | 76.26 mph (122.73 km/h) |
| 80 mph (128.75 km/h) | 81.34 mph (130.91 km/h) |
| 85 mph (136.79 km/h) | 86.43 mph (139.09 km/h) |
| 90 mph (144.84 km/h) | 91.51 mph (147.27 km/h) |
| 95 mph (152.89 km/h) | 96.6 mph (155.46 km/h) |
| 100 mph (160.93 km/h) | 101.68 mph (163.64 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2290 | 2661 | 2865 | 2992 | 3128 | 3226 | 3333 | 3460 | 3635 | 3811 | 4006 | 4161 | 4444 | 4756 | 5000 | 5156 | 5243 | 5565 | 6013 | 6988 |
Better Fuel Economy Factory Ratios Increased Power
