Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 100/80-18 | 100/90-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.3 (617.2) | 24.09 (611.8) | -0.21 (-5.4) -0.9% |
| Width inches (mm) | 3.94 (100) | 3.94 (100) | 0 (0) 0% |
| Circum. inches (mm) | 76.34 (1938.99) | 75.67 (1922.03) | -0.67 (-16.96) -0.9% |
| Sidewall Height inches (mm) | 3.15 (80) | 3.54 (90) | 0.39 (10) 12.5% |
| Revolutions per mile (km) | 829.99 (515.73) | 837.32 (520.28) | 7.33 (4.55) 0.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.83 mph (31.91 km/h) |
| 25 mph (40.23 km/h) | 24.78 mph (39.88 km/h) |
| 30 mph (48.28 km/h) | 29.74 mph (47.86 km/h) |
| 35 mph (56.33 km/h) | 34.69 mph (55.83 km/h) |
| 40 mph (64.37 km/h) | 39.65 mph (63.81 km/h) |
| 45 mph (72.42 km/h) | 44.61 mph (71.79 km/h) |
| 50 mph (80.47 km/h) | 49.56 mph (79.76 km/h) |
| 55 mph (88.51 km/h) | 54.52 mph (87.74 km/h) |
| 60 mph (96.56 km/h) | 59.48 mph (95.72 km/h) |
| 65 mph (104.61 km/h) | 64.43 mph (103.69 km/h) |
| 70 mph (112.65 km/h) | 69.39 mph (111.67 km/h) |
| 75 mph (120.7 km/h) | 74.34 mph (119.64 km/h) |
| 80 mph (128.75 km/h) | 79.3 mph (127.62 km/h) |
| 85 mph (136.79 km/h) | 84.26 mph (135.6 km/h) |
| 90 mph (144.84 km/h) | 89.21 mph (143.57 km/h) |
| 95 mph (152.89 km/h) | 94.17 mph (151.55 km/h) |
| 100 mph (160.93 km/h) | 99.13 mph (159.53 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2131 | 2475 | 2666 | 2784 | 2911 | 3001 | 3101 | 3219 | 3382 | 3545 | 3727 | 3872 | 4135 | 4425 | 4652 | 4797 | 4878 | 5177 | 5595 | 6501 |
Better Fuel Economy Factory Ratios Increased Power
