Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 80/100-18 | 90/90-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.3 (617.2) | 23.38 (593.8) | -0.92 (-23.4) -3.8% |
| Width inches (mm) | 3.15 (80) | 3.54 (90) | 0.39 (10) 12.5% |
| Circum. inches (mm) | 76.34 (1938.99) | 73.44 (1865.48) | -2.89 (-73.51) -3.8% |
| Sidewall Height inches (mm) | 3.15 (80) | 3.19 (81) | 0.04 (1) 1.3% |
| Revolutions per mile (km) | 829.99 (515.73) | 862.7 (536.05) | 32.71 (20.32) 3.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.24 mph (30.97 km/h) |
| 25 mph (40.23 km/h) | 24.05 mph (38.71 km/h) |
| 30 mph (48.28 km/h) | 28.86 mph (46.45 km/h) |
| 35 mph (56.33 km/h) | 33.67 mph (54.19 km/h) |
| 40 mph (64.37 km/h) | 38.48 mph (61.93 km/h) |
| 45 mph (72.42 km/h) | 43.29 mph (69.67 km/h) |
| 50 mph (80.47 km/h) | 48.1 mph (77.42 km/h) |
| 55 mph (88.51 km/h) | 52.91 mph (85.16 km/h) |
| 60 mph (96.56 km/h) | 57.73 mph (92.9 km/h) |
| 65 mph (104.61 km/h) | 62.54 mph (100.64 km/h) |
| 70 mph (112.65 km/h) | 67.35 mph (108.38 km/h) |
| 75 mph (120.7 km/h) | 72.16 mph (116.12 km/h) |
| 80 mph (128.75 km/h) | 76.97 mph (123.87 km/h) |
| 85 mph (136.79 km/h) | 81.78 mph (131.61 km/h) |
| 90 mph (144.84 km/h) | 86.59 mph (139.35 km/h) |
| 95 mph (152.89 km/h) | 91.4 mph (147.09 km/h) |
| 100 mph (160.93 km/h) | 96.21 mph (154.83 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2195 | 2550 | 2747 | 2868 | 2999 | 3092 | 3195 | 3316 | 3485 | 3653 | 3840 | 3989 | 4260 | 4559 | 4793 | 4942 | 5026 | 5334 | 5764 | 6698 |
Better Fuel Economy Factory Ratios Increased Power
