Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 80/100-18 | 80/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.3 (617.2) | 23.67 (601.2) | -0.63 (-16) -2.6% |
| Width inches (mm) | 3.15 (80) | 3.15 (80) | 0 (0) 0% |
| Circum. inches (mm) | 76.34 (1938.99) | 74.36 (1888.73) | -1.98 (-50.27) -2.6% |
| Sidewall Height inches (mm) | 3.15 (80) | 2.83 (72) | -0.31 (-8) -10% |
| Revolutions per mile (km) | 829.99 (515.73) | 852.08 (529.46) | 22.09 (13.73) 2.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.48 mph (31.35 km/h) |
| 25 mph (40.23 km/h) | 24.35 mph (39.19 km/h) |
| 30 mph (48.28 km/h) | 29.22 mph (47.03 km/h) |
| 35 mph (56.33 km/h) | 34.09 mph (54.87 km/h) |
| 40 mph (64.37 km/h) | 38.96 mph (62.71 km/h) |
| 45 mph (72.42 km/h) | 43.83 mph (70.54 km/h) |
| 50 mph (80.47 km/h) | 48.7 mph (78.38 km/h) |
| 55 mph (88.51 km/h) | 53.57 mph (86.22 km/h) |
| 60 mph (96.56 km/h) | 58.44 mph (94.06 km/h) |
| 65 mph (104.61 km/h) | 63.31 mph (101.9 km/h) |
| 70 mph (112.65 km/h) | 68.19 mph (109.73 km/h) |
| 75 mph (120.7 km/h) | 73.06 mph (117.57 km/h) |
| 80 mph (128.75 km/h) | 77.93 mph (125.41 km/h) |
| 85 mph (136.79 km/h) | 82.8 mph (133.25 km/h) |
| 90 mph (144.84 km/h) | 87.67 mph (141.09 km/h) |
| 95 mph (152.89 km/h) | 92.54 mph (148.92 km/h) |
| 100 mph (160.93 km/h) | 97.41 mph (156.76 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2168 | 2519 | 2713 | 2833 | 2962 | 3054 | 3156 | 3276 | 3442 | 3608 | 3792 | 3940 | 4208 | 4503 | 4734 | 4881 | 4964 | 5269 | 5693 | 6616 |
Better Fuel Economy Factory Ratios Increased Power
