Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 80/100-18 | 100/100-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.3 (617.2) | 25.87 (657.2) | 1.57 (40) 6.5% |
| Width inches (mm) | 3.15 (80) | 3.94 (100) | 0.79 (20) 25% |
| Circum. inches (mm) | 76.34 (1938.99) | 81.29 (2064.65) | 4.95 (125.66) 6.5% |
| Sidewall Height inches (mm) | 3.15 (80) | 3.94 (100) | 0.79 (20) 25% |
| Revolutions per mile (km) | 829.99 (515.73) | 779.47 (484.34) | -50.52 (-31.39) -6.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.3 mph (34.27 km/h) |
| 25 mph (40.23 km/h) | 26.62 mph (42.84 km/h) |
| 30 mph (48.28 km/h) | 31.94 mph (51.41 km/h) |
| 35 mph (56.33 km/h) | 37.27 mph (59.98 km/h) |
| 40 mph (64.37 km/h) | 42.59 mph (68.55 km/h) |
| 45 mph (72.42 km/h) | 47.92 mph (77.11 km/h) |
| 50 mph (80.47 km/h) | 53.24 mph (85.68 km/h) |
| 55 mph (88.51 km/h) | 58.56 mph (94.25 km/h) |
| 60 mph (96.56 km/h) | 63.89 mph (102.82 km/h) |
| 65 mph (104.61 km/h) | 69.21 mph (111.39 km/h) |
| 70 mph (112.65 km/h) | 74.54 mph (119.96 km/h) |
| 75 mph (120.7 km/h) | 79.86 mph (128.52 km/h) |
| 80 mph (128.75 km/h) | 85.18 mph (137.09 km/h) |
| 85 mph (136.79 km/h) | 90.51 mph (145.66 km/h) |
| 90 mph (144.84 km/h) | 95.83 mph (154.23 km/h) |
| 95 mph (152.89 km/h) | 101.16 mph (162.8 km/h) |
| 100 mph (160.93 km/h) | 106.48 mph (171.36 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1984 | 2304 | 2482 | 2591 | 2710 | 2794 | 2887 | 2997 | 3148 | 3300 | 3469 | 3604 | 3849 | 4119 | 4330 | 4465 | 4541 | 4820 | 5208 | 6052 |
Better Fuel Economy Factory Ratios Increased Power
