Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-20 | 195/75-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.85 (682) | 31.52 (800.5) | 4.67 (118.5) 17.4% |
| Width inches (mm) | 5.71 (145) | 7.68 (195) | 1.97 (50) 34.5% |
| Circum. inches (mm) | 84.35 (2142.57) | 99.01 (2514.84) | 14.66 (372.28) 17.4% |
| Sidewall Height inches (mm) | 3.43 (87) | 5.76 (146.25) | 2.33 (59.25) 68.1% |
| Revolutions per mile (km) | 751.13 (466.73) | 639.94 (397.64) | -111.19 (-69.09) -14.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.48 mph (37.78 km/h) |
| 25 mph (40.23 km/h) | 29.34 mph (47.22 km/h) |
| 30 mph (48.28 km/h) | 35.21 mph (56.67 km/h) |
| 35 mph (56.33 km/h) | 41.08 mph (66.11 km/h) |
| 40 mph (64.37 km/h) | 46.95 mph (75.56 km/h) |
| 45 mph (72.42 km/h) | 52.82 mph (85 km/h) |
| 50 mph (80.47 km/h) | 58.69 mph (94.45 km/h) |
| 55 mph (88.51 km/h) | 64.56 mph (103.89 km/h) |
| 60 mph (96.56 km/h) | 70.43 mph (113.34 km/h) |
| 65 mph (104.61 km/h) | 76.29 mph (122.78 km/h) |
| 70 mph (112.65 km/h) | 82.16 mph (132.23 km/h) |
| 75 mph (120.7 km/h) | 88.03 mph (141.67 km/h) |
| 80 mph (128.75 km/h) | 93.9 mph (151.12 km/h) |
| 85 mph (136.79 km/h) | 99.77 mph (160.56 km/h) |
| 90 mph (144.84 km/h) | 105.64 mph (170.01 km/h) |
| 95 mph (152.89 km/h) | 111.51 mph (179.45 km/h) |
| 100 mph (160.93 km/h) | 117.38 mph (188.9 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1629 | 1892 | 2037 | 2127 | 2224 | 2294 | 2370 | 2460 | 2585 | 2710 | 2848 | 2959 | 3160 | 3382 | 3555 | 3666 | 3728 | 3957 | 4276 | 4969 |
Better Fuel Economy Factory Ratios Increased Power
