Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/75-19.5 | 37.5/12.5-19.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.97 (862.8) | 37.53 (953.22) | 3.56 (90.42) 10.5% |
| Width inches (mm) | 9.65 (245) | 12.52 (318) | 2.87 (73) 29.8% |
| Circum. inches (mm) | 106.72 (2710.57) | 117.9 (2994.63) | 11.18 (284.06) 10.5% |
| Sidewall Height inches (mm) | 7.23 (183.75) | 9.01 (228.96) | 1.78 (45.21) 24.6% |
| Revolutions per mile (km) | 593.73 (368.93) | 537.41 (333.93) | -56.32 (-35) -9.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.1 mph (35.56 km/h) |
| 25 mph (40.23 km/h) | 27.62 mph (44.45 km/h) |
| 30 mph (48.28 km/h) | 33.14 mph (53.34 km/h) |
| 35 mph (56.33 km/h) | 38.67 mph (62.23 km/h) |
| 40 mph (64.37 km/h) | 44.19 mph (71.12 km/h) |
| 45 mph (72.42 km/h) | 49.72 mph (80.01 km/h) |
| 50 mph (80.47 km/h) | 55.24 mph (88.9 km/h) |
| 55 mph (88.51 km/h) | 60.76 mph (97.79 km/h) |
| 60 mph (96.56 km/h) | 66.29 mph (106.68 km/h) |
| 65 mph (104.61 km/h) | 71.81 mph (115.57 km/h) |
| 70 mph (112.65 km/h) | 77.34 mph (124.46 km/h) |
| 75 mph (120.7 km/h) | 82.86 mph (133.35 km/h) |
| 80 mph (128.75 km/h) | 88.38 mph (142.24 km/h) |
| 85 mph (136.79 km/h) | 93.91 mph (151.13 km/h) |
| 90 mph (144.84 km/h) | 99.43 mph (160.02 km/h) |
| 95 mph (152.89 km/h) | 104.96 mph (168.91 km/h) |
| 100 mph (160.93 km/h) | 110.48 mph (177.8 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1368 | 1589 | 1711 | 1787 | 1868 | 1926 | 1990 | 2066 | 2171 | 2275 | 2392 | 2485 | 2654 | 2840 | 2985 | 3079 | 3131 | 3323 | 3591 | 4173 |
Better Fuel Economy Factory Ratios Increased Power
