Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/90-15 | 145/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.86 (606) | 22.42 (569.5) | -1.44 (-36.5) -6% |
| Width inches (mm) | 4.92 (125) | 5.71 (145) | 0.79 (20) 16% |
| Circum. inches (mm) | 74.95 (1903.81) | 70.44 (1789.14) | -4.51 (-114.67) -6% |
| Sidewall Height inches (mm) | 4.43 (112.5) | 3.71 (94.25) | -0.72 (-18.25) -16.2% |
| Revolutions per mile (km) | 845.33 (525.26) | 899.51 (558.93) | 54.18 (33.66) 6.4% |
145/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.8 mph (30.25 km/h) |
| 25 mph (40.23 km/h) | 23.49 mph (37.81 km/h) |
| 30 mph (48.28 km/h) | 28.19 mph (45.37 km/h) |
| 35 mph (56.33 km/h) | 32.89 mph (52.93 km/h) |
| 40 mph (64.37 km/h) | 37.59 mph (60.5 km/h) |
| 45 mph (72.42 km/h) | 42.29 mph (68.06 km/h) |
| 50 mph (80.47 km/h) | 46.99 mph (75.62 km/h) |
| 55 mph (88.51 km/h) | 51.69 mph (83.18 km/h) |
| 60 mph (96.56 km/h) | 56.39 mph (90.74 km/h) |
| 65 mph (104.61 km/h) | 61.08 mph (98.31 km/h) |
| 70 mph (112.65 km/h) | 65.78 mph (105.87 km/h) |
| 75 mph (120.7 km/h) | 70.48 mph (113.43 km/h) |
| 80 mph (128.75 km/h) | 75.18 mph (120.99 km/h) |
| 85 mph (136.79 km/h) | 79.88 mph (128.56 km/h) |
| 90 mph (144.84 km/h) | 84.58 mph (136.12 km/h) |
| 95 mph (152.89 km/h) | 89.28 mph (143.68 km/h) |
| 100 mph (160.93 km/h) | 93.98 mph (151.24 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2289 | 2659 | 2864 | 2990 | 3127 | 3224 | 3331 | 3458 | 3633 | 3809 | 4003 | 4159 | 4442 | 4753 | 4997 | 5153 | 5241 | 5562 | 6010 | 6984 |
Better Fuel Economy Factory Ratios Increased Power
