Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-13 | 145/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.85 (504.2) | 22.42 (569.5) | 2.57 (65.3) 13% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 62.36 (1583.99) | 70.44 (1789.14) | 8.08 (205.15) 13% |
| Sidewall Height inches (mm) | 3.43 (87) | 3.71 (94.25) | 0.29 (7.25) 8.3% |
| Revolutions per mile (km) | 1016.01 (631.32) | 899.51 (558.93) | -116.5 (-72.39) -11.5% |
145/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.59 mph (36.36 km/h) |
| 25 mph (40.23 km/h) | 28.24 mph (45.44 km/h) |
| 30 mph (48.28 km/h) | 33.89 mph (54.53 km/h) |
| 35 mph (56.33 km/h) | 39.53 mph (63.62 km/h) |
| 40 mph (64.37 km/h) | 45.18 mph (72.71 km/h) |
| 45 mph (72.42 km/h) | 50.83 mph (81.8 km/h) |
| 50 mph (80.47 km/h) | 56.48 mph (90.89 km/h) |
| 55 mph (88.51 km/h) | 62.12 mph (99.98 km/h) |
| 60 mph (96.56 km/h) | 67.77 mph (109.07 km/h) |
| 65 mph (104.61 km/h) | 73.42 mph (118.16 km/h) |
| 70 mph (112.65 km/h) | 79.07 mph (127.24 km/h) |
| 75 mph (120.7 km/h) | 84.71 mph (136.33 km/h) |
| 80 mph (128.75 km/h) | 90.36 mph (145.42 km/h) |
| 85 mph (136.79 km/h) | 96.01 mph (154.51 km/h) |
| 90 mph (144.84 km/h) | 101.66 mph (163.6 km/h) |
| 95 mph (152.89 km/h) | 107.3 mph (172.69 km/h) |
| 100 mph (160.93 km/h) | 112.95 mph (181.78 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
