Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/55-15 | 145/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.71 (551.5) | 22.42 (569.5) | 0.71 (18) 3.3% |
| Width inches (mm) | 6.1 (155) | 5.71 (145) | -0.39 (-10) -6.5% |
| Circum. inches (mm) | 68.21 (1732.59) | 70.44 (1789.14) | 2.23 (56.55) 3.3% |
| Sidewall Height inches (mm) | 3.36 (85.25) | 3.71 (94.25) | 0.35 (9) 10.6% |
| Revolutions per mile (km) | 928.87 (577.17) | 899.51 (558.93) | -29.36 (-18.24) -3.2% |
145/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.65 mph (33.24 km/h) |
| 25 mph (40.23 km/h) | 25.82 mph (41.55 km/h) |
| 30 mph (48.28 km/h) | 30.98 mph (49.86 km/h) |
| 35 mph (56.33 km/h) | 36.14 mph (58.17 km/h) |
| 40 mph (64.37 km/h) | 41.31 mph (66.47 km/h) |
| 45 mph (72.42 km/h) | 46.47 mph (74.78 km/h) |
| 50 mph (80.47 km/h) | 51.63 mph (83.09 km/h) |
| 55 mph (88.51 km/h) | 56.8 mph (91.4 km/h) |
| 60 mph (96.56 km/h) | 61.96 mph (99.71 km/h) |
| 65 mph (104.61 km/h) | 67.12 mph (108.02 km/h) |
| 70 mph (112.65 km/h) | 72.28 mph (116.33 km/h) |
| 75 mph (120.7 km/h) | 77.45 mph (124.64 km/h) |
| 80 mph (128.75 km/h) | 82.61 mph (132.95 km/h) |
| 85 mph (136.79 km/h) | 87.77 mph (141.26 km/h) |
| 90 mph (144.84 km/h) | 92.94 mph (149.57 km/h) |
| 95 mph (152.89 km/h) | 98.1 mph (157.88 km/h) |
| 100 mph (160.93 km/h) | 103.26 mph (166.19 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
