Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-15 | 155/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.85 (555) | 21.1 (536) | -0.75 (-19) -3.4% |
| Width inches (mm) | 5.71 (145) | 6.1 (155) | 0.39 (10) 6.9% |
| Circum. inches (mm) | 68.65 (1743.58) | 66.3 (1683.89) | -2.35 (-59.69) -3.4% |
| Sidewall Height inches (mm) | 3.43 (87) | 3.05 (77.5) | -0.37 (-9.5) -10.9% |
| Revolutions per mile (km) | 923.01 (573.53) | 955.73 (593.86) | 32.72 (20.33) 3.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.32 mph (31.09 km/h) |
| 25 mph (40.23 km/h) | 24.14 mph (38.86 km/h) |
| 30 mph (48.28 km/h) | 28.97 mph (46.63 km/h) |
| 35 mph (56.33 km/h) | 33.8 mph (54.4 km/h) |
| 40 mph (64.37 km/h) | 38.63 mph (62.17 km/h) |
| 45 mph (72.42 km/h) | 43.46 mph (69.94 km/h) |
| 50 mph (80.47 km/h) | 48.29 mph (77.71 km/h) |
| 55 mph (88.51 km/h) | 53.12 mph (85.48 km/h) |
| 60 mph (96.56 km/h) | 57.95 mph (93.26 km/h) |
| 65 mph (104.61 km/h) | 62.77 mph (101.03 km/h) |
| 70 mph (112.65 km/h) | 67.6 mph (108.8 km/h) |
| 75 mph (120.7 km/h) | 72.43 mph (116.57 km/h) |
| 80 mph (128.75 km/h) | 77.26 mph (124.34 km/h) |
| 85 mph (136.79 km/h) | 82.09 mph (132.11 km/h) |
| 90 mph (144.84 km/h) | 86.92 mph (139.88 km/h) |
| 95 mph (152.89 km/h) | 91.75 mph (147.65 km/h) |
| 100 mph (160.93 km/h) | 96.58 mph (155.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
