Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-15 | 225/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.85 (555) | 29.17 (741) | 7.32 (186) 33.5% |
| Width inches (mm) | 5.71 (145) | 8.86 (225) | 3.15 (80) 55.2% |
| Circum. inches (mm) | 68.65 (1743.58) | 91.65 (2327.92) | 23.01 (584.34) 33.5% |
| Sidewall Height inches (mm) | 3.43 (87) | 7.09 (180) | 3.66 (93) 106.9% |
| Revolutions per mile (km) | 923.01 (573.53) | 691.32 (429.57) | -231.69 (-143.96) -25.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.7 mph (42.97 km/h) |
| 25 mph (40.23 km/h) | 33.38 mph (53.72 km/h) |
| 30 mph (48.28 km/h) | 40.05 mph (64.46 km/h) |
| 35 mph (56.33 km/h) | 46.73 mph (75.2 km/h) |
| 40 mph (64.37 km/h) | 53.41 mph (85.95 km/h) |
| 45 mph (72.42 km/h) | 60.08 mph (96.69 km/h) |
| 50 mph (80.47 km/h) | 66.76 mph (107.43 km/h) |
| 55 mph (88.51 km/h) | 73.43 mph (118.18 km/h) |
| 60 mph (96.56 km/h) | 80.11 mph (128.92 km/h) |
| 65 mph (104.61 km/h) | 86.78 mph (139.67 km/h) |
| 70 mph (112.65 km/h) | 93.46 mph (150.41 km/h) |
| 75 mph (120.7 km/h) | 100.14 mph (161.15 km/h) |
| 80 mph (128.75 km/h) | 106.81 mph (171.9 km/h) |
| 85 mph (136.79 km/h) | 113.49 mph (182.64 km/h) |
| 90 mph (144.84 km/h) | 120.16 mph (193.38 km/h) |
| 95 mph (152.89 km/h) | 126.84 mph (204.13 km/h) |
| 100 mph (160.93 km/h) | 133.51 mph (214.87 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1759 | 2044 | 2201 | 2298 | 2403 | 2478 | 2560 | 2658 | 2792 | 2927 | 3077 | 3197 | 3414 | 3653 | 3840 | 3960 | 4028 | 4275 | 4619 | 5368 |
Better Fuel Economy Factory Ratios Increased Power
