Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-16 | 255/45-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.09 (586.4) | 25.04 (635.9) | 1.95 (49.5) 8.4% |
| Width inches (mm) | 8.86 (225) | 10.04 (255) | 1.18 (30) 13.3% |
| Circum. inches (mm) | 72.53 (1842.23) | 78.65 (1997.74) | 6.12 (155.51) 8.4% |
| Sidewall Height inches (mm) | 3.54 (90) | 4.52 (114.75) | 0.97 (24.75) 27.5% |
| Revolutions per mile (km) | 873.58 (542.82) | 805.58 (500.56) | -68 (-42.25) -7.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.69 mph (34.9 km/h) |
| 25 mph (40.23 km/h) | 27.11 mph (43.63 km/h) |
| 30 mph (48.28 km/h) | 32.53 mph (52.36 km/h) |
| 35 mph (56.33 km/h) | 37.95 mph (61.08 km/h) |
| 40 mph (64.37 km/h) | 43.38 mph (69.81 km/h) |
| 45 mph (72.42 km/h) | 48.8 mph (78.53 km/h) |
| 50 mph (80.47 km/h) | 54.22 mph (87.26 km/h) |
| 55 mph (88.51 km/h) | 59.64 mph (95.99 km/h) |
| 60 mph (96.56 km/h) | 65.06 mph (104.71 km/h) |
| 65 mph (104.61 km/h) | 70.49 mph (113.44 km/h) |
| 70 mph (112.65 km/h) | 75.91 mph (122.16 km/h) |
| 75 mph (120.7 km/h) | 81.33 mph (130.89 km/h) |
| 80 mph (128.75 km/h) | 86.75 mph (139.62 km/h) |
| 85 mph (136.79 km/h) | 92.18 mph (148.34 km/h) |
| 90 mph (144.84 km/h) | 97.6 mph (157.07 km/h) |
| 95 mph (152.89 km/h) | 103.02 mph (165.79 km/h) |
| 100 mph (160.93 km/h) | 108.44 mph (174.52 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2050 | 2382 | 2565 | 2678 | 2800 | 2888 | 2983 | 3097 | 3254 | 3411 | 3585 | 3725 | 3978 | 4257 | 4475 | 4615 | 4693 | 4981 | 5382 | 6255 |
Better Fuel Economy Factory Ratios Increased Power
