Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/25-20 | 245/33-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.61 (650.5) | 26.37 (669.7) | 0.76 (19.2) 3% |
| Width inches (mm) | 11.22 (285) | 9.65 (245) | -1.57 (-40) -14% |
| Circum. inches (mm) | 80.46 (2043.61) | 82.83 (2103.92) | 2.37 (60.32) 3% |
| Sidewall Height inches (mm) | 2.81 (71.25) | 3.18 (80.85) | 0.38 (9.6) 13.5% |
| Revolutions per mile (km) | 787.5 (489.33) | 764.92 (475.3) | -22.58 (-14.03) -2.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.59 mph (33.14 km/h) |
| 25 mph (40.23 km/h) | 25.74 mph (41.42 km/h) |
| 30 mph (48.28 km/h) | 30.89 mph (49.71 km/h) |
| 35 mph (56.33 km/h) | 36.03 mph (57.99 km/h) |
| 40 mph (64.37 km/h) | 41.18 mph (66.27 km/h) |
| 45 mph (72.42 km/h) | 46.33 mph (74.56 km/h) |
| 50 mph (80.47 km/h) | 51.48 mph (82.84 km/h) |
| 55 mph (88.51 km/h) | 56.62 mph (91.13 km/h) |
| 60 mph (96.56 km/h) | 61.77 mph (99.41 km/h) |
| 65 mph (104.61 km/h) | 66.92 mph (107.7 km/h) |
| 70 mph (112.65 km/h) | 72.07 mph (115.98 km/h) |
| 75 mph (120.7 km/h) | 77.21 mph (124.26 km/h) |
| 80 mph (128.75 km/h) | 82.36 mph (132.55 km/h) |
| 85 mph (136.79 km/h) | 87.51 mph (140.83 km/h) |
| 90 mph (144.84 km/h) | 92.66 mph (149.12 km/h) |
| 95 mph (152.89 km/h) | 97.8 mph (157.4 km/h) |
| 100 mph (160.93 km/h) | 102.95 mph (165.68 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1947 | 2261 | 2435 | 2543 | 2659 | 2742 | 2833 | 2941 | 3090 | 3239 | 3404 | 3537 | 3777 | 4042 | 4249 | 4382 | 4456 | 4730 | 5111 | 5939 |
Better Fuel Economy Factory Ratios Increased Power
