Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/25-20 | 255/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.81 (655.5) | 29.04 (737.5) | 3.23 (82) 12.5% |
| Width inches (mm) | 11.61 (295) | 10.04 (255) | -1.57 (-40) -13.6% |
| Circum. inches (mm) | 81.08 (2059.31) | 91.22 (2316.92) | 10.14 (257.61) 12.5% |
| Sidewall Height inches (mm) | 2.9 (73.75) | 4.52 (114.75) | 1.61 (41) 55.6% |
| Revolutions per mile (km) | 781.5 (485.6) | 694.6 (431.61) | -86.89 (-53.99) -11.1% |
255/45-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.5 mph (36.21 km/h) |
| 25 mph (40.23 km/h) | 28.13 mph (45.27 km/h) |
| 30 mph (48.28 km/h) | 33.75 mph (54.32 km/h) |
| 35 mph (56.33 km/h) | 39.38 mph (63.37 km/h) |
| 40 mph (64.37 km/h) | 45 mph (72.43 km/h) |
| 45 mph (72.42 km/h) | 50.63 mph (81.48 km/h) |
| 50 mph (80.47 km/h) | 56.25 mph (90.53 km/h) |
| 55 mph (88.51 km/h) | 61.88 mph (99.59 km/h) |
| 60 mph (96.56 km/h) | 67.51 mph (108.64 km/h) |
| 65 mph (104.61 km/h) | 73.13 mph (117.69 km/h) |
| 70 mph (112.65 km/h) | 78.76 mph (126.75 km/h) |
| 75 mph (120.7 km/h) | 84.38 mph (135.8 km/h) |
| 80 mph (128.75 km/h) | 90.01 mph (144.85 km/h) |
| 85 mph (136.79 km/h) | 95.63 mph (153.91 km/h) |
| 90 mph (144.84 km/h) | 101.26 mph (162.96 km/h) |
| 95 mph (152.89 km/h) | 106.88 mph (172.01 km/h) |
| 100 mph (160.93 km/h) | 112.51 mph (181.07 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1768 | 2053 | 2211 | 2309 | 2415 | 2490 | 2572 | 2670 | 2806 | 2941 | 3091 | 3212 | 3430 | 3671 | 3859 | 3979 | 4047 | 4295 | 4641 | 5393 |
Better Fuel Economy Factory Ratios Increased Power
