Accepts P-Metric and Inches
315/55-20 | 325/55-20 | Difference | |
---|---|---|---|
Diameter inches (mm) | 33.64 (854.5) | 34.07 (865.5) | 0.43 (11) 1.3% |
Width inches (mm) | 12.4 (315) | 12.8 (325) | 0.39 (10) 3.2% |
Circum. inches (mm) | 105.69 (2684.49) | 107.05 (2719.05) | 1.36 (34.56) 1.3% |
Sidewall Height inches (mm) | 6.82 (173.25) | 7.04 (178.75) | 0.22 (5.5) 3.2% |
Revolutions per mile (km) | 599.5 (372.51) | 591.88 (367.78) | -7.62 (-4.73) -1.3% |
Speedometer Difference
Speedo Reading | Actual Speed |
---|---|
20 mph (32.19 km/h) | 20.26 mph (32.6 km/h) |
25 mph (40.23 km/h) | 25.32 mph (40.75 km/h) |
30 mph (48.28 km/h) | 30.39 mph (48.9 km/h) |
35 mph (56.33 km/h) | 35.45 mph (57.05 km/h) |
40 mph (64.37 km/h) | 40.51 mph (65.2 km/h) |
45 mph (72.42 km/h) | 45.58 mph (73.35 km/h) |
50 mph (80.47 km/h) | 50.64 mph (81.5 km/h) |
55 mph (88.51 km/h) | 55.71 mph (89.65 km/h) |
60 mph (96.56 km/h) | 60.77 mph (97.8 km/h) |
65 mph (104.61 km/h) | 65.84 mph (105.95 km/h) |
70 mph (112.65 km/h) | 70.9 mph (114.1 km/h) |
75 mph (120.7 km/h) | 75.97 mph (122.25 km/h) |
80 mph (128.75 km/h) | 81.03 mph (130.41 km/h) |
85 mph (136.79 km/h) | 86.09 mph (138.56 km/h) |
90 mph (144.84 km/h) | 91.16 mph (146.71 km/h) |
95 mph (152.89 km/h) | 96.22 mph (154.86 km/h) |
100 mph (160.93 km/h) | 101.29 mph (163.01 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1506 | 1750 | 1884 | 1968 | 2057 | 2122 | 2192 | 2275 | 2391 | 2506 | 2634 | 2737 | 2923 | 3128 | 3288 | 3391 | 3448 | 3660 | 3955 | 4596 |
Better Fuel Economy Factory Ratios Increased Power