Accepts P-Metric and Inches
120/80-18 | 100/100-18 | Difference | |
---|---|---|---|
Diameter inches (mm) | 25.56 (649.2) | 25.87 (657.2) | 0.31 (8) 1.2% |
Width inches (mm) | 4.72 (120) | 3.94 (100) | -0.79 (-20) -16.7% |
Circum. inches (mm) | 80.3 (2039.52) | 81.29 (2064.65) | 0.99 (25.13) 1.2% |
Sidewall Height inches (mm) | 3.78 (96) | 3.94 (100) | 0.16 (4) 4.2% |
Revolutions per mile (km) | 789.08 (490.31) | 779.47 (484.34) | -9.61 (-5.97) -1.2% |
Speedometer Difference
Speedo Reading | Actual Speed |
---|---|
20 mph (32.19 km/h) | 20.25 mph (32.58 km/h) |
25 mph (40.23 km/h) | 25.31 mph (40.73 km/h) |
30 mph (48.28 km/h) | 30.37 mph (48.88 km/h) |
35 mph (56.33 km/h) | 35.43 mph (57.02 km/h) |
40 mph (64.37 km/h) | 40.49 mph (65.17 km/h) |
45 mph (72.42 km/h) | 45.55 mph (73.31 km/h) |
50 mph (80.47 km/h) | 50.62 mph (81.46 km/h) |
55 mph (88.51 km/h) | 55.68 mph (89.6 km/h) |
60 mph (96.56 km/h) | 60.74 mph (97.75 km/h) |
65 mph (104.61 km/h) | 65.8 mph (105.9 km/h) |
70 mph (112.65 km/h) | 70.86 mph (114.04 km/h) |
75 mph (120.7 km/h) | 75.92 mph (122.19 km/h) |
80 mph (128.75 km/h) | 80.99 mph (130.33 km/h) |
85 mph (136.79 km/h) | 86.05 mph (138.48 km/h) |
90 mph (144.84 km/h) | 91.11 mph (146.63 km/h) |
95 mph (152.89 km/h) | 96.17 mph (154.77 km/h) |
100 mph (160.93 km/h) | 101.23 mph (162.92 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1984 | 2304 | 2482 | 2591 | 2710 | 2794 | 2887 | 2997 | 3148 | 3300 | 3469 | 3604 | 3849 | 4119 | 4330 | 4465 | 4541 | 4820 | 5208 | 6052 |
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