Accepts P-Metric and Inches
325/60-18 | 285/70-18 | Difference | |
---|---|---|---|
Diameter inches (mm) | 33.35 (847.2) | 33.71 (856.2) | 0.35 (9) 1.1% |
Width inches (mm) | 12.8 (325) | 11.22 (285) | -1.57 (-40) -12.3% |
Circum. inches (mm) | 104.79 (2661.56) | 105.9 (2689.83) | 1.11 (28.27) 1.1% |
Sidewall Height inches (mm) | 7.68 (195) | 7.85 (199.5) | 0.18 (4.5) 2.3% |
Revolutions per mile (km) | 604.66 (375.72) | 598.31 (371.77) | -6.36 (-3.95) -1.1% |
285/70-18 Tires
Speedometer Difference
Speedo Reading | Actual Speed |
---|---|
20 mph (32.19 km/h) | 20.21 mph (32.53 km/h) |
25 mph (40.23 km/h) | 25.27 mph (40.66 km/h) |
30 mph (48.28 km/h) | 30.32 mph (48.79 km/h) |
35 mph (56.33 km/h) | 35.37 mph (56.93 km/h) |
40 mph (64.37 km/h) | 40.42 mph (65.06 km/h) |
45 mph (72.42 km/h) | 45.48 mph (73.19 km/h) |
50 mph (80.47 km/h) | 50.53 mph (81.32 km/h) |
55 mph (88.51 km/h) | 55.58 mph (89.45 km/h) |
60 mph (96.56 km/h) | 60.64 mph (97.59 km/h) |
65 mph (104.61 km/h) | 65.69 mph (105.72 km/h) |
70 mph (112.65 km/h) | 70.74 mph (113.85 km/h) |
75 mph (120.7 km/h) | 75.8 mph (121.98 km/h) |
80 mph (128.75 km/h) | 80.85 mph (130.12 km/h) |
85 mph (136.79 km/h) | 85.9 mph (138.25 km/h) |
90 mph (144.84 km/h) | 90.96 mph (146.38 km/h) |
95 mph (152.89 km/h) | 96.01 mph (154.51 km/h) |
100 mph (160.93 km/h) | 101.06 mph (162.64 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 |
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1523 | 1769 | 1905 | 1989 | 2080 | 2145 | 2216 | 2300 | 2417 | 2533 | 2663 | 2767 | 2954 | 3162 | 3324 | 3427 | 3486 | 3700 | 3998 | 4645 |
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