Accepts P-Metric and Inches
235/45-21 | 155/85-18 | Difference | |
---|---|---|---|
Diameter inches (mm) | 29.33 (744.9) | 28.37 (720.7) | -0.95 (-24.2) -3.2% |
Width inches (mm) | 9.25 (235) | 6.1 (155) | -3.15 (-80) -34% |
Circum. inches (mm) | 92.13 (2340.17) | 89.14 (2264.15) | -2.99 (-76.03) -3.2% |
Sidewall Height inches (mm) | 4.16 (105.75) | 5.19 (131.75) | 1.02 (26) 24.6% |
Revolutions per mile (km) | 687.7 (427.32) | 710.8 (441.67) | 23.09 (14.35) 3.4% |
155/85-18 Tires
Speedometer Difference
Speedo Reading | Actual Speed |
---|---|
20 mph (32.19 km/h) | 19.35 mph (31.14 km/h) |
25 mph (40.23 km/h) | 24.19 mph (38.93 km/h) |
30 mph (48.28 km/h) | 29.03 mph (46.71 km/h) |
35 mph (56.33 km/h) | 33.86 mph (54.5 km/h) |
40 mph (64.37 km/h) | 38.7 mph (62.28 km/h) |
45 mph (72.42 km/h) | 43.54 mph (70.07 km/h) |
50 mph (80.47 km/h) | 48.38 mph (77.85 km/h) |
55 mph (88.51 km/h) | 53.21 mph (85.64 km/h) |
60 mph (96.56 km/h) | 58.05 mph (93.42 km/h) |
65 mph (104.61 km/h) | 62.89 mph (101.21 km/h) |
70 mph (112.65 km/h) | 67.73 mph (108.99 km/h) |
75 mph (120.7 km/h) | 72.56 mph (116.78 km/h) |
80 mph (128.75 km/h) | 77.4 mph (124.57 km/h) |
85 mph (136.79 km/h) | 82.24 mph (132.35 km/h) |
90 mph (144.84 km/h) | 87.08 mph (140.14 km/h) |
95 mph (152.89 km/h) | 91.91 mph (147.92 km/h) |
100 mph (160.93 km/h) | 96.75 mph (155.71 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1809 | 2101 | 2263 | 2363 | 2471 | 2548 | 2632 | 2733 | 2871 | 3010 | 3164 | 3287 | 3510 | 3756 | 3949 | 4072 | 4141 | 4395 | 4749 | 5519 |
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