Accepts P-Metric and Inches
275/40-21 | 245/60-18 | Difference | |
---|---|---|---|
Diameter inches (mm) | 29.66 (753.4) | 29.57 (751.2) | -0.09 (-2.2) -0.3% |
Width inches (mm) | 10.83 (275) | 9.65 (245) | -1.18 (-30) -10.9% |
Circum. inches (mm) | 93.18 (2366.88) | 92.91 (2359.96) | -0.27 (-6.91) -0.3% |
Sidewall Height inches (mm) | 4.33 (110) | 5.79 (147) | 1.46 (37) 33.6% |
Revolutions per mile (km) | 679.94 (422.5) | 681.94 (423.73) | 1.99 (1.24) 0.3% |
245/60-18 Tires
Speedometer Difference
Speedo Reading | Actual Speed |
---|---|
20 mph (32.19 km/h) | 19.94 mph (32.09 km/h) |
25 mph (40.23 km/h) | 24.93 mph (40.12 km/h) |
30 mph (48.28 km/h) | 29.91 mph (48.14 km/h) |
35 mph (56.33 km/h) | 34.9 mph (56.16 km/h) |
40 mph (64.37 km/h) | 39.88 mph (64.19 km/h) |
45 mph (72.42 km/h) | 44.87 mph (72.21 km/h) |
50 mph (80.47 km/h) | 49.85 mph (80.23 km/h) |
55 mph (88.51 km/h) | 54.84 mph (88.26 km/h) |
60 mph (96.56 km/h) | 59.82 mph (96.28 km/h) |
65 mph (104.61 km/h) | 64.81 mph (104.3 km/h) |
70 mph (112.65 km/h) | 69.8 mph (112.33 km/h) |
75 mph (120.7 km/h) | 74.78 mph (120.35 km/h) |
80 mph (128.75 km/h) | 79.77 mph (128.37 km/h) |
85 mph (136.79 km/h) | 84.75 mph (136.4 km/h) |
90 mph (144.84 km/h) | 89.74 mph (144.42 km/h) |
95 mph (152.89 km/h) | 94.72 mph (152.44 km/h) |
100 mph (160.93 km/h) | 99.71 mph (160.46 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1735 | 2016 | 2171 | 2267 | 2370 | 2444 | 2526 | 2622 | 2754 | 2887 | 3035 | 3153 | 3367 | 3604 | 3788 | 3906 | 3973 | 4217 | 4556 | 5295 |
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