Accepts P-Metric and Inches
275/65-18 | 255/70-18 | Difference | |
---|---|---|---|
Diameter inches (mm) | 32.07 (814.7) | 32.06 (814.2) | -0.02 (-0.5) -0.1% |
Width inches (mm) | 10.83 (275) | 10.04 (255) | -0.79 (-20) -7.3% |
Circum. inches (mm) | 100.77 (2559.46) | 100.7 (2557.88) | -0.06 (-1.57) -0.1% |
Sidewall Height inches (mm) | 7.04 (178.75) | 7.03 (178.5) | -0.01 (-0.25) -0.1% |
Revolutions per mile (km) | 628.78 (390.71) | 629.17 (390.95) | 0.39 (0.24) 0.1% |
255/70-18 Tires
Speedometer Difference
Speedo Reading | Actual Speed |
---|---|
20 mph (32.19 km/h) | 19.99 mph (32.17 km/h) |
25 mph (40.23 km/h) | 24.98 mph (40.21 km/h) |
30 mph (48.28 km/h) | 29.98 mph (48.25 km/h) |
35 mph (56.33 km/h) | 34.98 mph (56.29 km/h) |
40 mph (64.37 km/h) | 39.98 mph (64.33 km/h) |
45 mph (72.42 km/h) | 44.97 mph (72.38 km/h) |
50 mph (80.47 km/h) | 49.97 mph (80.42 km/h) |
55 mph (88.51 km/h) | 54.97 mph (88.46 km/h) |
60 mph (96.56 km/h) | 59.96 mph (96.5 km/h) |
65 mph (104.61 km/h) | 64.96 mph (104.54 km/h) |
70 mph (112.65 km/h) | 69.96 mph (112.59 km/h) |
75 mph (120.7 km/h) | 74.95 mph (120.63 km/h) |
80 mph (128.75 km/h) | 79.95 mph (128.67 km/h) |
85 mph (136.79 km/h) | 84.95 mph (136.71 km/h) |
90 mph (144.84 km/h) | 89.94 mph (144.75 km/h) |
95 mph (152.89 km/h) | 94.94 mph (152.79 km/h) |
100 mph (160.93 km/h) | 99.94 mph (160.84 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1601 | 1860 | 2003 | 2092 | 2187 | 2255 | 2330 | 2419 | 2541 | 2664 | 2800 | 2909 | 3107 | 3325 | 3495 | 3604 | 3666 | 3890 | 4204 | 4885 |
Better Fuel Economy Factory Ratios Increased Power