Accepts P-Metric and Inches
235/70-18 | 255/70-18 | Difference | |
---|---|---|---|
Diameter inches (mm) | 30.95 (786.2) | 32.06 (814.2) | 1.1 (28) 3.6% |
Width inches (mm) | 9.25 (235) | 10.04 (255) | 0.79 (20) 8.5% |
Circum. inches (mm) | 97.24 (2469.92) | 100.7 (2557.88) | 3.46 (87.96) 3.6% |
Sidewall Height inches (mm) | 6.48 (164.5) | 7.03 (178.5) | 0.55 (14) 8.5% |
Revolutions per mile (km) | 651.58 (404.87) | 629.17 (390.95) | -22.41 (-13.92) -3.4% |
255/70-18 Tires
Speedometer Difference
Speedo Reading | Actual Speed |
---|---|
20 mph (32.19 km/h) | 20.71 mph (33.33 km/h) |
25 mph (40.23 km/h) | 25.89 mph (41.67 km/h) |
30 mph (48.28 km/h) | 31.07 mph (50 km/h) |
35 mph (56.33 km/h) | 36.25 mph (58.33 km/h) |
40 mph (64.37 km/h) | 41.42 mph (66.67 km/h) |
45 mph (72.42 km/h) | 46.6 mph (75 km/h) |
50 mph (80.47 km/h) | 51.78 mph (83.33 km/h) |
55 mph (88.51 km/h) | 56.96 mph (91.67 km/h) |
60 mph (96.56 km/h) | 62.14 mph (100 km/h) |
65 mph (104.61 km/h) | 67.31 mph (108.33 km/h) |
70 mph (112.65 km/h) | 72.49 mph (116.67 km/h) |
75 mph (120.7 km/h) | 77.67 mph (125 km/h) |
80 mph (128.75 km/h) | 82.85 mph (133.33 km/h) |
85 mph (136.79 km/h) | 88.03 mph (141.67 km/h) |
90 mph (144.84 km/h) | 93.21 mph (150 km/h) |
95 mph (152.89 km/h) | 98.38 mph (158.33 km/h) |
100 mph (160.93 km/h) | 103.56 mph (166.67 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