Accepts P-Metric and Inches
28/9-15 | 255/60-15 | Difference | |
---|---|---|---|
Diameter inches (mm) | 27.98 (710.76) | 27.05 (687) | -0.94 (-23.76) -3.3% |
Width inches (mm) | 9.02 (229) | 10.04 (255) | 1.02 (26) 11.4% |
Circum. inches (mm) | 87.91 (2232.92) | 84.97 (2158.27) | -2.94 (-74.64) -3.3% |
Sidewall Height inches (mm) | 6.49 (164.88) | 6.02 (153) | -0.47 (-11.88) -7.2% |
Revolutions per mile (km) | 720.74 (447.84) | 745.66 (463.33) | 24.93 (15.49) 3.5% |
255/60-15 Tires
Speedometer Difference
Speedo Reading | Actual Speed |
---|---|
20 mph (32.19 km/h) | 19.33 mph (31.11 km/h) |
25 mph (40.23 km/h) | 24.16 mph (38.89 km/h) |
30 mph (48.28 km/h) | 29 mph (46.67 km/h) |
35 mph (56.33 km/h) | 33.83 mph (54.44 km/h) |
40 mph (64.37 km/h) | 38.66 mph (62.22 km/h) |
45 mph (72.42 km/h) | 43.5 mph (70 km/h) |
50 mph (80.47 km/h) | 48.33 mph (77.78 km/h) |
55 mph (88.51 km/h) | 53.16 mph (85.56 km/h) |
60 mph (96.56 km/h) | 57.99 mph (93.33 km/h) |
65 mph (104.61 km/h) | 62.83 mph (101.11 km/h) |
70 mph (112.65 km/h) | 67.66 mph (108.89 km/h) |
75 mph (120.7 km/h) | 72.49 mph (116.67 km/h) |
80 mph (128.75 km/h) | 77.33 mph (124.44 km/h) |
85 mph (136.79 km/h) | 82.16 mph (132.22 km/h) |
90 mph (144.84 km/h) | 86.99 mph (140 km/h) |
95 mph (152.89 km/h) | 91.82 mph (147.78 km/h) |
100 mph (160.93 km/h) | 96.66 mph (155.55 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1898 | 2204 | 2374 | 2479 | 2592 | 2673 | 2762 | 2867 | 3012 | 3157 | 3319 | 3448 | 3682 | 3940 | 4142 | 4272 | 4344 | 4611 | 4982 | 5790 |
Better Fuel Economy Factory Ratios Increased Power