Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-15 | 255/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.85 (555) | 29.06 (738) | 7.2 (183) 33% |
| Width inches (mm) | 5.71 (145) | 10.04 (255) | 4.33 (110) 75.9% |
| Circum. inches (mm) | 68.65 (1743.58) | 91.28 (2318.5) | 22.63 (574.91) 33% |
| Sidewall Height inches (mm) | 3.43 (87) | 7.03 (178.5) | 3.6 (91.5) 105.2% |
| Revolutions per mile (km) | 923.01 (573.53) | 694.13 (431.31) | -228.88 (-142.22) -24.8% |
255/70-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.59 mph (42.8 km/h) |
| 25 mph (40.23 km/h) | 33.24 mph (53.5 km/h) |
| 30 mph (48.28 km/h) | 39.89 mph (64.2 km/h) |
| 35 mph (56.33 km/h) | 46.54 mph (74.9 km/h) |
| 40 mph (64.37 km/h) | 53.19 mph (85.6 km/h) |
| 45 mph (72.42 km/h) | 59.84 mph (96.3 km/h) |
| 50 mph (80.47 km/h) | 66.49 mph (107 km/h) |
| 55 mph (88.51 km/h) | 73.14 mph (117.7 km/h) |
| 60 mph (96.56 km/h) | 79.78 mph (128.4 km/h) |
| 65 mph (104.61 km/h) | 86.43 mph (139.1 km/h) |
| 70 mph (112.65 km/h) | 93.08 mph (149.8 km/h) |
| 75 mph (120.7 km/h) | 99.73 mph (160.5 km/h) |
| 80 mph (128.75 km/h) | 106.38 mph (171.2 km/h) |
| 85 mph (136.79 km/h) | 113.03 mph (181.9 km/h) |
| 90 mph (144.84 km/h) | 119.68 mph (192.6 km/h) |
| 95 mph (152.89 km/h) | 126.32 mph (203.3 km/h) |
| 100 mph (160.93 km/h) | 132.97 mph (214 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1766 | 2052 | 2210 | 2308 | 2413 | 2488 | 2571 | 2668 | 2804 | 2939 | 3089 | 3210 | 3428 | 3668 | 3856 | 3976 | 4044 | 4292 | 4638 | 5390 |
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