Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 115/70-15 | 155/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.34 (542) | 24.76 (629) | 3.43 (87) 16.1% |
| Width inches (mm) | 4.53 (115) | 6.1 (155) | 1.57 (40) 34.8% |
| Circum. inches (mm) | 67.04 (1702.74) | 77.8 (1976.06) | 10.76 (273.32) 16.1% |
| Sidewall Height inches (mm) | 3.17 (80.5) | 4.88 (124) | 1.71 (43.5) 54% |
| Revolutions per mile (km) | 945.15 (587.29) | 814.42 (506.06) | -130.73 (-81.23) -13.8% |
155/80-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.21 mph (37.35 km/h) |
| 25 mph (40.23 km/h) | 29.01 mph (46.69 km/h) |
| 30 mph (48.28 km/h) | 34.82 mph (56.03 km/h) |
| 35 mph (56.33 km/h) | 40.62 mph (65.37 km/h) |
| 40 mph (64.37 km/h) | 46.42 mph (74.71 km/h) |
| 45 mph (72.42 km/h) | 52.22 mph (84.05 km/h) |
| 50 mph (80.47 km/h) | 58.03 mph (93.38 km/h) |
| 55 mph (88.51 km/h) | 63.83 mph (102.72 km/h) |
| 60 mph (96.56 km/h) | 69.63 mph (112.06 km/h) |
| 65 mph (104.61 km/h) | 75.43 mph (121.4 km/h) |
| 70 mph (112.65 km/h) | 81.24 mph (130.74 km/h) |
| 75 mph (120.7 km/h) | 87.04 mph (140.08 km/h) |
| 80 mph (128.75 km/h) | 92.84 mph (149.41 km/h) |
| 85 mph (136.79 km/h) | 98.64 mph (158.75 km/h) |
| 90 mph (144.84 km/h) | 104.45 mph (168.09 km/h) |
| 95 mph (152.89 km/h) | 110.25 mph (177.43 km/h) |
| 100 mph (160.93 km/h) | 116.05 mph (186.77 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2073 | 2408 | 2593 | 2708 | 2831 | 2919 | 3016 | 3131 | 3290 | 3448 | 3625 | 3766 | 4022 | 4304 | 4524 | 4665 | 4745 | 5036 | 5442 | 6323 |
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