Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/55-15 | 135/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.71 (551.5) | 23.5 (597) | 1.79 (45.5) 8.3% |
| Width inches (mm) | 6.1 (155) | 5.31 (135) | -0.79 (-20) -12.9% |
| Circum. inches (mm) | 68.21 (1732.59) | 73.84 (1875.53) | 5.63 (142.94) 8.3% |
| Sidewall Height inches (mm) | 3.36 (85.25) | 4.25 (108) | 0.9 (22.75) 26.7% |
| Revolutions per mile (km) | 928.87 (577.17) | 858.07 (533.18) | -70.79 (-43.99) -7.6% |
135/80-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.65 mph (34.84 km/h) |
| 25 mph (40.23 km/h) | 27.06 mph (43.55 km/h) |
| 30 mph (48.28 km/h) | 32.48 mph (52.26 km/h) |
| 35 mph (56.33 km/h) | 37.89 mph (60.97 km/h) |
| 40 mph (64.37 km/h) | 43.3 mph (69.68 km/h) |
| 45 mph (72.42 km/h) | 48.71 mph (78.4 km/h) |
| 50 mph (80.47 km/h) | 54.13 mph (87.11 km/h) |
| 55 mph (88.51 km/h) | 59.54 mph (95.82 km/h) |
| 60 mph (96.56 km/h) | 64.95 mph (104.53 km/h) |
| 65 mph (104.61 km/h) | 70.36 mph (113.24 km/h) |
| 70 mph (112.65 km/h) | 75.78 mph (121.95 km/h) |
| 75 mph (120.7 km/h) | 81.19 mph (130.66 km/h) |
| 80 mph (128.75 km/h) | 86.6 mph (139.37 km/h) |
| 85 mph (136.79 km/h) | 92.01 mph (148.08 km/h) |
| 90 mph (144.84 km/h) | 97.43 mph (156.79 km/h) |
| 95 mph (152.89 km/h) | 102.84 mph (165.5 km/h) |
| 100 mph (160.93 km/h) | 108.25 mph (174.21 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2184 | 2537 | 2732 | 2853 | 2983 | 3076 | 3178 | 3299 | 3466 | 3633 | 3819 | 3968 | 4237 | 4535 | 4767 | 4915 | 4999 | 5306 | 5733 | 6662 |
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