Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/90-15 | 135/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.57 (624) | 23.5 (597) | -1.06 (-27) -4.3% |
| Width inches (mm) | 5.31 (135) | 5.31 (135) | 0 (0) 0% |
| Circum. inches (mm) | 77.18 (1960.35) | 73.84 (1875.53) | -3.34 (-84.82) -4.3% |
| Sidewall Height inches (mm) | 4.78 (121.5) | 4.25 (108) | -0.53 (-13.5) -11.1% |
| Revolutions per mile (km) | 820.95 (510.11) | 858.07 (533.18) | 37.13 (23.07) 4.5% |
135/80-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.13 mph (30.79 km/h) |
| 25 mph (40.23 km/h) | 23.92 mph (38.49 km/h) |
| 30 mph (48.28 km/h) | 28.7 mph (46.19 km/h) |
| 35 mph (56.33 km/h) | 33.49 mph (53.89 km/h) |
| 40 mph (64.37 km/h) | 38.27 mph (61.59 km/h) |
| 45 mph (72.42 km/h) | 43.05 mph (69.29 km/h) |
| 50 mph (80.47 km/h) | 47.84 mph (76.99 km/h) |
| 55 mph (88.51 km/h) | 52.62 mph (84.68 km/h) |
| 60 mph (96.56 km/h) | 57.4 mph (92.38 km/h) |
| 65 mph (104.61 km/h) | 62.19 mph (100.08 km/h) |
| 70 mph (112.65 km/h) | 66.97 mph (107.78 km/h) |
| 75 mph (120.7 km/h) | 71.75 mph (115.48 km/h) |
| 80 mph (128.75 km/h) | 76.54 mph (123.18 km/h) |
| 85 mph (136.79 km/h) | 81.32 mph (130.88 km/h) |
| 90 mph (144.84 km/h) | 86.11 mph (138.57 km/h) |
| 95 mph (152.89 km/h) | 90.89 mph (146.27 km/h) |
| 100 mph (160.93 km/h) | 95.67 mph (153.97 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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