Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/70-12 | 135/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.65 (549.8) | 23.5 (597) | 1.86 (47.2) 8.6% |
| Width inches (mm) | 6.89 (175) | 5.31 (135) | -1.57 (-40) -22.9% |
| Circum. inches (mm) | 68 (1727.25) | 73.84 (1875.53) | 5.84 (148.28) 8.6% |
| Sidewall Height inches (mm) | 4.82 (122.5) | 4.25 (108) | -0.57 (-14.5) -11.8% |
| Revolutions per mile (km) | 931.74 (578.95) | 858.07 (533.18) | -73.67 (-45.77) -7.9% |
135/80-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.72 mph (34.95 km/h) |
| 25 mph (40.23 km/h) | 27.15 mph (43.69 km/h) |
| 30 mph (48.28 km/h) | 32.58 mph (52.43 km/h) |
| 35 mph (56.33 km/h) | 38 mph (61.16 km/h) |
| 40 mph (64.37 km/h) | 43.43 mph (69.9 km/h) |
| 45 mph (72.42 km/h) | 48.86 mph (78.64 km/h) |
| 50 mph (80.47 km/h) | 54.29 mph (87.38 km/h) |
| 55 mph (88.51 km/h) | 59.72 mph (96.11 km/h) |
| 60 mph (96.56 km/h) | 65.15 mph (104.85 km/h) |
| 65 mph (104.61 km/h) | 70.58 mph (113.59 km/h) |
| 70 mph (112.65 km/h) | 76.01 mph (122.33 km/h) |
| 75 mph (120.7 km/h) | 81.44 mph (131.06 km/h) |
| 80 mph (128.75 km/h) | 86.87 mph (139.8 km/h) |
| 85 mph (136.79 km/h) | 92.3 mph (148.54 km/h) |
| 90 mph (144.84 km/h) | 97.73 mph (157.28 km/h) |
| 95 mph (152.89 km/h) | 103.16 mph (166.01 km/h) |
| 100 mph (160.93 km/h) | 108.58 mph (174.75 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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