Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/90-15 | 165/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.57 (624) | 25.39 (645) | 0.83 (21) 3.4% |
| Width inches (mm) | 5.31 (135) | 6.5 (165) | 1.18 (30) 22.2% |
| Circum. inches (mm) | 77.18 (1960.35) | 79.78 (2026.33) | 2.6 (65.97) 3.4% |
| Sidewall Height inches (mm) | 4.78 (121.5) | 5.2 (132) | 0.41 (10.5) 8.6% |
| Revolutions per mile (km) | 820.95 (510.11) | 794.22 (493.5) | -26.73 (-16.61) -3.3% |
165/80-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.67 mph (33.27 km/h) |
| 25 mph (40.23 km/h) | 25.84 mph (41.59 km/h) |
| 30 mph (48.28 km/h) | 31.01 mph (49.91 km/h) |
| 35 mph (56.33 km/h) | 36.18 mph (58.22 km/h) |
| 40 mph (64.37 km/h) | 41.35 mph (66.54 km/h) |
| 45 mph (72.42 km/h) | 46.51 mph (74.86 km/h) |
| 50 mph (80.47 km/h) | 51.68 mph (83.18 km/h) |
| 55 mph (88.51 km/h) | 56.85 mph (91.49 km/h) |
| 60 mph (96.56 km/h) | 62.02 mph (99.81 km/h) |
| 65 mph (104.61 km/h) | 67.19 mph (108.13 km/h) |
| 70 mph (112.65 km/h) | 72.36 mph (116.45 km/h) |
| 75 mph (120.7 km/h) | 77.52 mph (124.76 km/h) |
| 80 mph (128.75 km/h) | 82.69 mph (133.08 km/h) |
| 85 mph (136.79 km/h) | 87.86 mph (141.4 km/h) |
| 90 mph (144.84 km/h) | 93.03 mph (149.72 km/h) |
| 95 mph (152.89 km/h) | 98.2 mph (158.03 km/h) |
| 100 mph (160.93 km/h) | 103.37 mph (166.35 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | 2348 | 2529 | 2640 | 2761 | 2847 | 2941 | 3053 | 3208 | 3363 | 3535 | 3672 | 3922 | 4197 | 4412 | 4550 | 4627 | 4911 | 5307 | 6167 |
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