Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-15 | 165/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.44 (570) | 25.39 (645) | 2.95 (75) 13.2% |
| Width inches (mm) | 5.31 (135) | 6.5 (165) | 1.18 (30) 22.2% |
| Circum. inches (mm) | 70.5 (1790.71) | 79.78 (2026.33) | 9.28 (235.62) 13.2% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 5.2 (132) | 1.48 (37.5) 39.7% |
| Revolutions per mile (km) | 898.72 (558.44) | 794.22 (493.5) | -104.5 (-64.93) -11.6% |
165/80-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.63 mph (36.42 km/h) |
| 25 mph (40.23 km/h) | 28.29 mph (45.53 km/h) |
| 30 mph (48.28 km/h) | 33.95 mph (54.63 km/h) |
| 35 mph (56.33 km/h) | 39.61 mph (63.74 km/h) |
| 40 mph (64.37 km/h) | 45.26 mph (72.84 km/h) |
| 45 mph (72.42 km/h) | 50.92 mph (81.95 km/h) |
| 50 mph (80.47 km/h) | 56.58 mph (91.06 km/h) |
| 55 mph (88.51 km/h) | 62.24 mph (100.16 km/h) |
| 60 mph (96.56 km/h) | 67.89 mph (109.27 km/h) |
| 65 mph (104.61 km/h) | 73.55 mph (118.37 km/h) |
| 70 mph (112.65 km/h) | 79.21 mph (127.48 km/h) |
| 75 mph (120.7 km/h) | 84.87 mph (136.58 km/h) |
| 80 mph (128.75 km/h) | 90.53 mph (145.69 km/h) |
| 85 mph (136.79 km/h) | 96.18 mph (154.79 km/h) |
| 90 mph (144.84 km/h) | 101.84 mph (163.9 km/h) |
| 95 mph (152.89 km/h) | 107.5 mph (173 km/h) |
| 100 mph (160.93 km/h) | 113.16 mph (182.11 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 |
Better Fuel Economy Factory Ratios Increased Power
