Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/90-15 | 165/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.86 (606) | 26.09 (662.8) | 2.24 (56.8) 9.4% |
| Width inches (mm) | 4.92 (125) | 6.5 (165) | 1.57 (40) 32% |
| Circum. inches (mm) | 74.95 (1903.81) | 81.98 (2082.25) | 7.03 (178.44) 9.4% |
| Sidewall Height inches (mm) | 4.43 (112.5) | 4.55 (115.5) | 0.12 (3) 2.7% |
| Revolutions per mile (km) | 845.33 (525.26) | 772.89 (480.25) | -72.44 (-45.01) -8.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.87 mph (35.2 km/h) |
| 25 mph (40.23 km/h) | 27.34 mph (44 km/h) |
| 30 mph (48.28 km/h) | 32.81 mph (52.81 km/h) |
| 35 mph (56.33 km/h) | 38.28 mph (61.61 km/h) |
| 40 mph (64.37 km/h) | 43.75 mph (70.41 km/h) |
| 45 mph (72.42 km/h) | 49.22 mph (79.21 km/h) |
| 50 mph (80.47 km/h) | 54.69 mph (88.01 km/h) |
| 55 mph (88.51 km/h) | 60.16 mph (96.81 km/h) |
| 60 mph (96.56 km/h) | 65.62 mph (105.61 km/h) |
| 65 mph (104.61 km/h) | 71.09 mph (114.41 km/h) |
| 70 mph (112.65 km/h) | 76.56 mph (123.21 km/h) |
| 75 mph (120.7 km/h) | 82.03 mph (132.01 km/h) |
| 80 mph (128.75 km/h) | 87.5 mph (140.82 km/h) |
| 85 mph (136.79 km/h) | 92.97 mph (149.62 km/h) |
| 90 mph (144.84 km/h) | 98.44 mph (158.42 km/h) |
| 95 mph (152.89 km/h) | 103.9 mph (167.22 km/h) |
| 100 mph (160.93 km/h) | 109.37 mph (176.02 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1967 | 2285 | 2461 | 2569 | 2687 | 2770 | 2862 | 2971 | 3122 | 3273 | 3440 | 3574 | 3817 | 4084 | 4294 | 4428 | 4503 | 4779 | 5164 | 6001 |
Better Fuel Economy Factory Ratios Increased Power
