Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-18 | 175/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.54 (674.2) | 27.65 (702.2) | 1.1 (28) 4.2% |
| Width inches (mm) | 6.1 (155) | 6.89 (175) | 0.79 (20) 12.9% |
| Circum. inches (mm) | 83.39 (2118.06) | 86.85 (2206.03) | 3.46 (87.96) 4.2% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 4.82 (122.5) | 0.55 (14) 12.9% |
| Revolutions per mile (km) | 759.82 (472.13) | 729.52 (453.3) | -30.3 (-18.83) -4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.83 mph (33.52 km/h) |
| 25 mph (40.23 km/h) | 26.04 mph (41.9 km/h) |
| 30 mph (48.28 km/h) | 31.25 mph (50.29 km/h) |
| 35 mph (56.33 km/h) | 36.45 mph (58.67 km/h) |
| 40 mph (64.37 km/h) | 41.66 mph (67.05 km/h) |
| 45 mph (72.42 km/h) | 46.87 mph (75.43 km/h) |
| 50 mph (80.47 km/h) | 52.08 mph (83.81 km/h) |
| 55 mph (88.51 km/h) | 57.28 mph (92.19 km/h) |
| 60 mph (96.56 km/h) | 62.49 mph (100.57 km/h) |
| 65 mph (104.61 km/h) | 67.7 mph (108.95 km/h) |
| 70 mph (112.65 km/h) | 72.91 mph (117.33 km/h) |
| 75 mph (120.7 km/h) | 78.11 mph (125.71 km/h) |
| 80 mph (128.75 km/h) | 83.32 mph (134.09 km/h) |
| 85 mph (136.79 km/h) | 88.53 mph (142.48 km/h) |
| 90 mph (144.84 km/h) | 93.74 mph (150.86 km/h) |
| 95 mph (152.89 km/h) | 98.95 mph (159.24 km/h) |
| 100 mph (160.93 km/h) | 104.15 mph (167.62 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1856 | 2157 | 2323 | 2425 | 2536 | 2615 | 2702 | 2804 | 2947 | 3089 | 3247 | 3373 | 3602 | 3855 | 4053 | 4179 | 4250 | 4511 | 4874 | 5664 |
Better Fuel Economy Factory Ratios Increased Power
