Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/80-16 | 190/70-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.71 (678.4) | 26.47 (672.4) | -0.24 (-6) -0.9% |
| Width inches (mm) | 6.69 (170) | 7.48 (190) | 0.79 (20) 11.8% |
| Circum. inches (mm) | 83.91 (2131.26) | 83.17 (2112.41) | -0.74 (-18.85) -0.9% |
| Sidewall Height inches (mm) | 5.35 (136) | 5.24 (133) | -0.12 (-3) -2.2% |
| Revolutions per mile (km) | 755.12 (469.21) | 761.85 (473.39) | 6.74 (4.19) 0.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.82 mph (31.9 km/h) |
| 25 mph (40.23 km/h) | 24.78 mph (39.88 km/h) |
| 30 mph (48.28 km/h) | 29.73 mph (47.85 km/h) |
| 35 mph (56.33 km/h) | 34.69 mph (55.83 km/h) |
| 40 mph (64.37 km/h) | 39.65 mph (63.8 km/h) |
| 45 mph (72.42 km/h) | 44.6 mph (71.78 km/h) |
| 50 mph (80.47 km/h) | 49.56 mph (79.76 km/h) |
| 55 mph (88.51 km/h) | 54.51 mph (87.73 km/h) |
| 60 mph (96.56 km/h) | 59.47 mph (95.71 km/h) |
| 65 mph (104.61 km/h) | 64.43 mph (103.68 km/h) |
| 70 mph (112.65 km/h) | 69.38 mph (111.66 km/h) |
| 75 mph (120.7 km/h) | 74.34 mph (119.63 km/h) |
| 80 mph (128.75 km/h) | 79.29 mph (127.61 km/h) |
| 85 mph (136.79 km/h) | 84.25 mph (135.58 km/h) |
| 90 mph (144.84 km/h) | 89.2 mph (143.56 km/h) |
| 95 mph (152.89 km/h) | 94.16 mph (151.54 km/h) |
| 100 mph (160.93 km/h) | 99.12 mph (159.51 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1939 | 2252 | 2426 | 2533 | 2648 | 2731 | 2822 | 2929 | 3077 | 3226 | 3391 | 3523 | 3762 | 4026 | 4232 | 4364 | 4439 | 4711 | 5090 | 5915 |
Better Fuel Economy Factory Ratios Increased Power
