Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/60-21 | 160/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.14 (689.4) | 25.82 (655.8) | -1.32 (-33.6) -4.9% |
| Width inches (mm) | 5.12 (130) | 6.3 (160) | 1.18 (30) 23.1% |
| Circum. inches (mm) | 85.27 (2165.81) | 81.11 (2060.26) | -4.16 (-105.56) -4.9% |
| Sidewall Height inches (mm) | 3.07 (78) | 4.41 (112) | 1.34 (34) 43.6% |
| Revolutions per mile (km) | 743.07 (461.72) | 781.14 (485.38) | 38.07 (23.66) 5.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.03 mph (30.62 km/h) |
| 25 mph (40.23 km/h) | 23.78 mph (38.27 km/h) |
| 30 mph (48.28 km/h) | 28.54 mph (45.93 km/h) |
| 35 mph (56.33 km/h) | 33.29 mph (53.58 km/h) |
| 40 mph (64.37 km/h) | 38.05 mph (61.24 km/h) |
| 45 mph (72.42 km/h) | 42.81 mph (68.89 km/h) |
| 50 mph (80.47 km/h) | 47.56 mph (76.55 km/h) |
| 55 mph (88.51 km/h) | 52.32 mph (84.2 km/h) |
| 60 mph (96.56 km/h) | 57.08 mph (91.85 km/h) |
| 65 mph (104.61 km/h) | 61.83 mph (99.51 km/h) |
| 70 mph (112.65 km/h) | 66.59 mph (107.16 km/h) |
| 75 mph (120.7 km/h) | 71.34 mph (114.82 km/h) |
| 80 mph (128.75 km/h) | 76.1 mph (122.47 km/h) |
| 85 mph (136.79 km/h) | 80.86 mph (130.13 km/h) |
| 90 mph (144.84 km/h) | 85.61 mph (137.78 km/h) |
| 95 mph (152.89 km/h) | 90.37 mph (145.44 km/h) |
| 100 mph (160.93 km/h) | 95.13 mph (153.09 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1988 | 2309 | 2487 | 2597 | 2715 | 2800 | 2893 | 3003 | 3155 | 3307 | 3477 | 3612 | 3857 | 4128 | 4339 | 4475 | 4551 | 4830 | 5219 | 6065 |
Better Fuel Economy Factory Ratios Increased Power
