Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/80-14 | 29/9.5-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.54 (699.6) | 28.99 (736.38) | 1.45 (36.78) 5.3% |
| Width inches (mm) | 8.46 (215) | 9.49 (241) | 1.02 (26) 12.1% |
| Circum. inches (mm) | 86.53 (2197.86) | 91.08 (2313.41) | 4.55 (115.55) 5.3% |
| Sidewall Height inches (mm) | 6.77 (172) | 7.5 (190.39) | 0.72 (18.39) 10.7% |
| Revolutions per mile (km) | 732.23 (454.99) | 695.66 (432.26) | -36.57 (-22.73) -5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.05 mph (33.88 km/h) |
| 25 mph (40.23 km/h) | 26.31 mph (42.35 km/h) |
| 30 mph (48.28 km/h) | 31.58 mph (50.82 km/h) |
| 35 mph (56.33 km/h) | 36.84 mph (59.29 km/h) |
| 40 mph (64.37 km/h) | 42.1 mph (67.76 km/h) |
| 45 mph (72.42 km/h) | 47.37 mph (76.23 km/h) |
| 50 mph (80.47 km/h) | 52.63 mph (84.7 km/h) |
| 55 mph (88.51 km/h) | 57.89 mph (93.17 km/h) |
| 60 mph (96.56 km/h) | 63.15 mph (101.64 km/h) |
| 65 mph (104.61 km/h) | 68.42 mph (110.11 km/h) |
| 70 mph (112.65 km/h) | 73.68 mph (118.58 km/h) |
| 75 mph (120.7 km/h) | 78.94 mph (127.05 km/h) |
| 80 mph (128.75 km/h) | 84.21 mph (135.52 km/h) |
| 85 mph (136.79 km/h) | 89.47 mph (143.99 km/h) |
| 90 mph (144.84 km/h) | 94.73 mph (152.46 km/h) |
| 95 mph (152.89 km/h) | 99.99 mph (160.93 km/h) |
| 100 mph (160.93 km/h) | 105.26 mph (169.4 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1770 | 2057 | 2215 | 2313 | 2418 | 2494 | 2576 | 2674 | 2810 | 2946 | 3096 | 3217 | 3435 | 3676 | 3865 | 3985 | 4053 | 4302 | 4648 | 5401 |
Better Fuel Economy Factory Ratios Increased Power
