Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 28/9-15 | 29/12.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.98 (710.76) | 29.02 (737.16) | 1.04 (26.4) 3.7% |
| Width inches (mm) | 9.02 (229) | 12.52 (318) | 3.5 (89) 38.9% |
| Circum. inches (mm) | 87.91 (2232.92) | 91.18 (2315.86) | 3.27 (82.94) 3.7% |
| Sidewall Height inches (mm) | 6.49 (164.88) | 7.01 (178.08) | 0.52 (13.2) 8% |
| Revolutions per mile (km) | 720.74 (447.84) | 694.92 (431.8) | -25.81 (-16.04) -3.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.74 mph (33.38 km/h) |
| 25 mph (40.23 km/h) | 25.93 mph (41.73 km/h) |
| 30 mph (48.28 km/h) | 31.11 mph (50.07 km/h) |
| 35 mph (56.33 km/h) | 36.3 mph (58.42 km/h) |
| 40 mph (64.37 km/h) | 41.49 mph (66.76 km/h) |
| 45 mph (72.42 km/h) | 46.67 mph (75.11 km/h) |
| 50 mph (80.47 km/h) | 51.86 mph (83.46 km/h) |
| 55 mph (88.51 km/h) | 57.04 mph (91.8 km/h) |
| 60 mph (96.56 km/h) | 62.23 mph (100.15 km/h) |
| 65 mph (104.61 km/h) | 67.41 mph (108.49 km/h) |
| 70 mph (112.65 km/h) | 72.6 mph (116.84 km/h) |
| 75 mph (120.7 km/h) | 77.79 mph (125.18 km/h) |
| 80 mph (128.75 km/h) | 82.97 mph (133.53 km/h) |
| 85 mph (136.79 km/h) | 88.16 mph (141.88 km/h) |
| 90 mph (144.84 km/h) | 93.34 mph (150.22 km/h) |
| 95 mph (152.89 km/h) | 98.53 mph (158.57 km/h) |
| 100 mph (160.93 km/h) | 103.71 mph (166.91 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1768 | 2054 | 2212 | 2310 | 2416 | 2491 | 2574 | 2671 | 2807 | 2942 | 3093 | 3213 | 3432 | 3672 | 3860 | 3981 | 4049 | 4297 | 4643 | 5396 |
Better Fuel Economy Factory Ratios Increased Power
