Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/80-15 | 29/9.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.17 (741) | 29.04 (737.68) | -0.13 (-3.32) -0.4% |
| Width inches (mm) | 8.86 (225) | 9.49 (241) | 0.63 (16) 7.1% |
| Circum. inches (mm) | 91.65 (2327.92) | 91.24 (2317.49) | -0.41 (-10.43) -0.4% |
| Sidewall Height inches (mm) | 7.09 (180) | 7.02 (178.34) | -0.07 (-1.66) -0.9% |
| Revolutions per mile (km) | 691.32 (429.57) | 694.43 (431.5) | 3.11 (1.93) 0.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.91 mph (32.04 km/h) |
| 25 mph (40.23 km/h) | 24.89 mph (40.05 km/h) |
| 30 mph (48.28 km/h) | 29.87 mph (48.06 km/h) |
| 35 mph (56.33 km/h) | 34.84 mph (56.07 km/h) |
| 40 mph (64.37 km/h) | 39.82 mph (64.09 km/h) |
| 45 mph (72.42 km/h) | 44.8 mph (72.1 km/h) |
| 50 mph (80.47 km/h) | 49.78 mph (80.11 km/h) |
| 55 mph (88.51 km/h) | 54.75 mph (88.12 km/h) |
| 60 mph (96.56 km/h) | 59.73 mph (96.13 km/h) |
| 65 mph (104.61 km/h) | 64.71 mph (104.14 km/h) |
| 70 mph (112.65 km/h) | 69.69 mph (112.15 km/h) |
| 75 mph (120.7 km/h) | 74.66 mph (120.16 km/h) |
| 80 mph (128.75 km/h) | 79.64 mph (128.17 km/h) |
| 85 mph (136.79 km/h) | 84.62 mph (136.18 km/h) |
| 90 mph (144.84 km/h) | 89.6 mph (144.19 km/h) |
| 95 mph (152.89 km/h) | 94.57 mph (152.2 km/h) |
| 100 mph (160.93 km/h) | 99.55 mph (160.21 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1767 | 2053 | 2211 | 2309 | 2414 | 2489 | 2572 | 2670 | 2805 | 2940 | 3091 | 3211 | 3429 | 3670 | 3858 | 3978 | 4046 | 4294 | 4640 | 5392 |
Better Fuel Economy Factory Ratios Increased Power
