Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 29.5/10.5-15 | 32/12-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.51 (749.46) | 32.05 (814.1) | 2.54 (64.64) 8.6% |
| Width inches (mm) | 10.51 (267) | 12.01 (305) | 1.5 (38) 14.2% |
| Circum. inches (mm) | 92.7 (2354.5) | 100.69 (2557.57) | 7.99 (203.07) 8.6% |
| Sidewall Height inches (mm) | 7.25 (184.23) | 8.53 (216.55) | 1.27 (32.32) 17.5% |
| Revolutions per mile (km) | 683.52 (424.72) | 629.25 (391) | -54.27 (-33.72) -7.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.72 mph (34.96 km/h) |
| 25 mph (40.23 km/h) | 27.16 mph (43.7 km/h) |
| 30 mph (48.28 km/h) | 32.59 mph (52.44 km/h) |
| 35 mph (56.33 km/h) | 38.02 mph (61.19 km/h) |
| 40 mph (64.37 km/h) | 43.45 mph (69.93 km/h) |
| 45 mph (72.42 km/h) | 48.88 mph (78.67 km/h) |
| 50 mph (80.47 km/h) | 54.31 mph (87.41 km/h) |
| 55 mph (88.51 km/h) | 59.74 mph (96.15 km/h) |
| 60 mph (96.56 km/h) | 65.17 mph (104.89 km/h) |
| 65 mph (104.61 km/h) | 70.61 mph (113.63 km/h) |
| 70 mph (112.65 km/h) | 76.04 mph (122.37 km/h) |
| 75 mph (120.7 km/h) | 81.47 mph (131.11 km/h) |
| 80 mph (128.75 km/h) | 86.9 mph (139.85 km/h) |
| 85 mph (136.79 km/h) | 92.33 mph (148.59 km/h) |
| 90 mph (144.84 km/h) | 97.76 mph (157.33 km/h) |
| 95 mph (152.89 km/h) | 103.19 mph (166.07 km/h) |
| 100 mph (160.93 km/h) | 108.62 mph (174.82 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1601 | 1860 | 2003 | 2092 | 2187 | 2255 | 2330 | 2419 | 2542 | 2664 | 2801 | 2910 | 3107 | 3325 | 3496 | 3605 | 3666 | 3891 | 4204 | 4886 |
Better Fuel Economy Factory Ratios Increased Power
