Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/75-15 | 32/12.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.24 (793.5) | 32.03 (813.48) | 0.79 (19.98) 2.5% |
| Width inches (mm) | 10.83 (275) | 12.52 (318) | 1.69 (43) 15.6% |
| Circum. inches (mm) | 98.14 (2492.85) | 100.62 (2555.62) | 2.47 (62.77) 2.5% |
| Sidewall Height inches (mm) | 8.12 (206.25) | 8.51 (216.24) | 0.39 (9.99) 4.8% |
| Revolutions per mile (km) | 645.58 (401.15) | 629.73 (391.29) | -15.86 (-9.85) -2.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.5 mph (33 km/h) |
| 25 mph (40.23 km/h) | 25.63 mph (41.25 km/h) |
| 30 mph (48.28 km/h) | 30.76 mph (49.5 km/h) |
| 35 mph (56.33 km/h) | 35.88 mph (57.75 km/h) |
| 40 mph (64.37 km/h) | 41.01 mph (65.99 km/h) |
| 45 mph (72.42 km/h) | 46.13 mph (74.24 km/h) |
| 50 mph (80.47 km/h) | 51.26 mph (82.49 km/h) |
| 55 mph (88.51 km/h) | 56.38 mph (90.74 km/h) |
| 60 mph (96.56 km/h) | 61.51 mph (98.99 km/h) |
| 65 mph (104.61 km/h) | 66.64 mph (107.24 km/h) |
| 70 mph (112.65 km/h) | 71.76 mph (115.49 km/h) |
| 75 mph (120.7 km/h) | 76.89 mph (123.74 km/h) |
| 80 mph (128.75 km/h) | 82.01 mph (131.99 km/h) |
| 85 mph (136.79 km/h) | 87.14 mph (140.24 km/h) |
| 90 mph (144.84 km/h) | 92.27 mph (148.49 km/h) |
| 95 mph (152.89 km/h) | 97.39 mph (156.74 km/h) |
| 100 mph (160.93 km/h) | 102.52 mph (164.99 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1603 | 1862 | 2005 | 2094 | 2189 | 2257 | 2332 | 2421 | 2544 | 2666 | 2803 | 2912 | 3110 | 3328 | 3498 | 3607 | 3669 | 3894 | 4208 | 4889 |
Better Fuel Economy Factory Ratios Increased Power
