Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 30/9.5-15 | 215/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.99 (761.78) | 27.7 (703.5) | -2.29 (-58.28) -7.7% |
| Width inches (mm) | 9.49 (241) | 8.46 (215) | -1.02 (-26) -10.8% |
| Circum. inches (mm) | 94.22 (2393.2) | 87.01 (2210.11) | -7.21 (-183.09) -7.7% |
| Sidewall Height inches (mm) | 7.5 (190.39) | 6.35 (161.25) | -1.15 (-29.14) -15.3% |
| Revolutions per mile (km) | 672.46 (417.85) | 728.17 (452.47) | 55.71 (34.62) 8.3% |
215/75-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.47 mph (29.72 km/h) |
| 25 mph (40.23 km/h) | 23.09 mph (37.16 km/h) |
| 30 mph (48.28 km/h) | 27.7 mph (44.59 km/h) |
| 35 mph (56.33 km/h) | 32.32 mph (52.02 km/h) |
| 40 mph (64.37 km/h) | 36.94 mph (59.45 km/h) |
| 45 mph (72.42 km/h) | 41.56 mph (66.88 km/h) |
| 50 mph (80.47 km/h) | 46.17 mph (74.31 km/h) |
| 55 mph (88.51 km/h) | 50.79 mph (81.74 km/h) |
| 60 mph (96.56 km/h) | 55.41 mph (89.17 km/h) |
| 65 mph (104.61 km/h) | 60.03 mph (96.6 km/h) |
| 70 mph (112.65 km/h) | 64.64 mph (104.04 km/h) |
| 75 mph (120.7 km/h) | 69.26 mph (111.47 km/h) |
| 80 mph (128.75 km/h) | 73.88 mph (118.9 km/h) |
| 85 mph (136.79 km/h) | 78.5 mph (126.33 km/h) |
| 90 mph (144.84 km/h) | 83.11 mph (133.76 km/h) |
| 95 mph (152.89 km/h) | 87.73 mph (141.19 km/h) |
| 100 mph (160.93 km/h) | 92.35 mph (148.62 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1853 | 2153 | 2318 | 2421 | 2531 | 2610 | 2697 | 2799 | 2941 | 3083 | 3241 | 3367 | 3596 | 3848 | 4045 | 4171 | 4242 | 4503 | 4865 | 5654 |
Better Fuel Economy Factory Ratios Increased Power
