Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/75-17 | 30.5/10.5-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.7 (754.3) | 30.46 (773.56) | 0.76 (19.26) 2.6% |
| Width inches (mm) | 8.46 (215) | 10.51 (267) | 2.05 (52) 24.2% |
| Circum. inches (mm) | 93.3 (2369.7) | 95.68 (2430.21) | 2.38 (60.51) 2.6% |
| Sidewall Height inches (mm) | 6.35 (161.25) | 6.73 (170.88) | 0.38 (9.63) 6% |
| Revolutions per mile (km) | 679.13 (421.99) | 662.22 (411.49) | -16.91 (-10.51) -2.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.51 mph (33.01 km/h) |
| 25 mph (40.23 km/h) | 25.64 mph (41.26 km/h) |
| 30 mph (48.28 km/h) | 30.77 mph (49.51 km/h) |
| 35 mph (56.33 km/h) | 35.89 mph (57.77 km/h) |
| 40 mph (64.37 km/h) | 41.02 mph (66.02 km/h) |
| 45 mph (72.42 km/h) | 46.15 mph (74.27 km/h) |
| 50 mph (80.47 km/h) | 51.28 mph (82.52 km/h) |
| 55 mph (88.51 km/h) | 56.4 mph (90.77 km/h) |
| 60 mph (96.56 km/h) | 61.53 mph (99.03 km/h) |
| 65 mph (104.61 km/h) | 66.66 mph (107.28 km/h) |
| 70 mph (112.65 km/h) | 71.79 mph (115.53 km/h) |
| 75 mph (120.7 km/h) | 76.92 mph (123.78 km/h) |
| 80 mph (128.75 km/h) | 82.04 mph (132.04 km/h) |
| 85 mph (136.79 km/h) | 87.17 mph (140.29 km/h) |
| 90 mph (144.84 km/h) | 92.3 mph (148.54 km/h) |
| 95 mph (152.89 km/h) | 97.43 mph (156.79 km/h) |
| 100 mph (160.93 km/h) | 102.55 mph (165.04 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1685 | 1958 | 2108 | 2202 | 2302 | 2374 | 2453 | 2546 | 2675 | 2804 | 2947 | 3062 | 3270 | 3500 | 3679 | 3794 | 3858 | 4095 | 4425 | 5142 |
Better Fuel Economy Factory Ratios Increased Power
