Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/75-17 | 245/90-17.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.7 (754.3) | 34.86 (885.5) | 5.17 (131.2) 17.4% |
| Width inches (mm) | 8.46 (215) | 9.65 (245) | 1.18 (30) 14% |
| Circum. inches (mm) | 93.3 (2369.7) | 109.52 (2781.88) | 16.23 (412.18) 17.4% |
| Sidewall Height inches (mm) | 6.35 (161.25) | 8.68 (220.5) | 2.33 (59.25) 36.7% |
| Revolutions per mile (km) | 679.13 (421.99) | 578.51 (359.47) | -100.62 (-62.52) -14.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.48 mph (37.79 km/h) |
| 25 mph (40.23 km/h) | 29.35 mph (47.23 km/h) |
| 30 mph (48.28 km/h) | 35.22 mph (56.68 km/h) |
| 35 mph (56.33 km/h) | 41.09 mph (66.12 km/h) |
| 40 mph (64.37 km/h) | 46.96 mph (75.57 km/h) |
| 45 mph (72.42 km/h) | 52.83 mph (85.02 km/h) |
| 50 mph (80.47 km/h) | 58.7 mph (94.46 km/h) |
| 55 mph (88.51 km/h) | 64.57 mph (103.91 km/h) |
| 60 mph (96.56 km/h) | 70.44 mph (113.36 km/h) |
| 65 mph (104.61 km/h) | 76.31 mph (122.8 km/h) |
| 70 mph (112.65 km/h) | 82.18 mph (132.25 km/h) |
| 75 mph (120.7 km/h) | 88.05 mph (141.7 km/h) |
| 80 mph (128.75 km/h) | 93.91 mph (151.14 km/h) |
| 85 mph (136.79 km/h) | 99.78 mph (160.59 km/h) |
| 90 mph (144.84 km/h) | 105.65 mph (170.03 km/h) |
| 95 mph (152.89 km/h) | 111.52 mph (179.48 km/h) |
| 100 mph (160.93 km/h) | 117.39 mph (188.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1472 | 1710 | 1842 | 1923 | 2011 | 2074 | 2143 | 2224 | 2337 | 2449 | 2575 | 2675 | 2857 | 3057 | 3214 | 3314 | 3370 | 3577 | 3865 | 4492 |
Better Fuel Economy Factory Ratios Increased Power
