Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/90-15 | 245/90-17.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.57 (624) | 34.86 (885.5) | 10.3 (261.5) 41.9% |
| Width inches (mm) | 5.31 (135) | 9.65 (245) | 4.33 (110) 81.5% |
| Circum. inches (mm) | 77.18 (1960.35) | 109.52 (2781.88) | 32.34 (821.53) 41.9% |
| Sidewall Height inches (mm) | 4.78 (121.5) | 8.68 (220.5) | 3.9 (99) 81.5% |
| Revolutions per mile (km) | 820.95 (510.11) | 578.51 (359.47) | -242.44 (-150.64) -29.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 28.38 mph (45.68 km/h) |
| 25 mph (40.23 km/h) | 35.48 mph (57.09 km/h) |
| 30 mph (48.28 km/h) | 42.57 mph (68.51 km/h) |
| 35 mph (56.33 km/h) | 49.67 mph (79.93 km/h) |
| 40 mph (64.37 km/h) | 56.76 mph (91.35 km/h) |
| 45 mph (72.42 km/h) | 63.86 mph (102.77 km/h) |
| 50 mph (80.47 km/h) | 70.95 mph (114.19 km/h) |
| 55 mph (88.51 km/h) | 78.05 mph (125.61 km/h) |
| 60 mph (96.56 km/h) | 85.14 mph (137.03 km/h) |
| 65 mph (104.61 km/h) | 92.24 mph (148.45 km/h) |
| 70 mph (112.65 km/h) | 99.33 mph (159.86 km/h) |
| 75 mph (120.7 km/h) | 106.43 mph (171.28 km/h) |
| 80 mph (128.75 km/h) | 113.53 mph (182.7 km/h) |
| 85 mph (136.79 km/h) | 120.62 mph (194.12 km/h) |
| 90 mph (144.84 km/h) | 127.72 mph (205.54 km/h) |
| 95 mph (152.89 km/h) | 134.81 mph (216.96 km/h) |
| 100 mph (160.93 km/h) | 141.91 mph (228.38 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
