Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/90-15 | 235/85-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.53 (750) | 30.73 (780.5) | 1.2 (30.5) 4.1% |
| Width inches (mm) | 8.07 (205) | 9.25 (235) | 1.18 (30) 14.6% |
| Circum. inches (mm) | 92.76 (2356.19) | 96.54 (2452.01) | 3.77 (95.82) 4.1% |
| Sidewall Height inches (mm) | 7.26 (184.5) | 7.86 (199.75) | 0.6 (15.25) 8.3% |
| Revolutions per mile (km) | 683.03 (424.41) | 656.34 (407.83) | -26.69 (-16.58) -3.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.81 mph (33.5 km/h) |
| 25 mph (40.23 km/h) | 26.02 mph (41.87 km/h) |
| 30 mph (48.28 km/h) | 31.22 mph (50.24 km/h) |
| 35 mph (56.33 km/h) | 36.42 mph (58.62 km/h) |
| 40 mph (64.37 km/h) | 41.63 mph (66.99 km/h) |
| 45 mph (72.42 km/h) | 46.83 mph (75.37 km/h) |
| 50 mph (80.47 km/h) | 52.03 mph (83.74 km/h) |
| 55 mph (88.51 km/h) | 57.24 mph (92.11 km/h) |
| 60 mph (96.56 km/h) | 62.44 mph (100.49 km/h) |
| 65 mph (104.61 km/h) | 67.64 mph (108.86 km/h) |
| 70 mph (112.65 km/h) | 72.85 mph (117.24 km/h) |
| 75 mph (120.7 km/h) | 78.05 mph (125.61 km/h) |
| 80 mph (128.75 km/h) | 83.25 mph (133.98 km/h) |
| 85 mph (136.79 km/h) | 88.46 mph (142.36 km/h) |
| 90 mph (144.84 km/h) | 93.66 mph (150.73 km/h) |
| 95 mph (152.89 km/h) | 98.86 mph (159.11 km/h) |
| 100 mph (160.93 km/h) | 104.07 mph (167.48 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1670 | 1940 | 2090 | 2182 | 2281 | 2353 | 2431 | 2523 | 2651 | 2779 | 2921 | 3035 | 3241 | 3468 | 3646 | 3760 | 3824 | 4058 | 4385 | 5096 |
Better Fuel Economy Factory Ratios Increased Power
