Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/80-15 | 235/85-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.17 (741) | 30.73 (780.5) | 1.56 (39.5) 5.3% |
| Width inches (mm) | 8.86 (225) | 9.25 (235) | 0.39 (10) 4.4% |
| Circum. inches (mm) | 91.65 (2327.92) | 96.54 (2452.01) | 4.89 (124.09) 5.3% |
| Sidewall Height inches (mm) | 7.09 (180) | 7.86 (199.75) | 0.78 (19.75) 11% |
| Revolutions per mile (km) | 691.32 (429.57) | 656.34 (407.83) | -34.99 (-21.74) -5.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.07 mph (33.9 km/h) |
| 25 mph (40.23 km/h) | 26.33 mph (42.38 km/h) |
| 30 mph (48.28 km/h) | 31.6 mph (50.85 km/h) |
| 35 mph (56.33 km/h) | 36.87 mph (59.33 km/h) |
| 40 mph (64.37 km/h) | 42.13 mph (67.81 km/h) |
| 45 mph (72.42 km/h) | 47.4 mph (76.28 km/h) |
| 50 mph (80.47 km/h) | 52.67 mph (84.76 km/h) |
| 55 mph (88.51 km/h) | 57.93 mph (93.23 km/h) |
| 60 mph (96.56 km/h) | 63.2 mph (101.71 km/h) |
| 65 mph (104.61 km/h) | 68.46 mph (110.18 km/h) |
| 70 mph (112.65 km/h) | 73.73 mph (118.66 km/h) |
| 75 mph (120.7 km/h) | 79 mph (127.14 km/h) |
| 80 mph (128.75 km/h) | 84.26 mph (135.61 km/h) |
| 85 mph (136.79 km/h) | 89.53 mph (144.09 km/h) |
| 90 mph (144.84 km/h) | 94.8 mph (152.56 km/h) |
| 95 mph (152.89 km/h) | 100.06 mph (161.04 km/h) |
| 100 mph (160.93 km/h) | 105.33 mph (169.51 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
