Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/65-15 | 235/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.47 (621.5) | 27.95 (710) | 3.48 (88.5) 14.2% |
| Width inches (mm) | 7.28 (185) | 9.25 (235) | 1.97 (50) 27% |
| Circum. inches (mm) | 76.87 (1952.5) | 87.82 (2230.53) | 10.95 (278.03) 14.2% |
| Sidewall Height inches (mm) | 4.73 (120.25) | 6.48 (164.5) | 1.74 (44.25) 36.8% |
| Revolutions per mile (km) | 824.25 (512.16) | 721.51 (448.32) | -102.74 (-63.84) -12.5% |
235/70-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.85 mph (36.77 km/h) |
| 25 mph (40.23 km/h) | 28.56 mph (45.96 km/h) |
| 30 mph (48.28 km/h) | 34.27 mph (55.16 km/h) |
| 35 mph (56.33 km/h) | 39.98 mph (64.35 km/h) |
| 40 mph (64.37 km/h) | 45.7 mph (73.54 km/h) |
| 45 mph (72.42 km/h) | 51.41 mph (82.73 km/h) |
| 50 mph (80.47 km/h) | 57.12 mph (91.93 km/h) |
| 55 mph (88.51 km/h) | 62.83 mph (101.12 km/h) |
| 60 mph (96.56 km/h) | 68.54 mph (110.31 km/h) |
| 65 mph (104.61 km/h) | 74.26 mph (119.5 km/h) |
| 70 mph (112.65 km/h) | 79.97 mph (128.7 km/h) |
| 75 mph (120.7 km/h) | 85.68 mph (137.89 km/h) |
| 80 mph (128.75 km/h) | 91.39 mph (147.08 km/h) |
| 85 mph (136.79 km/h) | 97.1 mph (156.27 km/h) |
| 90 mph (144.84 km/h) | 102.82 mph (165.47 km/h) |
| 95 mph (152.89 km/h) | 108.53 mph (174.66 km/h) |
| 100 mph (160.93 km/h) | 114.24 mph (183.85 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1836 | 2133 | 2297 | 2399 | 2508 | 2586 | 2672 | 2774 | 2914 | 3055 | 3211 | 3336 | 3563 | 3813 | 4008 | 4133 | 4203 | 4461 | 4821 | 5602 |
Better Fuel Economy Factory Ratios Increased Power
