Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 25/7.5-15 | 175/55-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.08 (636.94) | 22.58 (573.5) | -2.5 (-63.44) -10% |
| Width inches (mm) | 7.52 (191) | 6.89 (175) | -0.63 (-16) -8.4% |
| Circum. inches (mm) | 78.78 (2001.01) | 70.93 (1801.7) | -7.85 (-199.3) -10% |
| Sidewall Height inches (mm) | 5.04 (127.97) | 3.79 (96.25) | -1.25 (-31.72) -24.8% |
| Revolutions per mile (km) | 804.27 (499.75) | 893.23 (555.03) | 88.97 (55.28) 11.1% |
175/55-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.01 mph (28.98 km/h) |
| 25 mph (40.23 km/h) | 22.51 mph (36.23 km/h) |
| 30 mph (48.28 km/h) | 27.01 mph (43.47 km/h) |
| 35 mph (56.33 km/h) | 31.51 mph (50.72 km/h) |
| 40 mph (64.37 km/h) | 36.02 mph (57.96 km/h) |
| 45 mph (72.42 km/h) | 40.52 mph (65.21 km/h) |
| 50 mph (80.47 km/h) | 45.02 mph (72.45 km/h) |
| 55 mph (88.51 km/h) | 49.52 mph (79.7 km/h) |
| 60 mph (96.56 km/h) | 54.02 mph (86.94 km/h) |
| 65 mph (104.61 km/h) | 58.53 mph (94.19 km/h) |
| 70 mph (112.65 km/h) | 63.03 mph (101.43 km/h) |
| 75 mph (120.7 km/h) | 67.53 mph (108.68 km/h) |
| 80 mph (128.75 km/h) | 72.03 mph (115.92 km/h) |
| 85 mph (136.79 km/h) | 76.53 mph (123.17 km/h) |
| 90 mph (144.84 km/h) | 81.04 mph (130.41 km/h) |
| 95 mph (152.89 km/h) | 85.54 mph (137.66 km/h) |
| 100 mph (160.93 km/h) | 90.04 mph (144.91 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2273 | 2641 | 2844 | 2970 | 3105 | 3202 | 3308 | 3434 | 3608 | 3782 | 3976 | 4130 | 4411 | 4720 | 4962 | 5117 | 5204 | 5523 | 5968 | 6935 |
Better Fuel Economy Factory Ratios Increased Power
