Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 195/50-14 | 255/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.68 (550.6) | 23.03 (585) | 1.35 (34.4) 6.2% |
| Width inches (mm) | 7.68 (195) | 10.04 (255) | 2.36 (60) 30.8% |
| Circum. inches (mm) | 68.1 (1729.76) | 72.36 (1837.83) | 4.25 (108.07) 6.2% |
| Sidewall Height inches (mm) | 3.84 (97.5) | 4.02 (102) | 0.18 (4.5) 4.6% |
| Revolutions per mile (km) | 930.39 (578.11) | 875.68 (544.12) | -54.71 (-34) -5.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.25 mph (34.2 km/h) |
| 25 mph (40.23 km/h) | 26.56 mph (42.75 km/h) |
| 30 mph (48.28 km/h) | 31.87 mph (51.3 km/h) |
| 35 mph (56.33 km/h) | 37.19 mph (59.85 km/h) |
| 40 mph (64.37 km/h) | 42.5 mph (68.4 km/h) |
| 45 mph (72.42 km/h) | 47.81 mph (76.95 km/h) |
| 50 mph (80.47 km/h) | 53.12 mph (85.49 km/h) |
| 55 mph (88.51 km/h) | 58.44 mph (94.04 km/h) |
| 60 mph (96.56 km/h) | 63.75 mph (102.59 km/h) |
| 65 mph (104.61 km/h) | 69.06 mph (111.14 km/h) |
| 70 mph (112.65 km/h) | 74.37 mph (119.69 km/h) |
| 75 mph (120.7 km/h) | 79.69 mph (128.24 km/h) |
| 80 mph (128.75 km/h) | 85 mph (136.79 km/h) |
| 85 mph (136.79 km/h) | 90.31 mph (145.34 km/h) |
| 90 mph (144.84 km/h) | 95.62 mph (153.89 km/h) |
| 95 mph (152.89 km/h) | 100.94 mph (162.44 km/h) |
| 100 mph (160.93 km/h) | 106.25 mph (170.99 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2228 | 2589 | 2788 | 2911 | 3044 | 3139 | 3243 | 3366 | 3537 | 3708 | 3897 | 4049 | 4324 | 4628 | 4865 | 5016 | 5102 | 5415 | 5851 | 6799 |
Better Fuel Economy Factory Ratios Increased Power
