Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/80-17 | 235/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.87 (631.8) | 26.4 (670.6) | 1.53 (38.8) 6.1% |
| Width inches (mm) | 4.92 (125) | 9.25 (235) | 4.33 (110) 88% |
| Circum. inches (mm) | 78.14 (1984.86) | 82.94 (2106.75) | 4.8 (121.89) 6.1% |
| Sidewall Height inches (mm) | 3.94 (100) | 3.7 (94) | -0.24 (-6) -6% |
| Revolutions per mile (km) | 810.81 (503.81) | 763.9 (474.66) | -46.91 (-29.15) -5.8% |
235/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.23 mph (34.16 km/h) |
| 25 mph (40.23 km/h) | 26.54 mph (42.7 km/h) |
| 30 mph (48.28 km/h) | 31.84 mph (51.25 km/h) |
| 35 mph (56.33 km/h) | 37.15 mph (59.79 km/h) |
| 40 mph (64.37 km/h) | 42.46 mph (68.33 km/h) |
| 45 mph (72.42 km/h) | 47.76 mph (76.87 km/h) |
| 50 mph (80.47 km/h) | 53.07 mph (85.41 km/h) |
| 55 mph (88.51 km/h) | 58.38 mph (93.95 km/h) |
| 60 mph (96.56 km/h) | 63.68 mph (102.49 km/h) |
| 65 mph (104.61 km/h) | 68.99 mph (111.03 km/h) |
| 70 mph (112.65 km/h) | 74.3 mph (119.57 km/h) |
| 75 mph (120.7 km/h) | 79.61 mph (128.11 km/h) |
| 80 mph (128.75 km/h) | 84.91 mph (136.65 km/h) |
| 85 mph (136.79 km/h) | 90.22 mph (145.2 km/h) |
| 90 mph (144.84 km/h) | 95.53 mph (153.74 km/h) |
| 95 mph (152.89 km/h) | 100.83 mph (162.28 km/h) |
| 100 mph (160.93 km/h) | 106.14 mph (170.82 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1944 | 2258 | 2432 | 2540 | 2655 | 2738 | 2829 | 2937 | 3086 | 3234 | 3400 | 3532 | 3772 | 4037 | 4244 | 4376 | 4450 | 4723 | 5104 | 5931 |
Better Fuel Economy Factory Ratios Increased Power
