Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-18 | 250/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.44 (646.2) | 27.84 (707.2) | 2.4 (61) 9.4% |
| Width inches (mm) | 5.31 (135) | 9.84 (250) | 4.53 (115) 85.2% |
| Circum. inches (mm) | 79.93 (2030.1) | 87.47 (2221.73) | 7.54 (191.64) 9.4% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 4.92 (125) | 1.2 (30.5) 32.3% |
| Revolutions per mile (km) | 792.74 (492.59) | 724.36 (450.1) | -68.38 (-42.49) -8.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.89 mph (35.23 km/h) |
| 25 mph (40.23 km/h) | 27.36 mph (44.03 km/h) |
| 30 mph (48.28 km/h) | 32.83 mph (52.84 km/h) |
| 35 mph (56.33 km/h) | 38.3 mph (61.64 km/h) |
| 40 mph (64.37 km/h) | 43.78 mph (70.45 km/h) |
| 45 mph (72.42 km/h) | 49.25 mph (79.26 km/h) |
| 50 mph (80.47 km/h) | 54.72 mph (88.06 km/h) |
| 55 mph (88.51 km/h) | 60.19 mph (96.87 km/h) |
| 60 mph (96.56 km/h) | 65.66 mph (105.68 km/h) |
| 65 mph (104.61 km/h) | 71.14 mph (114.48 km/h) |
| 70 mph (112.65 km/h) | 76.61 mph (123.29 km/h) |
| 75 mph (120.7 km/h) | 82.08 mph (132.09 km/h) |
| 80 mph (128.75 km/h) | 87.55 mph (140.9 km/h) |
| 85 mph (136.79 km/h) | 93.02 mph (149.71 km/h) |
| 90 mph (144.84 km/h) | 98.5 mph (158.51 km/h) |
| 95 mph (152.89 km/h) | 103.97 mph (167.32 km/h) |
| 100 mph (160.93 km/h) | 109.44 mph (176.13 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1843 | 2141 | 2306 | 2408 | 2518 | 2596 | 2683 | 2785 | 2926 | 3067 | 3224 | 3349 | 3577 | 3828 | 4024 | 4150 | 4220 | 4479 | 4840 | 5624 |
Better Fuel Economy Factory Ratios Increased Power
