Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-16 | 245/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.44 (595.4) | 26.68 (677.7) | 3.24 (82.3) 13.8% |
| Width inches (mm) | 5.31 (135) | 9.65 (245) | 4.33 (110) 81.5% |
| Circum. inches (mm) | 73.64 (1870.5) | 83.82 (2129.06) | 10.18 (258.55) 13.8% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 4.34 (110.25) | 0.62 (15.75) 16.7% |
| Revolutions per mile (km) | 860.38 (534.61) | 755.9 (469.69) | -104.48 (-64.92) -12.1% |
245/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.76 mph (36.64 km/h) |
| 25 mph (40.23 km/h) | 28.46 mph (45.8 km/h) |
| 30 mph (48.28 km/h) | 34.15 mph (54.95 km/h) |
| 35 mph (56.33 km/h) | 39.84 mph (64.11 km/h) |
| 40 mph (64.37 km/h) | 45.53 mph (73.27 km/h) |
| 45 mph (72.42 km/h) | 51.22 mph (82.43 km/h) |
| 50 mph (80.47 km/h) | 56.91 mph (91.59 km/h) |
| 55 mph (88.51 km/h) | 62.6 mph (100.75 km/h) |
| 60 mph (96.56 km/h) | 68.29 mph (109.91 km/h) |
| 65 mph (104.61 km/h) | 73.98 mph (119.07 km/h) |
| 70 mph (112.65 km/h) | 79.68 mph (128.23 km/h) |
| 75 mph (120.7 km/h) | 85.37 mph (137.39 km/h) |
| 80 mph (128.75 km/h) | 91.06 mph (146.54 km/h) |
| 85 mph (136.79 km/h) | 96.75 mph (155.7 km/h) |
| 90 mph (144.84 km/h) | 102.44 mph (164.86 km/h) |
| 95 mph (152.89 km/h) | 108.13 mph (174.02 km/h) |
| 100 mph (160.93 km/h) | 113.82 mph (183.18 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1924 | 2235 | 2407 | 2513 | 2628 | 2709 | 2799 | 2906 | 3053 | 3201 | 3364 | 3495 | 3733 | 3995 | 4199 | 4330 | 4404 | 4674 | 5050 | 5869 |
Better Fuel Economy Factory Ratios Increased Power
