Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/40-18 | 245/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.29 (693.2) | 26.68 (677.7) | -0.61 (-15.5) -2.2% |
| Width inches (mm) | 11.61 (295) | 9.65 (245) | -1.97 (-50) -16.9% |
| Circum. inches (mm) | 85.74 (2177.75) | 83.82 (2129.06) | -1.92 (-48.69) -2.2% |
| Sidewall Height inches (mm) | 4.65 (118) | 4.34 (110.25) | -0.31 (-7.75) -6.6% |
| Revolutions per mile (km) | 738.99 (459.19) | 755.9 (469.69) | 16.9 (10.5) 2.3% |
245/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.55 mph (31.47 km/h) |
| 25 mph (40.23 km/h) | 24.44 mph (39.33 km/h) |
| 30 mph (48.28 km/h) | 29.33 mph (47.2 km/h) |
| 35 mph (56.33 km/h) | 34.22 mph (55.07 km/h) |
| 40 mph (64.37 km/h) | 39.11 mph (62.93 km/h) |
| 45 mph (72.42 km/h) | 43.99 mph (70.8 km/h) |
| 50 mph (80.47 km/h) | 48.88 mph (78.67 km/h) |
| 55 mph (88.51 km/h) | 53.77 mph (86.53 km/h) |
| 60 mph (96.56 km/h) | 58.66 mph (94.4 km/h) |
| 65 mph (104.61 km/h) | 63.55 mph (102.27 km/h) |
| 70 mph (112.65 km/h) | 68.43 mph (110.14 km/h) |
| 75 mph (120.7 km/h) | 73.32 mph (118 km/h) |
| 80 mph (128.75 km/h) | 78.21 mph (125.87 km/h) |
| 85 mph (136.79 km/h) | 83.1 mph (133.74 km/h) |
| 90 mph (144.84 km/h) | 87.99 mph (141.6 km/h) |
| 95 mph (152.89 km/h) | 92.88 mph (149.47 km/h) |
| 100 mph (160.93 km/h) | 97.76 mph (157.34 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
