305/45R20 Tires
305/45R20 Conversion
When converted to inches, 305/45R20 is equivalent to 30.8x12R20.
305/45R20 tire has a section width of 12 inches which is the measurement of tire's width from its inner sidewall to its outer sidewall. Rim diameter of 20 inches represents the size of the wheel the tire can be mounted on. Sidewall height of 5.4 inches (137 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 30.8 inches (782 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 96.7 inches (2455.5 mm) is the outer perimeter of the tire. Tire revolutions indicate the number of times a tire revolves while it covers the distance in miles or kilometers. 305/45R20 tire makes 655 revolutions per mile (407 revolutions per kilometer).
| Metric | Inches | |
|---|---|---|
| Overall Diameter (Tire Height) | 782 mm | 30.8" |
| Tread Width | 305 mm | 12" |
| Rim Diameter | 508 mm | 20" |
| Sidewall Height | 137 mm | 5.4" |
| Circumference | 2455.5 mm | 96.7" |
| Revolutions | 407 per km | 655 per mile |
| Best Prices on 305/45R20 Tires | |
|---|---|
 |
|
 |
|
305/45R20 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 305/45R20 tire can be replaced with 32 compatible tire sizes. Select optional plus size to see its specs.
| Tire Size | Overall Diameter | Difference |
|---|---|---|
| 285/35R22 | 29.9" (759 mm) | -2.9% |
| 285/40R21 | 30" (761 mm) | -2.7% |
| 255/40R22 | 30" (763 mm) | -2.4% |
| 255/45R21 | 30" (763 mm) | -2.4% |
| 285/45R20 | 30.1" (764 mm) | -2.3% |
| 255/50R20 | 30.1" (764 mm) | -2.3% |
| 295/35R22 | 30.1" (765 mm) | -2.2% |
| 235/55R20 | 30.2" (766 mm) | -2% |
| 295/40R21 | 30.3" (769 mm) | -1.7% |
| 265/40R22 | 30.4" (771 mm) | -1.4% |
| 265/45R21 | 30.4" (771 mm) | -1.4% |
| 305/35R22 | 30.4" (773 mm) | -1.2% |
| 295/45R20 | 30.5" (774 mm) | -1% |
| 265/50R20 | 30.5" (774 mm) | -1% |
| 275/40R22 | 30.7" (779 mm) | -0.4% |
| 315/35R22 | 30.7" (779 mm) | -0.4% |
| 275/45R21 | 30.7" (781 mm) | -0.1% |
| 275/50R20 | 30.9" (784 mm) | 0.3% |
| 315/40R21 | 30.9" (785 mm) | 0.4% |
| 285/40R22 | 31" (787 mm) | 0.6% |
| 325/35R22 | 31" (787 mm) | 0.6% |
| 255/55R20 | 31" (788 mm) | 0.8% |
| 285/45R21 | 31.1" (789 mm) | 0.9% |
| 255/45R22 | 31.1" (789 mm) | 0.9% |
| 255/50R21 | 31.1" (789 mm) | 0.9% |
| 325/40R21 | 31.2" (793 mm) | 1.4% |
| 285/50R20 | 31.3" (794 mm) | 1.5% |
| 295/40R22 | 31.3" (795 mm) | 1.7% |
| 265/45R22 | 31.4" (797 mm) | 1.9% |
| 245/60R20 | 31.6" (802 mm) | 2.6% |
| 305/40R22 | 31.6" (803 mm) | 2.7% |
| 295/50R20 | 31.7" (804 mm) | 2.8% |