305/40R20 Tires
305/40R20 Conversion
When converted to inches, 305/40R20 is equivalent to 29.6x12R20.
305/40R20 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 4.8 inches (122 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 29.6 inches (752 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 92.9 inches (2361.3 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. 305/40R20 tire makes 682 revolutions per mile (423 revolutions per kilometer).
| Metric | Inches | |
|---|---|---|
| Overall Diameter (Tire Height) | 752 mm | 29.6" |
| Tread Width | 305 mm | 12" |
| Rim Diameter | 508 mm | 20" |
| Sidewall Height | 122 mm | 4.8" |
| Circumference | 2361.3 mm | 92.9" |
| Revolutions | 423 per km | 682 per mile |
| Best Prices on 305/40R20 Tires | |
|---|---|
 |
|
 |
|
 from $246.65 |
|
 from $221.99 |
|
 from $326.99 |
|
305/40R20 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 305/40R20 tire can be replaced with 40 compatible tire sizes. Select optional plus size to see its specs.
| Tire Size | Overall Diameter | Difference |
|---|---|---|
| 285/30R22 | 28.8" (731 mm) | -2.8% |
| 245/35R22 | 28.8" (731 mm) | -2.8% |
| 285/35R21 | 28.9" (733 mm) | -2.5% |
| 325/35R20 | 29" (736 mm) | -2.1% |
| 285/40R20 | 29" (736 mm) | -2.1% |
| 295/30R22 | 29" (737 mm) | -2% |
| 255/35R22 | 29" (737 mm) | -2% |
| 255/40R21 | 29" (737 mm) | -2% |
| 255/45R20 | 29.1" (738 mm) | -1.9% |
| 295/35R21 | 29.1" (739 mm) | -1.7% |
| 145/80R20 | 29.1" (740 mm) | -1.6% |
| 305/30R22 | 29.3" (743 mm) | -1.2% |
| 235/50R20 | 29.3" (744 mm) | -1.1% |
| 295/40R20 | 29.3" (744 mm) | -1.1% |
| 235/45R21 | 29.3" (745 mm) | -0.9% |
| 265/35R22 | 29.3" (745 mm) | -0.9% |
| 265/40R21 | 29.3" (745 mm) | -0.9% |
| 265/45R20 | 29.4" (746 mm) | -0.8% |
| 305/35R21 | 29.4" (747 mm) | -0.7% |
| 315/30R22 | 29.5" (749 mm) | -0.4% |
| 275/35R22 | 29.6" (751 mm) | -0.1% |
| 245/45R21 | 29.6" (753 mm) | 0.1% |
| 315/35R21 | 29.6" (753 mm) | 0.1% |
| 275/40R21 | 29.6" (753 mm) | 0.1% |
| 245/50R20 | 29.7" (754 mm) | 0.3% |
| 275/45R20 | 29.8" (756 mm) | 0.5% |
| 285/35R22 | 29.9" (759 mm) | 0.9% |
| 285/40R21 | 30" (761 mm) | 1.2% |
| 255/45R21 | 30" (763 mm) | 1.5% |
| 255/40R22 | 30" (763 mm) | 1.5% |
| 285/45R20 | 30.1" (764 mm) | 1.6% |
| 255/50R20 | 30.1" (764 mm) | 1.6% |
| 295/35R22 | 30.1" (765 mm) | 1.7% |
| 235/55R20 | 30.2" (766 mm) | 1.9% |
| 295/40R21 | 30.3" (769 mm) | 2.3% |
| 265/45R21 | 30.4" (771 mm) | 2.5% |
| 265/40R22 | 30.4" (771 mm) | 2.5% |
| 305/35R22 | 30.4" (773 mm) | 2.8% |
| 295/45R20 | 30.5" (774 mm) | 2.9% |
| 265/50R20 | 30.5" (774 mm) | 2.9% |