245/45R21 Tires
245/45R21 Conversion
When converted to inches, 245/45R21 is equivalent to 29.6x9.6R21.
245/45R21 tire has a section width of 9.6 inches which is the measurement of tire's width from its inner sidewall to its outer sidewall. Rim diameter of 21 inches represents the size of the wheel the tire can be mounted on. Sidewall height of 4.3 inches (110 mm) is the measurement from the wheel rim to top of the tire tread. Overall diameter of 29.6 inches (753 mm) reflects the outer diameter of the tire and stands for tire height. Circumference of 92.9 inches (2364.4 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. 245/45R21 tire makes 682 revolutions per mile (423 revolutions per kilometer).
| Metric | Inches | |
|---|---|---|
| Overall Diameter (Tire Height) | 753 mm | 29.6" |
| Tread Width | 245 mm | 9.6" |
| Rim Diameter | 533.4 mm | 21" |
| Sidewall Height | 110 mm | 4.3" |
| Circumference | 2364.4 mm | 92.9" |
| Revolutions | 423 per km | 682 per mile |
| Best Prices on 245/45R21 Tires | |
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 from $171.33 |
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 from $450.06 |
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 from $217.97 |
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245/45R21 Replacement Tire Sizes
Replacement tires have to be within 3% of the original tire's overall diameter. 245/45R21 tire can be replaced with 28 compatible tire sizes. Select optional plus size to see its specs.
| Tire Size | Overall Diameter | Difference |
|---|---|---|
| 245/35R22 | 28.8" (731 mm) | -2.9% |
| 285/30R22 | 28.8" (731 mm) | -2.9% |
| 285/35R21 | 28.9" (733 mm) | -2.7% |
| 305/25R23 | 29" (736 mm) | -2.3% |
| 295/30R22 | 29" (737 mm) | -2.1% |
| 255/35R22 | 29" (737 mm) | -2.1% |
| 255/40R21 | 29" (737 mm) | -2.1% |
| 295/35R21 | 29.1" (739 mm) | -1.9% |
| 315/25R23 | 29.2" (742 mm) | -1.5% |
| 305/30R22 | 29.3" (743 mm) | -1.3% |
| 235/45R21 | 29.3" (745 mm) | -1.1% |
| 265/40R21 | 29.3" (745 mm) | -1.1% |
| 265/35R22 | 29.3" (745 mm) | -1.1% |
| 305/35R21 | 29.4" (747 mm) | -0.8% |
| 315/30R22 | 29.5" (749 mm) | -0.5% |
| 275/35R22 | 29.6" (751 mm) | -0.3% |
| 315/35R21 | 29.6" (753 mm) | 0% |
| 275/40R21 | 29.6" (753 mm) | 0% |
| 285/35R22 | 29.9" (759 mm) | 0.8% |
| 285/40R21 | 30" (761 mm) | 1.1% |
| 295/30R23 | 30" (762 mm) | 1.2% |
| 255/45R21 | 30" (763 mm) | 1.3% |
| 255/40R22 | 30" (763 mm) | 1.3% |
| 295/35R22 | 30.1" (765 mm) | 1.6% |
| 295/40R21 | 30.3" (769 mm) | 2.1% |
| 265/40R22 | 30.4" (771 mm) | 2.4% |
| 265/45R21 | 30.4" (771 mm) | 2.4% |
| 305/35R22 | 30.4" (773 mm) | 2.7% |