245/45R19 Tire Size
Dimensions of a 245/45R19 tire in inches and millimeters, with equivalent and plus sizes.
245/45R19 dimensions
A 245/45R19 tire is 245 mm wide with a sidewall that is 45% of the width (110 mm), mounted on a 19-inch rim. Its overall diameter is about 27.68 inches (703 mm), so it is roughly a 27.7-inch tall tire.
| Overall diameter | 27.68 in | 703 mm |
|---|---|---|
| Section width | 9.65 in | 245 mm |
| Sidewall height | 4.34 in | 110.2 mm |
| Rim diameter | 19 in | 483 mm |
| Circumference | 87.0 in | 2209 mm |
| Revolutions | 729 per mile | 453 per km |
Equivalent sizes on a 19-inch rim
These sizes stay within ±3% of the 245/45R19 diameter on the same rim — the range most tire shops use. Not every size is made in every tire model, and only sizes approved for your vehicle (with the right load and speed rating) should be fitted.
| Size | Diameter | mm | Difference |
|---|---|---|---|
| 225/50R19 | 27.86 in | 708 mm | +0.6% |
| 265/40R19 | 27.35 in | 695 mm | -1.2% |
| 255/45R19 | 28.04 in | 712 mm | +1.3% |
| 235/45R19 | 27.33 in | 694 mm | -1.3% |
| 235/50R19 | 28.25 in | 718 mm | +2.1% |
| 255/40R19 | 27.03 in | 687 mm | -2.3% |
| 225/45R19 | 26.97 in | 685 mm | -2.6% |
| 265/45R19 | 28.39 in | 721 mm | +2.6% |
Plus and minus sizes
Changing the rim size? These options on 18-, 20- and 21-inch rims keep the overall diameter within ±3%.
| Size | Diameter | mm | Difference |
|---|---|---|---|
| 245/50R18 | 27.65 in | 702 mm | -0.1% |
| 245/40R20 | 27.72 in | 704 mm | +0.1% |
| 275/45R18 | 27.74 in | 705 mm | +0.2% |
| 245/35R21 | 27.75 in | 705 mm | +0.3% |
| 275/35R20 | 27.58 in | 700 mm | -0.4% |
| 275/30R21 | 27.50 in | 698 mm | -0.7% |
| 235/35R21 | 27.48 in | 698 mm | -0.7% |
| 235/40R20 | 27.40 in | 696 mm | -1.0% |
| 265/45R18 | 27.39 in | 696 mm | -1.1% |
| 255/35R21 | 28.03 in | 712 mm | +1.3% |
Compare 245/45R19 with another size →
Frequently asked questions
How tall is a 245/45R19 tire?
About 27.68 inches (703 mm) in overall diameter.
How wide is a 245/45R19 tire?
The section width is 245 mm, about 9.6 inches.
What size can replace 245/45R19?
On the same rim, 225/50R19 is the closest size (+0.6% diameter). Use only sizes approved for your vehicle.
How many revolutions per mile does a 245/45R19 tire make?
About 729 revolutions per mile (453 per km).
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