245/40R19 Tire Size
Dimensions of a 245/40R19 tire in inches and millimeters, with equivalent and plus sizes.
245/40R19 dimensions
A 245/40R19 tire is 245 mm wide with a sidewall that is 40% of the width (98 mm), mounted on a 19-inch rim. Its overall diameter is about 26.72 inches (679 mm), so it is roughly a 26.7-inch tall tire.
| Overall diameter | 26.72 in | 679 mm |
|---|---|---|
| Section width | 9.65 in | 245 mm |
| Sidewall height | 3.86 in | 98.0 mm |
| Rim diameter | 19 in | 483 mm |
| Circumference | 83.9 in | 2132 mm |
| Revolutions | 755 per mile | 469 per km |
Equivalent sizes on a 19-inch rim
These sizes stay within ±3% of the 245/40R19 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 |
|---|---|---|---|
| 225/45R19 | 26.97 in | 685 mm | +1.0% |
| 235/40R19 | 26.40 in | 671 mm | -1.2% |
| 255/40R19 | 27.03 in | 687 mm | +1.2% |
| 265/35R19 | 26.30 in | 668 mm | -1.5% |
| 235/45R19 | 27.33 in | 694 mm | +2.3% |
| 265/40R19 | 27.35 in | 695 mm | +2.4% |
| 225/40R19 | 26.09 in | 663 mm | -2.4% |
| 255/35R19 | 26.03 in | 661 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 |
|---|---|---|---|
| 245/45R18 | 26.68 in | 678 mm | -0.1% |
| 245/35R20 | 26.75 in | 680 mm | +0.1% |
| 275/40R18 | 26.66 in | 677 mm | -0.2% |
| 245/30R21 | 26.79 in | 680 mm | +0.3% |
| 235/30R21 | 26.55 in | 674 mm | -0.6% |
| 275/30R20 | 26.50 in | 673 mm | -0.8% |
| 235/35R20 | 26.48 in | 672 mm | -0.9% |
| 275/25R21 | 26.41 in | 671 mm | -1.1% |
| 255/30R21 | 27.02 in | 686 mm | +1.1% |
| 255/35R20 | 27.03 in | 686 mm | +1.2% |
Compare 245/40R19 with another size →
Frequently asked questions
How tall is a 245/40R19 tire?
About 26.72 inches (679 mm) in overall diameter.
How wide is a 245/40R19 tire?
The section width is 245 mm, about 9.6 inches.
What size can replace 245/40R19?
On the same rim, 225/45R19 is the closest size (+1.0% diameter). Use only sizes approved for your vehicle.
How many revolutions per mile does a 245/40R19 tire make?
About 755 revolutions per mile (469 per km).
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