245/45R19
A 245/45R19 tire is 27.68 inches tall and 9.6 inches wide, with a 4.34-inch sidewall, mounted on a 19-inch wheel.
Common fitments: Malibu, Taurus, Avalon
Overall diameter
27.68″
703 mm
Sidewall height
4.34″
110.3 mm
Tread width
245 mm
9.6″
Circumference
86.96″
7.2 ft
Revs per mile
729
453 per km
Wheel diameter
19″
aspect ratio 45%
Cross-section
- Overall diameter
- 27.68″
- Sidewall (each side)
- 4.34″
- Wheel
- 19″
245/45R19 in inches and millimeters
Every dimension of a 245/45R19, converted both ways. Calculated from the size code, accurate to about 1%.
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter (height) | 27.68″ | 703 mm |
| Tread width | 9.6″ | 245 mm |
| Sidewall height | 4.34″ | 110.3 mm |
| Wheel diameter | 19″ | 483 mm |
| Circumference | 86.96″ | 2209 mm |
Nominal dimensions from the size code. A real tire varies by a few millimeters between manufacturers, and a loaded tire sits slightly shorter than its free diameter.
245/45R19 compared with other sizes
All 31 practical swaps involving 245/45R19 — diameter change, speedometer impact and a fit verdict for each.
245/45R19 → 235/40R19
235/40R19
Diameter +4.8% · Borderline. Check clearance first
245/45R19 → 245/40R19
245/40R19
Diameter +3.6% · Borderline. Check clearance first
275/40R19 → 245/45R19
275/40R19
Diameter −0.1% · This fits
255/45R19 → 245/45R19
255/45R19
Diameter +1.3% · This fits
235/45R19 → 245/45R19
235/45R19
Diameter −1.3% · This fits
235/50R19 → 245/45R19
235/50R19
Diameter +2.1% · This fits
245/40R19 → 245/45R19
245/40R19
Diameter −3.5% · Borderline. Check clearance first
255/40R19 → 245/45R19
255/40R19
Diameter −2.3% · This fits
245/40R20 → 245/45R19
245/40R20
Diameter +0.1% · This fits
235/40R19 → 245/45R19
235/40R19
Diameter −4.6% · Borderline. Check clearance first
255/50R19 → 245/45R19
255/50R19
Diameter +4.9% · Borderline. Check clearance first
225/60R17 → 245/45R19
225/60R17
Diameter −0.2% · This fits
275/35R20 → 245/45R19
275/35R20
Diameter −0.4% · This fits
235/55R19 → 245/45R19
235/55R19
Diameter +5.4% · Too big a jump
215/65R17 → 245/45R19
215/65R17
Diameter +1.2% · This fits
265/35R20 → 245/45R19
265/35R20
Diameter −1.4% · This fits
245/45R19 → 255/40R19
255/40R19
Diameter +2.4% · This fits
245/45R19 → 275/40R19
275/40R19
Diameter +0.1% · This fits
245/45R19 → 245/35R20
245/35R20
Diameter +3.5% · Borderline. Check clearance first
245/45R19 → 255/35R20
255/35R20
Diameter +2.4% · This fits
245/45R19 → 215/65R17
215/65R17
Diameter −1.2% · This fits
245/45R19 → 225/60R17
225/60R17
Diameter +0.2% · This fits
245/45R19 → 235/60R17
235/60R17
Diameter −1.5% · This fits
245/45R19 → 235/45R19
235/45R19
Diameter +1.3% · This fits
245/45R19 → 235/50R19
235/50R19
Diameter −2.0% · This fits
245/45R19 → 235/55R19
235/55R19
Diameter −5.1% · Too big a jump
245/45R19 → 255/45R19
255/45R19
Diameter −1.3% · This fits
245/45R19 → 255/50R19
255/50R19
Diameter −4.7% · Borderline. Check clearance first
245/45R19 → 245/40R20
245/40R20
Diameter −0.1% · This fits
245/45R19 → 265/35R20
265/35R20
Diameter +1.4% · This fits
245/45R19 → 275/35R20
275/35R20
Diameter +0.4% · This fits
Common questions
- What is 245/45R19 in inches?
- A 245/45R19 tire is 27.68 inches tall and 9.6 inches wide, with a 4.34-inch sidewall, mounted on a 19-inch wheel. In metric that is 703 mm tall and 245 mm wide. The circumference is 86.96 inches.
- How tall is a 245/45R19 tire?
- 27.68 inches, or 703 mm. That is the overall diameter, wheel included. It turns about 729 times per mile, which is what your speedometer counts.
- What do the numbers in 245/45R19 mean?
- 245 is the tread width in millimeters, 45 is the aspect ratio — the sidewall height as a percentage of the tread width — and 19 is the wheel diameter in inches. So the sidewall is 245 × 45% = 110.3 mm tall.