The 245/45R19 is a common tire size for luxury and premium vehicles such as BMW 5 Series, Mercedes-Benz E-Class, and Audi A6.
With a 110.3 mm sidewall (45% aspect ratio), this tire offers a balanced blend of ride comfort and handling precision — versatile for both city driving and spirited cornering.
Compared to the baseline 245/40R19, this tire's overall diameter differs by +3.6% — a speedometer calibrated for 245/40R19 would read 96.5 km/h at an actual 100 km/h.
When replacing, verify that your wheel well can accommodate the 703.1 mm overall diameter. Keep speedometer deviation within ±3% for safety and legal compliance.
| Tire Code | 245/45R19 |
| Section Width | 245 mm |
| Aspect Ratio | 45% |
| Rim Diameter | 19" |
| Sidewall Height | 110.3 mm |
| Overall Diameter | 703.1 mm / 27.68" |
| Circumference | 2208.9 mm / 86.96" |
| Revolutions per km | 452.7 |
| Revolutions per mile | 728.6 |
| Tire Code | OD (mm) | Δ mm | Δ % | Speedo at 100 km/h |
|---|---|---|---|---|
| 245/35R19 | 654.1 | -49.0 | -7.0% | 107.5 |
| 245/45R18 | 677.7 | -25.4 | -3.6% | 103.7 |
| 245/40R19 | 678.6 | -24.5 | -3.5% | 103.6 |
| 235/45R19 | 694.1 | -9.0 | -1.3% | 101.3 |
| 245/45R19 (current) | 703.1 | — | — | 100.0 |
| 255/45R19 | 712.1 | +9.0 | +1.3% | 98.7 |
| 245/45R20 | 728.5 | +25.4 | +3.6% | 96.5 |