The 245/40R19 is a common tire size for performance and sports cars such as BMW 3 Series, Volkswagen GTI, and Audi A4.
With a 98.0 mm sidewall (40% aspect ratio), this low-profile tire delivers sharp steering response and precise cornering grip, though the ride feels firmer over rough surfaces.
This is one of the most popular tire sizes for 19" rims, frequently used as a reference point when comparing speedometer accuracy across similar sizes.
When replacing, verify that your wheel well can accommodate the 678.6 mm overall diameter. Keep speedometer deviation within ±3% for safety and legal compliance.
| Tire Code | 245/40R19 |
| Section Width | 245 mm |
| Aspect Ratio | 40% |
| Rim Diameter | 19" |
| Sidewall Height | 98.0 mm |
| Overall Diameter | 678.6 mm / 26.72" |
| Circumference | 2131.9 mm / 83.93" |
| Revolutions per km | 469.1 |
| Revolutions per mile | 754.9 |
| Tire Code | OD (mm) | Δ mm | Δ % | Speedo at 100 km/h |
|---|---|---|---|---|
| 245/40R18 | 653.2 | -25.4 | -3.7% | 103.9 |
| 245/35R19 | 654.1 | -24.5 | -3.6% | 103.7 |
| 235/40R19 | 670.6 | -8.0 | -1.2% | 101.2 |
| 245/40R19 (current) | 678.6 | — | — | 100.0 |
| 255/40R19 | 686.6 | +8.0 | +1.2% | 98.8 |
| 245/45R19 | 703.1 | +24.5 | +3.6% | 96.5 |