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.
OE on the BMW M5 (F10), Audi S6 (C7), BMW 7 Series (F01/F02) base and Acura TLX (UB4). Load index 94Y or 98Y reinforced. Performance-luxury staple — Michelin Pilot Sport 4S and Continental SportContact 7 are typical OE fitments.
Low-profile sizes in this group prioritize steering response and lateral grip over sidewall protection from pothole impacts. Curb-rash on the rim and pinched sidewalls are the dominant failure modes; insurance-claim data shows these sizes register two to three times more wheel damage than 50+ aspect ratios. Plan for a spare set of rims if the route includes broken urban pavement.
| 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 |