255/55 R19 111H XL alternatives for the original Audi e-tron 2018-2023 with 19-inch wheels are available at Tyres.co.uk. The e-tron had many options for rims and wheels, so check the placard and registration you have before purchasing.
For more information on the Audi E-tron tyres and the tyre placards, you can find the tyre placard at the B-pillar of the Audi e-tron. It is visible when the driver’s door is open. Each placard has information about the approved tyre size, load index, and speed rating, as well as the recommended tyre pressure. Look at the chart on the placard and check the tyre pressure against the chart in the manual before ordering.
The Audi e-tron has an electric quattro system, and Audi states that all four tyres must be the same brand, manufacturing process, and tread pattern. Therefore, if this is not the case, all four tyres need to be replaced. According to guidance in the UK, when an axle pair is being changed, the new axle pair should be mounted on the rear axle of the vehicle.