At Tyres.co.uk you can find the Michelin Latitude Sport 3 MO1 and the Goodyear Eagle F1 Asymmetric 6 for the 19-inch staggered fitment of the Mercedes EQC 400 4MATIC (235/55 R19 front /255/50 R19 rear). Please check the load and speed ratings that match your registration.
Tyre size for Mercedes EQC can be found by opening the charging socket and reading the tyre pressure label. The label contains a description of the front and rear approved tyre pressure, pressure and the loading capacity of the vehicle. So, when buying tyres, the registration also needs to be checked.
All Mercedes EQCs have 4MATIC, meaning all need the same make and type of approved tyres on both axles. Therefore, it is not allowed to have one new tyre on the front and one new tyre on the rear. In fact, if you can't maintain that configuration, all four need to be replaced.