At Tyres.co.uk, Audi Q4 e-tron tyre options include the Bridgestone Turanza Eco and Hankook Ventus S1 evo3 EV, which are 235/55 R19 101T for the front and 255/50 R19 103T for the rear, for the standard 19-inch fitting. Please confirm the exact registration, including the load index, speed rating, front-rear staggered arrangement, and so on, prior to placing an order.
On the driver's door pillar, where the tyre-pressure placard is located, you can find the Audi Q4 e-tron tyre sizes. The label shows the approved sizes for the front and rear tyres and includes load and speed ratings as well as recommended tyre pressures. Be sure to compare this info with what's on the sidewall of the tyres as well as your vehicle registration.
With regard to Audi Q4 e-tron tyres, it is not always necessary to replace them as a complete set; replace your tyres in pairs by axle where possible, keeping the original front-to-rear staggered fitment. Quattro variants should have the same type, make and tread pattern tyres on all four wheels. When having two new tyres fitted, UK safety recommendations advise that these are fitted to the rear axle.