In the UK, the legal minimum is 1.6mm across the central three-quarters of the tyre around the full circumference. Many drivers replace earlier (for example around 3mm) for stronger wet-weather grip.
You can, as long as the tyres are the correct size and specification, but it is best practice to fit matching tyres on the same axle for balanced grip and predictable handling.
Many Crossland X versions have tyre pressure monitoring. The fitting garage can usually reset or relearn the system, but the exact method depends on whether your car uses direct sensors or an indirect system.
After choosing tyres, select a nearby garage, pick an available time slot, and complete checkout online. Your tyres are then delivered to the garage ready for your appointment.