Run-flats and TPMS: the premium-car compliance traps
A large share of German premium cars in the UAE arrive on run-flat tyres and carry no spare wheel, no jack, and sometimes no space where a spare would go. Run-flats have reinforced sidewalls that support the car for a limited distance at reduced speed after a full pressure loss, which is why the maker felt safe deleting the spare. Replacing them with conventional tyres purely to save money changes the safety design of the car: a puncture that was a controlled drive to a workshop becomes a roadside stop on a hard shoulder with no spare. If you make that change, do it knowingly, carry a quality repair kit or arrange roadside cover, and tell your insurer.
Tyre pressure monitoring is the other detail that separates careful work from quick work. Direct TPMS sensors live inside the wheel, cost real money, and are easily destroyed by careless demounting. After any tyre change the system needs sensors intact, service kits (valve cores and seals) renewed, and a relearn or reset so the car reads the correct corners. A dashboard TPMS warning that appears the day after a tyre change is not a coincidence, and a fitter who says to just ignore the light has told you everything about their standards.