What is the safe next step if a tubeless car tire slowly loses pressure but a basic leak check finds nothing?

Answer reviewed by Jiří Chomát

Hello, I would arrange a prompt inspection by a qualified tire specialist. A basic external check cannot rule out internal damage; persistent pressure loss calls for removing the tire from the wheel for an internal inspection. Check the pressure with a reliable gauge while the tires are cold, comparing it with the vehicle handbook or pressure placard. Ask the specialist to inspect the tire, wheel and valve, and assess whether repair is appropriate. Driving underinflated can cause damage that reinflation does not fix. If the tire is flat, visibly damaged or cannot maintain the recommended pressure, arrange roadside assistance rather than driving to the workshop. Tell the specialist how much pressure it loses, over what period, and whether it has been driven underinflated.