When is the right time to change tyres? Hey folks, what is the right time to switch to a new set of tyres. I tried searching on the forum but didn't get a specific discussion around this one.tyres have worn out, though still got some tread on them and probably may last another 5K km or more. Should I continue using them or swap them immediately. My driving is mainly in city plus occasional long weekend trips on highway when I would typically drive in the range of 100-130 kmph.