QUOTE(Thrust @ Jan 18 2015, 02:03 PM)
It is recommended to swap front & to rear every 10,000km.. But I do it every 15,000-20,000km depending on feel of the steering & whether alignment is out.
Replace all 4 new tyres are subjective. There are a lot of anomalies that will affect the lifetime of a tyre. Some tyres last a lot longer than other, how we drive the car, how we take care of the tyres etc..
It is recommended to replace every 4 years though..
QUOTE(sj0217 @ Jan 18 2015, 08:55 PM)
This could be really subjective. The tyre shop advice me to swap on 20k, change all 4 new tyres on 40k
Feel not bad with stock tyre CPC2, wanna give a try with XM2 when the time to change all 4

if the tires are not worn out, and still looks good for after 2 years, change it as the rubber will harden over time, if you are driving it regularly, i guess in 2 years time it will wear out
but like some where they rarely drive it, and the usage is not wearing out the tires, then 2 - 3 years should be it ...
if not gonna change all 4, at least the front 2