So usually when is the time we get our tyres change? Mileage pls? Still thinking whether to change the stock tyres after collecting my ride... 
Actually you can search around in the forum to get the answer.
Typically, owner is encounrage to change tires when the wheels are 2 years old or the tire thread already reach the little triangle (marking on the tire), which ever comes first.
It all depends on your driving habit and pattern, if you are a light user, some ppl can drive till 50k before any changes.
But we do see some cheong-ster change at 20-30k. Normally user will be around 40k.