last time i oso keep holding myself until 8K mileage 

ur car still new and feel wow..
if u dont tukar and feel the better comfort, wait till 1 yr or 2 yr only change. really no syok feeling anymore. 
more u delay, lower ur stock tyre trade in.
unless u travel a lot, <1 yr can finish the tyre thread.

looking at the good side, 2-3 years later maybe change new car already. save on tyre. 

i change at wangsa maju/sri rampai, 350 each include balancing and alignment, trade in 150 each.

i think place like klang or rawang can get cheaper, provided u live nearby