hi bro,
in my opinion, at 54,000km, its about time to change. The original tyres better known as stock tyres are rather lasting and hence the thread may still be quite deep. Although you are still comfortable driving with these tyres, but they may have harden due to our hot and wet climate.
as a general guide, some pple tend to change tyres from the following reasons:
1. Average every 2 years (some bros i know change every 1.5 yrs)
2. Worn out thread (perhaps due to high mileage, or hard driving)
3. Unrepairable puncture (especially if kenna at the sidewall)
4. Because the current tyres are unbearable (noisy, too hard or not grippy enough etc)
5. Or, just because they want to try a new model of tyre for the fun of it.
An average user of the car clocks about 20,000km/year. Your tires are now 54,000km. Even if the car is young, the tires are definitely used for quite some times already. To me, since tires are the only thing in contact with the road, i would invest in good tires, because the concept is exactly like cheating on parking coupon or parking timing. u can escape many times, but u kenna 1 $30 fine, and all the cheating on the coupon goes down the drain. Likewise, get a good tire and u will have an ease of mind
