Hi Prof, you can tell as they are an authorized dealer, i changed all my tyres there and this is the most honest guy i can find. You can call the tyre distributor in Johore. Which brand did you buy? Michellin or Pirelli? You can call them and find out easily.
I lost tyre caps, he replaced them, when my rear light bulbs blew, he replaced them. One of the window motors on one of my cars died, he replaced it as well. All with no charge, of course this is because i send all my cars including my relatives one to him and i never asked for anything in return.
One of the most honest guys i can find. I even intro a friend to change oil, etc, he kept telling my friend don't change this, don't need to change that, etc.
I used to go to a shop very nearby to them, the main reason why i went to Michellin was to get a 2nd opinion. The first shop proposed 520 RM to change parts for my car to fix the problem. I went to this Michellin shop just to get a 2nd opinion as i thought it was only prudent.
I got quote 150 RM as he told me that one of the parts don't even need to be replaced )the more expensive one) and paid a grand total of $150 to fix the car. He was also the only one in the immediate area who had the devices to interface with the car computer and used it to diagnose my cars. Its been more than 8 months now, no problem so far. I even got it checked at my old mechanic in Sutera area, even they were impressed.
Btw, for bros here who need nitrogen in their tyres, there is a tyre shop near Sutera mall (the one that they say specializes in Honda cars) that has a nitrogen machine.