Tyre Rosak

I had a flat tyre the other day and I didn't know it. While driving in SS2, this Honda Civic horn me and over take me and told me my tyre is flat. Anyway I went to the shop to fix it and when they pump my tyre, they cannot find where is the leak and when they found it, they gave me bad news that the tyre needs to be change.

Anyway I had to change 2 tyre's and boy does it cost even for a 13 inch tyre. Its like rm150 a piece. See total is rm300 and very soon I will need to service my car and maybe it will cost a bomb too..