Guys do you guys check tyre manufacturers years? I went to hankook website for the guide.. But seems out of 4 tyre I only able to find 2 which is in passager side.. Is it confirm have the stamp of manufacturer's? The 2 I saw is week9 of 17 and week 4of 17 assume I see it correctly 
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Certain brands have the word outside and inside written on the side walls.  Can't remember the brand.

Once I was at a car wash sitting down on a chairs and there was this car with the front tyre display outside and the back tyres show inside.

I told the driver that his tyres have been displayed wrongly and it was only installed a few days ago. Still very new.

Told him to fork his tyre shop kau kau.