the case is
1 of the car's tyre is ruptured, cannot be fix..needed replacement
my mom then replace with 1 piece of what i saw is dunlop SP sport J5
when i went and look at it, i can't find the 4 digit manufacturing date anywhere on the tyre
what does that mean?

now as normal method is tyres has to be replaced in pairs so both grooves are the same for equal grip
should i replace the other 1 with the same tyre?...not knowing what the manufacturing date is?
or return the tyre and go elsewhere?

the tyre is already on the car, very hard to check if other side
the car haven't drive even 1 meter yet
the rim was removed thn take to shop to fix
if too old like 2016, i will argue with the boss why the tyre so old