Advice needed here. One of my tyre just burst beyond repair.
Current configuration:
3 tyres all at 80% used condition
1 tyre brand new original spare tyre (different model tyre)

How to configure back the best tyres placement?

Do i buy and replace just a pair of tyre and put them at the rear, spare tyre keep back at the bonet.
or
Replaced all tyres and spare tyre keep back at the bonet.

Another issue is this spare tyre that come original with the car is very hard to find in the market today. Buying an identical model to pair it up with this spare is not possible.



Thanks a lot.

but is not recommended to pair up a brand new tyre with used tyre?