Bro is your center wearing off faster? If it is, then a probable cause is over pressure!

Both 34 and 36 are ok. To be correct, tyre pressure depends on load you carry. Check the sticker at the driver side door hinge.

Higher pressure does make a more bumpy ride. 34psi makes a small difference.

sticker says 36psi. SR did mention that at 36psi, the ride's bumpier. 

It's 2.5/3.6 bar, not psi! Petrol station air pumps will have conversion table.

I actually got a shock after reading your reply. 25psi for this car is really low,which will lead to accelerated wear on inner and outer circle of tire thread.