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My i20N

I always have ran with 1,9 bar (27,5 psi ) cold on oem pirelli pz4 and has been perfect
perfect wear over the whole tire width
 
I always have ran with 1,9 bar (27,5 psi ) cold on oem pirelli pz4 and has been perfect
perfect wear over the whole tire width
pretty sure 28psi cold will probably trigger low pressure warnings. are you getting those and just ignoring them? they go away after a while when the pressure increases about 4psi, but in winter i had to bump up my cold pressures to not have it nag me.
 
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Funnily enough the cold weather (as of yesterday) has meant that my tyre pressures have now dropped to 27psi and that has triggered the low pressure warning so I think 28psi is just outside the warning level. I’ll have to go round and adjust the pressures today.
 
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6 degrees here today 😖 so I put some air in the tyres (back to 32psi) and the tyre pressure warning quickly cleared itself. I then did a few errands and on my return the front tyres had already gone up by 2psi (no fast driving involved).
 
pretty sure 28psi cold will probably trigger low pressure warnings. are you getting those and just ignoring them? they go away after a while when the pressure increases about 4psi, but in winter i had to bump up my cold pressures to not have it nag me.
No!
why should it?
I drove with that cold pressure over 10,000 summer kilometers without any problem.
1,9 bar cold pressure is perfect.
My PZ4 are perfect worn down
 
“Why should it?”

Because 27psi does trigger the low tyre pressure warning and if you are running just 1 psi above this then I’m very surprised the warning hasn't come up.