I have a 2015 Altis 1.6G MT, 225/40 R18 tires.
I used to run 35 PSI for the sake of better FC. Then, one day I tried going for 32 PSI - it was a noticeably improvement in terms of handling; better steering feedback, more grip. I didn't notice any drop in FC either - I was still able to do 20 km/L on a highway ecorun with 32 PSI.
Recommended pressure for my car is 32/30. Running on 32 all around and haven't looked back. Try it, you might be surprised how much grippier your car would be if pressure is lowered a little.



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