Correct Tyre pressure after upsize

[PatchyBoy]

Guys,

My PALIO SLX 1.1 came with 165/80 R13 Tubeless tyres. I drove down straight to the tyre shop and got an upgrade to 185/65 R14 tyres - Michilen Energy XM1. The tyre dealer recommended 30 psi. I found the ride to be a bit bumpy and reduced to 28, which was pretty comfortable. I am also getting a milage of 14+ in city with 50% A/C

When I went in for the second free service at 7500 kms, the service advisor for Manipal Motors told me that 25 psi is the ideal pressure for my tyres. So I asked them to set it at 25 psi as I was getting the tyres rotated. I find a marked increase in drive comfort. Not yet checked the milage.

My question is, what is the correct pressure for my config. I do not want to compromise on milage by more that 1 KMPL and more importantly I do not want to increase tread wear.

Please advise.

Cheers,
Rajan

[Jaggu]

Go down by 3-2 psi from the stock tyre recommendation Psi for your upsized tyre. This will be close to company suggested Psi for the new size.

Now you can go further down by another 2 Psi without compromising on the wear part, again this is a very personal choice so i suggest you play around for the ideal choice for your taste.

Keep in mind to adjust the pressure at a good place with digital gauge and stick to the same place while correcting pressure. Also drive around for 2-3 days to figure out the real difference.