my 22 Ultimate tires are Nexen P205/55R17 and the recommended pressure is 33psi and to add 3psi in the winter, and depending where I park and for how long, especially in the summer, the sun side will have a higher pressure reading till I get out and drive for a while especially highway driving, then they all will read the same and of course will read higher than the 33psi in the summer months...and I do go to 36psi when the winter starts off.
I know this below has nothing to do with your problem, but this happened to me, when I picked up my Venue from the dealer and drove off, and once got started to get use to all the changes because this is the first new car I've gotten in 20 years [I keep my vehicles for 20 or more years and that's why I only buy new] when I got the tire pressure screen up the pressure was reading 50+psi and I thought this has to be wrong, so when I got home that evening I read through all the manuals and saw what the tire pressure for my model was to be, and the next morning while the tires were cold I checked the pressure with a very reliable gauge and sure enough they were 50+psi, so I then lowered them to 33psi and the tire screen read the 33psi...I phoned the saleslady that I ordered the car through and let her know to make sure there wasn't some change that Hyundai had made for tire pressure and she said no, so I told her to let the mechanics know, and I told her that I wonder if the 50psi was done from the factory because the Venue is shipped by sea to Vancouver and than train to Ontario and then truck to my dealer, and I figured because the vehicles on ships have to be tied down more so then on truck delivery and the extra tire pressure is needed because of the pound forces put on the tires during hold down on the ship.
Being a "car nut" versus a person that really doesn't understand many things like tire pressure, I wonder if I was to continue driving with the 50+psi, and especially in the summer as too how safe that would be, other than wear, so a warning for too much psi might be a good one as well, but I guess that's why the manuals are there, and like me getting a new vehicle that has more things that it has and does versus my previous vehicles, that the toughest thing to was to set up the radio buttons for my favorite stations, or even a person getting their vehicle serviced, and usually part of that was checking tire pressure, and if the mechanic put too much or too little air in the tires, the tire pressure screen, I think is one of the best gauges we've got.
