Enduro

The recommended tire pressure posted under the armrest for the 99 model is 29psi but I wanted to know at what temperature is that measured at. I need it to adjust the pressure accordingly with the decrease/increase of air temp which I believe ~1psi/10F.

mzmtg

iTrader: (11)

That's the cold pressure. Dont worry too much about trying to change it due to weather changes, just check it every couple of weeks.

breaux124

iTrader: (1)

You supposed to check the pressure when the tire is "cold" Basically, that means when you haven't driven more than a mile or two on them, or that they haven't been driven for about three hours.

mzmtg

iTrader: (11)

Yeah, I checked mine at home and then drove to the gas station to fill them up. The pressure went up 2psi all the way around in that 10 minute drive. I know its not totally accurate, but what I do is measure at home, then note where each tire is and then add that much when I get to the pump.

Enduro

Yes the 29psi is for cold tire measurement. But that "cold" factor is related to the tire itself and not the ambient air temperature. If the tire pressure was at 29psi last summer, at 70F, then this winter at 30F the pressure would probably drop by ~4psi. So I'm assuming that by knowing at what air temperature that 29psi was recommended at then I can adjust it accordingly to climate changes.

DFWmax

what psi do you run your tires at? i know the recommended pressure is 29psi, but that leaves for a soft, mushy feel.

i run my tires at 35 psi. i have two of the original rs-a and two dunlop sp sport 8000. fyi, the tires are wearing evenly, and the car feels more responsive (more bumps too, but makes it feel more like a sports sedan...).

Enduro

This winter I started out at an even 34 all around but drop it down to 33 since the higher setting was too bumpy and unsettling on even roads. Yeah at 34 it was a bit more crips in handling but 33 rides better absorbing bumps when cornering. This setting is for my stock 15" metal rims with some Michelin tires I bought from sears.

breaux124

iTrader: (1)

According to the panel under the front armrest, my 1997 SE is supposed to have 32 in the front and 29 in the back. I bumped it up 1 psi all around during the winter.

clee130

Aren't you supposed to bump it down so you can get better traction in snow?

breaux124

iTrader: (1)

Yeah, if you're driving in snow. But since normal everyday temperatures are lower, the air in your tires is colder then say during the summer. Colder air expands less than hot air, so to adjust for the colder temps in the winter I add a little more pressure. I'm just trying to get a little better gas milage, but I understand where you are coming from.
Actually, some people believe that if you decrease your standard tire pressure below factory specs that you'll get better traction in the snow, but that isn't true. Because you have a larger surface area touching the snow. Consider the traction ability between 8" wide tires and 5" wide tires in the snow.