I put Firestone Winter Force tires on the wife's 06, the tire dealer put 40 lbs of air in them, this seams like a lot of pressure.
Is any one else using this tire? And what pres are U using?
I lowerd them to 32lbs, but haven't had a chance to drive it and see how it feels.

 

Wow ...
I understand your question and I have the answer, but ...
In general, our countries have adopted different systems of measures. I can not tell you in "lbs". I will say differently. If you open the driver's door, you'll see a sign at the end of the door. The notice specified the parameters of wheels. In particular, the formula of wheel and tire air pressure. The manufacturer recommends air pressure 2.1 bar. This is a good indicator. On my car, I support this pressure all the time, except winter.
In our corner of snowy winters. Crust of ice and snow drifts cover the asphalt. In these circumstances, there is a need to increase the contact patch. I achieved this by reducing the pressure to 2 atm., Sometimes up to 1.9 atm. Slipping decreases, passability increases. But further reduce the pressure can not be.
I would be glad if my experience is useful to you. I hope you can convert the "lbs" to "bar". I could not.

 

Thanks for the replay geg,
I have found that the tire information on the door post is geared to the org. equipment tire.
I not only went to a winter tire, I increased the size from a 55 to 60. Making it aprx. 2 inches higher in it's overall dia.
I was just wondering about the increased pres. from the tire dealer, and if this brand of tire was in need of 15 extra lbs of air.
Are you using the Firestone Winter Force tire?

 

Bilko, as a normal thing, whenever I have gotten my oil changed at the dealership they check the tires and fill them as needed. Standard tire pressure is about 35lbs, and I am sure they probably were thinking as the weather got colder the pressure would drop with the temperature. I believe it can drop as much as 5lbs'ish when the weather is at it's coldest. So all the dealer was thinking was the best way to keep you at 35lbs. Personally, I don't know if the full 40 would be needed, I personally had mine filled last month to 35 and it goes between 30-35 and I get great traction and such. That is just mine, and I prefer it that way, but this is really up to you.

DISCLAIMER: This is to my knowledge, and it's not right for all. Hopefully this helps.

 

Boy, 40psi is way too much. Regardless of whether you are dealing with a winter tire, summer tire, or performance tire, you should always use the tire pressure specified by Chevrolet. Running the tires at 40psi is over inflating them, that will actually give you less traction since the full width of the tread is not in contact with the road. You do lose pressure in cold weather, but this is regained from the heat generated during operation, this will bring the tires up to normal pressure. The tire pressure specified by Chevy takes all of this into account, you might not believe it sometimes, but they do know what they're doing.

 

I find mine fluctuate between 32-38 so I try and air them up for 35+ Any less and cold temps start to drop them to 27ish. When they're that low, they lose even more air.
40 is too high, you'll wear the center of the tire out awfully fast and have less traction overall.
Jim

 

I often set my to 37 in in the winter that way when it does get cold it doesnt set off my tpms. I work at a toyota dealership now and cars are always coming in for those stupid lights so we set them to 37 for the same reason. I would do 40 really ever except for in trucks at times.

 

im running 27 cold with F1's they have tread that reminds me of a tractor tire Like Geg the lower the more traction to a point dont want the center to rise these tires have carbon fiber or something in the side and corner incredible but with all the tire I have ever had you have to play with the pressure till you find the right pressure for your conditions its amazing how much a pound or two will make in the character of the tire

 

hi Bilko/
The guys opened this "theme" fully exhaustive, from all sides. Troon to add something else. Just answer the questions you asked me.
My winter tires - Bridgestone Blizzak. Here they are.



Just like you, I bought a tire diameter of 60. The volume of air gets to go a little bit more, but the pressure I support this, as described yesterday.

Incidentally, the pressure drop in temperature. If the wheel tires inflated with air, the pressure is strongly dependent on temperature and the temperature of the tires. Several times I got into a stupid situation when, after 300 km mad race between the cities I've been getting the following morning deflated wheels.
To prevent this from happening - pumped nitrogen into the wheel. Nitrogen does not change its volume in the normal range of temperatures. In Russia, this service is widespread and is not expensive. I have no doubt that in the U.S. that too much.

 

How well do you like those tires in the winter? I just bought them late summer.