when you inflate tires dou look at the number on the tire? or the one in the armrest? i dont have the original wheels and tires so i just look at the one on the tires? should all the tires hae a similar psi? oh and should i inflate it a little bit below the recommended psi?

 

the tire tells u what i can be inflated to....the armest is what the car was designed to ride on (base don the stock rubber)...once u swap out different rims and rubber (or even the same size rubber of a different brand) it's a whole new game...but if u're using the same size tires then try to stick with the car manufacturer's specs

not sure why u'd wanna go less than recommended (underinflated) as it kills ur mileage and shortens the life of the tire - can actually risk a blowout if u're low enough. being too high can also prematurely wear out ur tires as well .

i'd advise to say in the ballpark of the car maker's specs leaning toward the higher side


but that's just me

 

arite thanks for the tip. yea im around the recommended psi.

 

Anyone know why costco fills new tires with nitrogen?

 

because it's the latest fad in filling your tires

 

some argue that because of the uniformity of the molecules of nitrogen gas (u don't get the plethora of varied molecules as u do with "air") and the size, that it leaks out less....

 

Nitro has a few benefits over regular air.....two of which are:

1--it doesnt have any condensation in it that can corrode the rim form the inside.

2--it does not expand when it gets hot, therefore you wont have 32psi when your tire is cold and 36psi when its hot like you would with air. Whatever you set your pressure at with nitrogen, it stays there hot or cold.

I have it in my stock wheel and tire setup in my my Max and I like it....the car rides a lil better when the rubber is warm and at highway speeds.