30-35psi is standard on just about anything. Just don't go over what the tire's max rating is (on the sidewall).
Fanatic
30-35psi is standard on just about anything. Just don't go over what the tire's max rating is (on the sidewall).
[O o)O=\x/=O(o O]
The things we do for girls who won't sleep with us.
Patrick says:
dads is too long so it wont fit
so i took hers out
and put mine in
Rookie
Which tire pressure numbers has higher priority? The one stated by the car manufacture or the ones on the tires? My tire dealership say that I should have my tires at 40psi and 55psi is max, but the car manuel says 32psi. Right now currently 32psi.
I'm a real boy!
Enthusiast
Maybe he can experiment on the setup in order to induce oversteering characteristics on the vehicle!!!
Minimising losses can maximise net gains
Fanatic
I always go by what the door placard on the car says.
[O o)O=\x/=O(o O]
The things we do for girls who won't sleep with us.
Patrick says:
dads is too long so it wont fit
so i took hers out
and put mine in
Enthusiast
^^Yeah, what he said; door placard. ^^
45-series tires will generally need to be inflated higher than taller tires, say 60-series. Inflation pressure is also dependant on a cars' weight and the size of tire. I have 215/45-17 on my Subaru and the recommended inflation pressure is 35/33 (F/R psi).
Keep it inflated on the high side, it'll give you better mileage too, unless you notice excessive wear along the center of the tread. Conversely, if there's just wear on the edges, you're under-inflating. If it's wearing along just one edge, check your alignment or corner slower.
"Racing improves the breed" ~Sochiro Honda
Novice
The tire has a suggestion for the max, the car has a suggestion for the max, pick the lowest of the two.
Last edited by 770; 11-10-2006 at 10:05 AM.
Novice
Or just fill it up to 200psi , you'll get great gas mileage!
Enthusiast
What? Are you a genius? How does the manufacturer know what tires you decided to replace the originals with, making the recommended psi for OE tires irrelevent.Originally Posted by 770
Oh, wait you're being funny. Hahaha!
"Racing improves the breed" ~Sochiro Honda
Rookie
The tire manufacture would recommend using the same size tires for replacement. Since the recommended pressure is based on the tire size and vehicle weight it should still be applicable for most people. Assuming they stick with the same size tire and same tire construction (i.e. radial).
It is not as if the tire manufacture knows what the application will be that is why they just specify the maximum pressure and load the tire can be subjected to.
"In theory, theory and practice are the same. In practice, they are not."
Enthusiast
The tire manufacturers and retailers usually recommend replacing with the same size but many times, as in this thread the person went for a different size.
The maximum allowable inflation is about much higher than the recommended pressure, making it too high for normal use. For sustained high speed driving (100+ mph) it's recommended to increase pressure but to inflate to the maximum stamped on the side of the tire is wrong.
Some useful information at tirerack.com on inflation.
http://www.tirerack.com/tires/tirete...currentpage=72
"Racing improves the breed" ~Sochiro Honda
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