Those with 17's, what PSI do you run? - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
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post #1 of 48 (permalink) Old 09-20-2006, 06:23 PM Thread Starter
 
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Those with 17's, what PSI do you run?

I know it depends on the tire but I am curious. I have been using 38 PSI lately and changed down to 35 to see the difference, man is it a softer ride with 35 PSI. How low can these go before its underinflated?
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post #2 of 48 (permalink) Old 09-20-2006, 06:48 PM
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It all depends on the tire...sigh, why can't you just combine all these into one post or actually read the tire MFG information?
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post #3 of 48 (permalink) Old 09-20-2006, 06:51 PM
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i have 30 lol ... mfg suggested in the door
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post #4 of 48 (permalink) Old 09-20-2006, 07:36 PM
 
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30 it's way low !! You must be having a horrid MPG and tire wear on the edge.
My 225/55/17 are inflated to 37 fronts and 35 rear cold pressure. Road feel is really good maybe a little stiff for some (special suspension front), but I like to feel the road and steering is very responsive and sharp.
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post #5 of 48 (permalink) Old 09-20-2006, 07:42 PM
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Mine are at 30 PSI cold as per manufacturer's specs too. Tire wear is fine, not getting horrid mileage. Average a little above 22 MPG mostly city driving according to the OTIS. Usually hit 27-28 on the highway with the 3.5 HO.
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post #6 of 48 (permalink) Old 09-20-2006, 09:04 PM
 
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I inflate my tires to what is on the sidewall, 38psi. No more than 40 though.
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post #7 of 48 (permalink) Old 09-20-2006, 09:35 PM
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ya my specs are 30 psi and ive had my tires since new which is about 4 yrs now. They are fine, no uneven thread wear.

Thats what the door says, and thats what i follow LOl.... they look odd overinflated.... like they are about to pop LOL....

Gas mileage is average, a little low but all of my tires were that way, even my winters are 30 psi and i didnt inflate them to that pressure.
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post #8 of 48 (permalink) Old 09-20-2006, 10:19 PM
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I keep the 300M at 34 PSI for MPG and sporty handling
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post #9 of 48 (permalink) Old 09-20-2006, 10:31 PM
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Quote:
30 it's way low !! You must be having a horrid MPG and tire wear on the edge.
Sigh... everyone seems to think you need to fill tires to what is written on the sidewall. NO! The manufacturer is required by law to put on the MAXIMUM psi the tire can safley run at.... it's not the recomended pressure at all... 30-35max psi is quite enough even for a heavier car like a trep even with 4 fat asses sitting in it!

The psi on the door placard is what you should fill to... possibly a few more if carrying retarded amounts of extra weight.... it's on there because the car was designed specificly for that psi

And don't lower/raise the press if you have larger rims... if it's to rough go back to stock/get better shocks.

Last edited by DJDiggler; 09-20-2006 at 10:41 PM.
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post #10 of 48 (permalink) Old 09-21-2006, 12:34 AM Thread Starter
 
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So you are SUPPOSED to keep the PSI the sameeven with different tires? Wow.

Where is the door placard, on the driver's side?

Joe, yes I could put these in all one post, however, things wouldn't be seen quickly. Also, I am not afraid to post my questions because there is a chance that other have the same questions as I. I do understand the frustration though.
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post #11 of 48 (permalink) Old 09-21-2006, 01:33 AM
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well i got some 17s and it says max 41 psi... but i keep it equaly all around 35-38 psi...what should i put it to when i go to the track?(the front ones?)
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post #12 of 48 (permalink) Old 09-21-2006, 02:28 AM
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34-35 psi all the way around. Nice even wear patterns too.
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post #13 of 48 (permalink) Old 09-21-2006, 03:56 AM
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Quote:
...what should i put it to when i go to the track?(the front ones?)
It's a tricky balance you have to get right... to much pressure will reduce tracton and cause you to break loose on acceleration and cornering, you may not notice it but it will affect your times. To little increases rolling resistance and wil adversly affect handeling.

It would take a lot of trial and error to find the right pressure, which would change with track conditions. This is why professional race teams are so anal about monitoring tire psi... they deal with 1-2psi diferances between tires to fine tune handeling.

I'd stick around the 30 area... especially if you find you loose traction a lot. A good idea would be to try consecutive runs... one at 30 one at 40 to see what happens.
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post #14 of 48 (permalink) Old 09-21-2006, 09:34 AM
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wow thanks DJDiggler, thankfully mine are set at the correct pressure. I think i have like 1 tire at 31 but the rest are all 30 psi and the car doesnt feel soft at all, i dont think you would feel anything from 30-35 anyways. Like if it was like 15 then maybe gas MPG would be affected but my car always eats a lot of gas bcs i only drive it in the city.

Thanks for the info,
Ciprian
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post #15 of 48 (permalink) Old 09-21-2006, 09:55 AM
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Car PSI suggestion: 32 (1999 LHS)
Tire sidewall: 44 (If I remember right)

Actual: 35. I check it weekly and haven't had to add any air to it for at least a month. The only reason I had to previously was because when I took it in for an oil change, they lowered all of my tires to 30 psi for some incomprehensible reason.
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