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Old 11-04-2009, 01:41 AM   #1
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Tires presure

Hi everyone! . I Changed the tires of my 2009 mustang GT for shelby size 288/40R18 rear and 255/45 R18 at front but can someone tell me the recomended "in cold" presure for this tires?
Tanhks !
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Old 11-04-2009, 09:09 AM   #2
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Re: Tires presure

18s at about 35 p.s.i. That's what I roll with
:burnout:
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Old 11-04-2009, 05:09 PM   #3
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Re: Tires presure

It should say the recommended pressure on the sides of the tires
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Old 11-05-2009, 10:13 AM   #4
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Re: Tires presure

I generally run mine at 32-34psi~ right in that range. Keep an eye on wear and adjust as needed. More air = more middle tire wear, less air = more outside edge wear. Also an alignment has to be kept up~
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Old 11-05-2009, 11:02 AM   #5
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Re: Tires presure

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Originally Posted by jimbullit View Post
18s at about 35 p.s.i. That's what I roll with
:burnout:
Ok, Thank you very much.
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Old 11-05-2009, 08:08 PM   #6
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Re: Tires presure

You'll want to keep the tire pressure at the car's recommended pressure which is usually located on a sticker inside the door jam. You do not want to exceed the posted tire pressure on the tires though.
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Old 11-06-2009, 11:32 AM   #7
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Re: Tires presure

yes i saw tis sticker and say 32 but the new tires are diferent size than originals and for this reason I don't knew the presure for news one . Thanks
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Old 11-06-2009, 04:45 PM   #8
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Re: Tires presure

i usually go at 34ish. higher tire pressure also yields better gas mileage - just dont go too high.
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Old 11-06-2009, 07:25 PM   #9
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Re: Tires presure

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Originally Posted by Bstang03 View Post
It should say the recommended pressure on the sides of the tires
The PSI number listed on the side of the tires = the maximum pressure for the tires, not the recommended pressure for driving

For daily driving I run ~32 PSI, if I'm going to the track I drop the rears down to ~28 if I'm going to drive spiritedly on the street, I bump it up to 35 or 36 all 4
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Old 11-06-2009, 08:08 PM   #10
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Re: Tires presure

32................
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Old 11-08-2009, 11:04 PM   #11
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Re: Tires presure

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Originally Posted by carmonch View Post
yes i saw tis sticker and say 32 but the new tires are diferent size than originals and for this reason I don't knew the presure for news one . Thanks
Different tires won't matter regarding the correct tire pressure unless you are running special tires or are filling them up to a specific pressure for performance. Just as long as you don't exceed the maximum tire pressure that's printed on the tirewall.
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Old 11-09-2009, 10:14 AM   #12
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Re: Tires presure

32 p.s.i. - factory 17"-Upgrade to 18s - 35 p.s.i.
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