What PSI do you guys run? - Ford Mustang Forum
 
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post #1 of 6 (permalink) Old 03-15-2011 Thread Starter
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What PSI do you guys run?

It says 35 all around, but i have 285/35/r18 and 255/45/r18 front, 18x9 rims,

What PSI should I run for best gas mileage and somewhat comfort?

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post #2 of 6 (permalink) Old 03-15-2011
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40 gives less rolling resistance but will be a little bumpier

Question: why are your front tires an inch taller than the rear ones?


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post #3 of 6 (permalink) Old 03-15-2011 Thread Starter
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Quote:
Originally Posted by davidcseifert View Post
40 gives less rolling resistance but will be a little bumpier

Question: why are your front tires an inch taller than the rear ones?
I Honestly have no idea, i bought the rims and the tires came with them, I definatley did not pick out the sizes :?:,

Is that potentially bad for the car?

And does running 40 PSI give better gas mileage as to 35 PSI?
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post #4 of 6 (permalink) Old 03-15-2011
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'99-'04 Mustang Tire Sizes at AmericanMuscle.com - Free Shipping!
Here next time u get tires look at this it will give u A better look instead of ur car sitting nose high lol
It won't hurt ur speed is in the read tires, I know this because I have done a 60mph burnout without moving lmao

Btw look at the psi max on your tires before u add more air if they max at 44 I would not do more than 38-40 if they max at 51 like mine u can put 44 in them safely, I've gotten use to rougher ride since I hardly have passengers lol

It should help at 40 not a lot or anything but it will help

BV heads, P&P lower, windstar upper, comp 218/226, 4.2 bottom end, 3k stall, flow 40's, O/R x-pipe, Pacesetter lt's, Xcal2, 65mm tb, CAI, 8.8 w/ 3.73's, MM LCA's
coming soon: blower cam and intercooled M112
dealer for Ortiz Performance; tunes, cams, etc. PM me!
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post #5 of 6 (permalink) Old 03-15-2011
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Mythbusters did a test regarding over inflating your tires. They found the gains are minimal at best. You should run your tires at the factory recommend pressure. For most this is 35psi. Any more and you are risking a blowout and uneven wear.
post #6 of 6 (permalink) Old 03-15-2011 Thread Starter
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Quote:
Originally Posted by davidcseifert View Post
'99-'04 Mustang Tire Sizes at AmericanMuscle.com - Free Shipping!
Here next time u get tires look at this it will give u A better look instead of ur car sitting nose high lol
It won't hurt ur speed is in the read tires, I know this because I have done a 60mph burnout without moving lmao

Btw look at the psi max on your tires before u add more air if they max at 44 I would not do more than 38-40 if they max at 51 like mine u can put 44 in them safely, I've gotten use to rougher ride since I hardly have passengers lol

It should help at 40 not a lot or anything but it will help

Ok thanks lol, yeah it is weird having the nose of my higher it kinda kills the look but what ever i got a good deal on the tires and rims lol,

Im only asking because i get like 12MPG in the city so im trying to make my tires proper to gain some MPG thanks
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