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Thread: MPG poll
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Old 09-28-2009, 04:29 PM   #561
MellowYellow
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Join Date: Aug 2008
Fan#: 58759
Location: Harford County, MD
What I Drive: 2003 Red ZX5 Zetec 2.0 Manual 5

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Quote:
Originally Posted by everwinter View Post
You have decreased tire wear with the higher tire pressure. Lower tire pressure increases tire wear.

I've noticed a small change in braking time.

I inflate them to 39, because I like the firmer ride, better mpg (1 mpg better), & I'm trying to get my tires to at least 40k & possibly beyond. Also I like the decreased resistance. With tires at 34 it feels like when I biked around with a low tire & required much more effort. With increased tire pressure you sail along with much less overall effort.

34 is the minimum, so 39 is hardly excessive. I know many who inflate to 10 over, which would be 44 for the focus.
I agree that 39 is not excessive.
I inflate to 40 PSI. Many tires these days are rated to 51 PSI or more, and some people inflate even higher (but i would not recommend it).
I average over 36 MPG in what I would call suburban/country commuting.
I also usually shift below 2000 RPM, since the car has good low end torque.
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MellowYellow did not turn the corner (I think the RF tire was going flat), so now I am seeing red
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