"Sensed" effect of increased tire pressure. - Fuelly Forums

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Old 07-27-2007, 02:15 PM   #1
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"Sensed" effect of increased tire pressure.

The last couple of tanks I've had my '05 Colorado at 38#. Didn't feel much difference in driving. This morning I upped it to 40#. Although I don't trust "butt dynos", I sense that the two pound change really makes it run more "free". It'll be interesting to see if my FE improves to match my impression.
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Old 07-27-2007, 02:17 PM   #2
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Originally Posted by Graeme View Post
The last couple of tanks I've had my '05 Colorado at 38#. Didn't feel much difference in driving. This morning I upped it to 40#. Although I don't trust "butt dynos", I sense that the two pound change really makes it run more "free". It'll be interesting to see if my FE improves to match my impression.
Probably will help. Unless you get the idea that you can fly along 5-10 mph faster than before (BTDT). That will kill any FE gains right there.
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Currently getting +/- 50 mpg in fall weather. EPA is 31/39 so not too shabby. WAI, fuel cutoff switch, full belly pan, smooth wheel covers.

Now driving '97 Civic HX; tires ~ 50 psi. '89 Volvo 240 = semi-retired.
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Old 07-27-2007, 02:35 PM   #3
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I went from mid 40s to 55psi and it felt like I was rolling a lot easier. I guess going up more than 10 pounds could easily do that but it might have been placebo effect also.
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Old 07-27-2007, 05:58 PM   #4
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44 in front 50 in back makes it ride like crap but ive gotton used to it and i like it better then 35psi all around
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Old 07-27-2007, 07:41 PM   #5
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Is there a benefit to different pressures front and back?
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Old 07-27-2007, 08:28 PM   #6
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well id up the front and lower the rear on a truck...since back half of a truck=alot less weght than the front...
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Old 07-27-2007, 08:36 PM   #7
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well i do it in the back for better steering. at 50 psi in front i cant take as sharp as turns because they start to slide to easy but the backs dont matter.
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Old 07-28-2007, 07:33 AM   #8
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"Butt dyno" often is the placebo effect.

Took a fifty-mile highway trip last evening and still have the sense of rolling easier. The purpose of my post was to mention that going from 35# to 38# didn't seem to make a discernable difference, but 38# to 40# did.

No intentional change in driving habit or speed--much to my wife's frustration. She's an aggressive and fast driver who doesn't get the same kick I do out of FE figures.
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