04-29-2012, 10:40 PM
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#1 (permalink)
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EcoModding Lurker
Join Date: Nov 2009
Location: Lacey, WA
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Pc3 - '12 Toyota Prius c 3 90 day: 49.3 mpg (US)
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Unscientific observation.
Last evening, I took my brand new Prius c on a round trip of about forty miles. Averaged 56.1 mpg per the display. That was on factory tire pressures.
Same time this evening, I took the exact same route. Today I set my tire pressures at 40/38 and installed a lower grille block. Ran the same 60mph on the freeway and speed limits elsewhere. Conditions were the same. Temp on SG ranged between 186 and 195. Average for the same trip was 60.2 mpg per the display.
Not very scientific, but interesting to me.
All the best.
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04-29-2012, 11:19 PM
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#2 (permalink)
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Master EcoModder
Join Date: May 2008
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What is the stock tire pressure, and what is the sidewall maximum?
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04-29-2012, 11:25 PM
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#3 (permalink)
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EcoModding Lurker
Join Date: Nov 2009
Location: Lacey, WA
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Pc3 - '12 Toyota Prius c 3 90 day: 49.3 mpg (US)
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Neil, the factory is 35/33 and the max pressure is 55.
All the best,
Graeme
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04-30-2012, 09:06 AM
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#4 (permalink)
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Rat Racer
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Quote:
Originally Posted by graesack
Not very scientific, but interesting to me.
All the best.
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So lose some air, yank the grille block and do it again. A-B-A proves the mods and makes you a scientist. Put it back together for A-B-A-B and you're saving fuel scientifically!
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Quote:
Originally Posted by sheepdog44
Transmission type Efficiency
Manual neutral engine off.100% @∞MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%
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04-30-2012, 10:17 AM
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#5 (permalink)
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EcoModding Lurker
Join Date: Nov 2009
Location: Lacey, WA
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Pc3 - '12 Toyota Prius c 3 90 day: 49.3 mpg (US)
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I didn't have time to do A-B-A. Just an observation, not a conclusion.
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04-30-2012, 12:35 PM
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#6 (permalink)
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EcoModding Apprentice
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graesack
Do you have the 15" or 16" wheels? I need to know because the 16" wheel uses the same tire size as my Fiesta. I have not been able to find out what tire they run and if it is a LRR. My factory Hankooks are kinda crappy, so I'm looking to upgrade.
Thanks,
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04-30-2012, 12:55 PM
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#7 (permalink)
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Pizza Guy w/ a ZX2 S/R
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i just put a set of LRR tires on my ZX2 n noticed an immediate improvement so i wish you the best of luck w? ur fiesta
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Believe it or not my goal is higher MPG, if I get more HP out of it, so be it.
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04-30-2012, 05:35 PM
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#8 (permalink)
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EcoModding Apprentice
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As far as I know their is not a LRR in my tire size, but if Toyota is putting the same size tire on a Prius c I bet it is LRR.
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04-30-2012, 05:42 PM
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#9 (permalink)
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Administrator
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Does the SFE Fiesta run 15" wheels?
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04-30-2012, 08:00 PM
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#10 (permalink)
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EcoModding Lurker
Join Date: Nov 2009
Location: Lacey, WA
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Pc3 - '12 Toyota Prius c 3 90 day: 49.3 mpg (US)
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FXSTi, mine are 15s. Goodyear Assurance.
All the best,
Graeme
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