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04-17-2007, 11:53 PM | #73 |
Drives: Yaris 3dr Hatchback Join Date: Oct 2006
Location: South Carolina, USA
Posts: 255
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WELL, maybe not talking on the cell phone...but a few days ago I was browsing the internet on the interstate....maybe yes on that.
oh, and is not talking on the cell phone part of hypermilling techniques? |
04-18-2007, 01:27 AM | #74 |
Drives: 2005 Scion xB Join Date: Nov 2006
Location: The Black Hills of South Dakota
Posts: 1,059
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People fail to maintain their cars properly ,including tire pressure, and this is the reason for the focus on underinflation. If you neglect your tires, eventually the pressure will drop creating a dangerous situation. This is a COMMON problem. Overinflation is not a common problem as tires do not spontaneously jump up in pressure. Someone has to overinflate them on purpose. I'm sure after this "hypermiling" trend becomes more well known, and a few 60 PSI tires blow violently causing mayhem on the freeways, the danger of overinflation will spark a few tire pressure studies focusing on overinflation.
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04-18-2007, 11:10 AM | #75 | |
Modification Condoner.
Drives: 2007 Black Sand Liftback Join Date: Jan 2007
Location: Chicago, IL
Posts: 360
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Quote:
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Tanabe DF, Debadged, stripped, Black emblems |
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04-18-2007, 11:58 AM | #76 |
1.5L of FURY!
Drives: 2007 Yaris S Sedan, 5 speed Join Date: Mar 2007
Location: Central Cali
Posts: 13
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personally, i wouldn't put my tires past 45psi.
especially since I live in the valley where the temperature gets to 114+ degrees all summer long. |
04-18-2007, 05:03 PM | #77 |
Drives: 2005 Scion xB Join Date: Nov 2006
Location: The Black Hills of South Dakota
Posts: 1,059
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04-18-2007, 05:09 PM | #78 |
Drives: 2005 Scion xB Join Date: Nov 2006
Location: The Black Hills of South Dakota
Posts: 1,059
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This has been stated before, however, people keep making posts about the tires increase in temperature leading to over MAX pressure recommendations. The max pressure written on the side of the tire is a COLD max pressure. So, if it is 45PSI max, the tire manufacturer knows the tires will heat up thereby increasing the pressure above the max. This does not mean you have to calculate the real max pressure based on your local driving conditions and temperatures. It is recommended you check or adjust tire pressures in the morning before any substantial driving. You can set it at 45PSI. Yes, it will go above 45PSI when you drive fast or as the day gets warmer but that is already figured in.
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08-05-2007, 12:28 PM | #79 |
toyota
Drives: 2007 Yaris RS Blazed Join Date: Oct 2006
Location: toronto, canada
Posts: 3,637
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i got front tires on 44psi and back tires on 40 psi .. thats if the air pump pressure meter really is accurate..
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08-09-2007, 06:37 PM | #80 | |
Banned
Drives: 2007 Yaris LB Join Date: Mar 2007
Location: Orange County, Calif
Posts: 284
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Quote:
Did you go to college?!? BailOut is doing the right thing, and there is vertually NOTHING inherently dangereous about most hypermilling techniques. |
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08-09-2007, 09:47 PM | #81 |
Drives: 07 Yaris sedan Join Date: Jun 2007
Location: Keremeos BC
Posts: 986
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Yeah, me, too. In the old days, radials got better mileage at high pressures (smaller contact patch), better traction at lower pressures (larger contact patch). I cannot assume that the logic of this has disappeared, but I have seen no major changes in tire technology that would challenge it. I used to dump my Michelins down to as low as 15lbs for heavy snow conditions, and went where no snow tire would go!
The smaller contact patch, however, generates less heat, so it is possible that lower pressure only benefits the tire companies. I also found that higher pressures had more sidewall stability ("creep"), and gave more precise steering. But that's just my experience; I was running radials before they were even legal in some states! |
08-10-2007, 01:07 AM | #82 |
Hi!
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damn 60 psi, it must feel like you're driving a damn tank to work.
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08-10-2007, 09:44 AM | #83 |
der Zeck
Drives: '05 Audi A4 1.8t quattro Join Date: Sep 2006
Location: Toledo, OH
Posts: 5,231
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ok out of control, and not worth debating and fighting over AGAIN!!!... done
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