|
|
04-12-2007, 03:20 PM | #1 |
Drives: Sedan Join Date: Mar 2007
Location: Wisconsin
Posts: 37
|
Tire Pressure Max
I heard that inflating the tires to max pressure will increase stability and I would like to try that out - does anyone know what the tire pressure max is on the P185/60R15 that come with the car?
|
04-12-2007, 03:32 PM | #2 |
JOE GIRTH
Drives: YARIS 3DOOR Join Date: Feb 2007
Location: ROCKLAND TOYOTA/SCION
Posts: 369
|
44 LBS....
__________________
http://www.carid.com/toyota-accessories/ site has a FEW interesting yaris items..... |
04-12-2007, 03:32 PM | #3 |
It says it right on the tire
|
|
04-12-2007, 03:40 PM | #4 |
Steals terrorist's lunch
Drives: 2007 Yaris Liftback Join Date: Mar 2007
Location: Reno, Nevada, USA
Posts: 1,299
|
We hashed this all out in another thread that you can search for if you'd like deeper information, but here's the skinny:
Max sidewall pressure is the *minimum* pressure you should use on the Yaris. Several of us on CleanMPG.com run the RE92's at 60 PSI and have gotten not only nice MPG increases (due to lower rolling resistance) but much greater life out of the tires (the first of us to go to 60 PSI just hit 85,000 miles on the original tires - that's unheard of at 32 PSI). Toyota's recommendation of 32 PSI is based solely on a comfortable, cushy ride rather than anything to do with performance, stability, tire wear, etc.
__________________
- Brian Share the Road I often carry 2 carpool passengers and mountain bikes or snowboards/skis over a 4,500 foot elevation difference. Click the graphic above to see my detailed mileage logs. |
04-12-2007, 05:13 PM | #5 | |
The Beautification of Car
|
Quote:
If it true i will do it for sure man. |
|
04-12-2007, 08:45 PM | #6 |
Super Moderator
|
|
04-12-2007, 05:34 PM | #7 |
Cybernetic Magician
Drives: 2007 Yaris Liftback Join Date: Mar 2007
Location: Florida
Posts: 56
|
Im running 50PSI right now.
|
04-12-2007, 05:41 PM | #8 |
Drives: 07' Yaris Liftback - silver Join Date: May 2006
Location: Springfield, Mass
Posts: 475
|
what kind of MPG increases are you seeing running at 50 or 60 psi? (up from stock)
|
04-12-2007, 06:22 PM | #9 |
Lonesome Cowboy
Drives: 2007 WHITE HATCHBACK Join Date: Feb 2007
Location: Inner City, Dallas
Posts: 2,995
|
There is a "thingy" in your glove box called an Owner's Manual, comes "free" with the Yaris. Try opening it up. Theres lots of words in there and "stuff"
__________________
SPONSORED BY |
04-12-2007, 06:41 PM | #10 | |
Steals terrorist's lunch
Drives: 2007 Yaris Liftback Join Date: Mar 2007
Location: Reno, Nevada, USA
Posts: 1,299
|
Quote:
If you hypermile then the benefits shoot through the roof. For example, on my commute home there's a section of the mountain road that is just very slightly downhill for almost a mile. I used to have to use fuel in this area but with the tires at 60 PSI I can turn off the engine (and then go back to Ignition II to keep PS/PB for a while) and coast that entire section without dropping speed. I can pull a similar stunt for about another mile at the bottom of the mountain after going through the clover leaf on-ramp. I can use it twice again in my subdivision for another half mile each time after accelerating to 40 in a 45 MPH zone. I can stealth coast from the main subdivision road through 4 90-degree turns and right up my driveway and into my garage.
__________________
- Brian Share the Road I often carry 2 carpool passengers and mountain bikes or snowboards/skis over a 4,500 foot elevation difference. Click the graphic above to see my detailed mileage logs. |
|
04-12-2007, 06:48 PM | #11 |
Drives: 2005 Scion xB Join Date: Nov 2006
Location: The Black Hills of South Dakota
Posts: 1,059
|
Not to bring you guys down, but, this is a really bad idea. Max pressure is called that for a reason. You do know your tires heat up with highway speeds so even putting them at 44 means they are running far higher than that with sustained speed. Setting them at 60PSI means they could go over 70 with summer heat and fast driving. Blow-out time!
|
04-12-2007, 06:56 PM | #12 | |
Steals terrorist's lunch
Drives: 2007 Yaris Liftback Join Date: Mar 2007
Location: Reno, Nevada, USA
Posts: 1,299
|
Quote:
I commute over a mountain every day in snow or sun at 60 PSI without issue. As I mentioned earlier a fellow hypermiler who does a lot of highway driving just hit 85,000 miles on his RE92s, which is literally impossible at 32 PSI. We are just 2 out of a pool of folks that have been running at 60 PSI for quite some time now not only without issue but with several tangible benefits.
__________________
- Brian Share the Road I often carry 2 carpool passengers and mountain bikes or snowboards/skis over a 4,500 foot elevation difference. Click the graphic above to see my detailed mileage logs. |
|
04-12-2007, 07:16 PM | #13 |
Drives: . Join Date: Feb 2007
Location: .
Posts: 1,931
|
I'm with Peter on this one. Max pressure is listed so that you know what NOT to inflate above, for safety reasons. You may indeed get better mpg, but other things like braking and cornering will be adversely affected, and should you have an accident through a blow-out, and it is found all your other tires are over-inflated, you will have a hell of a fight with your insurers.
Would you ride with 11 other people in an elevator rated for 6, just because it saved energy going down? I thought not..... Getting another 2 mpg out of a car that is already capable of over 35 is not enough of an incentive, IMNSFHO |
04-12-2007, 08:41 PM | #14 | |
Steals terrorist's lunch
Drives: 2007 Yaris Liftback Join Date: Mar 2007
Location: Reno, Nevada, USA
Posts: 1,299
|
Quote:
You have a valid point about insurance companies because they are generally uneducated about such matters. I do not bow to a lack of education... I educate the uneducated.
__________________
- Brian Share the Road I often carry 2 carpool passengers and mountain bikes or snowboards/skis over a 4,500 foot elevation difference. Click the graphic above to see my detailed mileage logs. |
|
04-12-2007, 09:08 PM | #15 | |
Drives: . Join Date: Feb 2007
Location: .
Posts: 1,931
|
Quote:
"Inverse"? Is that the same as "opposite", but for edjimacated folks? |
|
04-12-2007, 08:51 PM | #16 |
Lurker supreme!
Drives: old and boosted! Join Date: Nov 2006
Location: Ottawa, ON, Canada
Posts: 792
|
Might be an '06 if its from Canada... we got them earlier than you guys.
But wow... 60 PSI... thats nuts. I won't feel so bad about overinflating a little bit now. (also the first time I'ver heard the term hypermiler!)
__________________
2006 Red Blitzed RS 5-door |
04-12-2007, 09:20 PM | #17 |
der Zeck
Drives: '05 Audi A4 1.8t quattro Join Date: Sep 2006
Location: Toledo, OH
Posts: 5,231
|
you guys running 60 psi are not the brightest bulbs in the pack are ya... expacially on the shit ass stock potenza that came stock on the car, 1st the car has to ride like a brick, 2nd the is a safty issue, by over inflating the tires you risk seperating the tire and at that pressure it would most likely blow out.
general rule of thumb, over inflating is not a good idea BailOut, I think you would be safer doing a "bailout" on the freeway than driving with 60 psi and for that guy that got 85k on his stock potenza's... I am sure he had plenty of tread left.... on the outside edge of his tire, there had to be non left on the inside at that psi, and plus the increased psi from heating them up on the e-way in NV (1psi per 10 deg)
__________________
|
04-12-2007, 09:26 PM | #18 |
vroom vroom
Drives: lil red 5-door Join Date: Sep 2006
Location: Bangkok, Thailand
Posts: 7,744
|
BailOut, I think you need to procure some tread pictures or other proof if you wanna continue with this
__________________
The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ... |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Why does Tirerack reccomend 185/50R15s for seeminlgy ALL of their 15" rims? | St_G | Wheels, Tires and Suspension Forum sponsored by The Tire Rack | 15 | 03-16-2011 06:29 AM |
Tire Pressure and Gas Economy | KittenRD | General Yaris / Vitz Discussion | 11 | 01-25-2007 10:54 PM |
Tire Pressure | slvryaris | Wheels, Tires and Suspension Forum sponsored by The Tire Rack | 8 | 11-05-2006 12:37 PM |
stock tire pressure... | argylesocks | Wheels, Tires and Suspension Forum sponsored by The Tire Rack | 11 | 09-16-2006 12:28 AM |
The Tire inflation debate... | Tankota | General Yaris / Vitz Discussion | 20 | 06-01-2006 07:09 PM |