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post #11 of 15 (permalink) Old 03-17-2008, 06:53 PM
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Default Re: Tire Pressure & Mileage

That's right and Toyota engineers for overall handling, traction and safety suggest on your door sticker to inflate 35 frt/33rear.
This 44/42 figure comes for an extra MPG and riding on rails handling. (you could develop "rattles" in the dash board at the higher pressures)



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post #12 of 15 (permalink) Old 03-18-2008, 10:33 PM
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Default Re: Tire Pressure & Mileage

Quote:
Originally Posted by hyperion
That's right and Toyota engineers for overall handling, traction and safety suggest on your door sticker to inflate 35 frt/33rear.
This 44/42 figure comes for an extra MPG and riding on rails handling. (you could develop "rattles" in the dash board at the higher pressures)

Heck, if I wanted a mushy ride and crappy mileage, I would have bought a Lincoln. Pump it up and save a soldier or two.

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post #13 of 15 (permalink) Old 03-19-2008, 10:01 AM
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Default Re: Tire Pressure & Mileage

You really "got to be kidding." There is absolutely nothing you can do to get a "soft" ride" in the prius.
I have heard of no other car out there that stipulates more than 30 psi in the tires. The fronts in my Highlander stipulate 28,, as do the fronts in my Cadillac. Both, front wheel drive.
For "maximun" loads in my old pickup, the manual states to pump up the tires to 30 front and 28 rear and thats RWD. (Otherwise for handling purposes, the door sticker stipulate 26/24.
The factory figures for the Prius are way above standard to begin with. Individual owners have opted for the much higher pressures and If I lived in an Area like Arizona, Texas ect; where high summer temperatures are the norm I'de be darn carefull what I put in my tires.



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post #14 of 15 (permalink) Old 03-19-2008, 10:47 AM
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Default Re: Tire Pressure & Mileage

When did they change the Highlander to a front wheel drive vehicle?

(Oops) Just realized that I was thinking of the 4Runner. Sorry.
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post #15 of 15 (permalink) Old 03-19-2008, 03:37 PM
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Default Re: Tire Pressure & Mileage

The higher pressures are actually safer during hot summer weather, as there is less sidewall flex and generated (internal) heat. Lower pressures (in the mid-20 psi range) actually contribute to belt slippage, tread separation and blowouts. Next time you drive through the desert areas, just look at all of the dead "(alli)gators" on the our highways.

After the Firestone problem, ADOT (Arizona Dept of Transportation; a.k.a, highway patrol) put out a statement that the most common cause of tire failure in Arizona was underinflation, and told everyone to pump up their tires.

I run 46/44 in my HydroEdges on my 2002 Prius, and the 1978 Chevy pickup (that has load range E tires rated at 80 psi) have 55/50 in them. Even the pickup gets better mileage and more even tirewear at the higher pressures (if you can call 8 mpg versus 7 mpg an improvement, though that's around 14%). I even run 65 psi (the max) in the tires on our Airstream.
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