I have a 2004 Tacoma double cab. I try to keep the tire pressure between
32psi and 35 max, more towards the 35. I'm trying to get the best gas
mileage out of it but only have been getting 17mpg max. That is combo
driving, more city though. So is it better to run more towards the 35 mark?
The sticker says something like 26psi front and 29 rear. Wouldn't my mileage
go way down if I followed those numbers? The tire says 35 max. Thanks!

I think the rating on the tire is for the max. safe psi and the vehicle rating
is the acurate one to follow. The lower pressure will create more
drag/traction which will use more fuel.


"Facts are stupid things." -- Ronald Reagan, 1988, a misquote of John Adams,
"Facts are stubborn things."

You will wear your tires out prematurely by over inflating them, not to
mention the safety factor, (less traction)

--
Bill
Chesapeake, Va


"John Smith" <someone@microsoft.com> wrote in message
news:1096612792.413349@cswreg.cos.agilent.com...

"IBNFSHN" <wrh-lbh@cox.net> wrote in message
news:%Of7d.2757$TY2.1647@lakeread04...
manual or follow the tire instructions?

I just settle for 30 psi all around and I've never done worse than 19 mpg in
my 4x4 extra cab w/ manual trans. I get 22 mph on the highway. I'm running
Bridgestone Dueler Revo's.

"John Smith" <someone@microsoft.com> wrote in message
news:1096612792.413349@cswreg.cos.agilent.com...

That doesn't apply anymore to modern radial tires, only to old school bias
ply tires. You should have no uneven treadwear if you run them up to the max
pressure on the sidewall, and even if you over-inflate them a little, you
won't get a center buldge.

The recommended psi is usually a compromise between gas mileage, ride
comfort, and handling. Play around with different pressures to find out what
you like best. I prefer my LT tires on my Tacoma at 40psi front, 35psi rear.

"dave" <dkoffmanxspamx@cox.net> wrote in message
news:C2q7d.4100$mS1.1983@fed1read05...
Wrong. It has nothing to do with tire construction. It is a function of
air pressure and load capacity of the tire.

You should have no uneven treadwear if you run them up to the max
If you over-inflate any tire it will wear out in the center first. You
will also lose a little traction because you only have contact in the center
of the tread.

You may not notice this if you buy cheap tires for your car. Most tires
are capable of supporting much more weight than the vehicle is rated at.
This is the main reason why you don't need to inflate your tires to the max
pressure on the sidewall. Unless you are using the vehicle fully loaded all
the time you should not need to inflate to max pressure. You should inflate
your tires to a pressure that gives even tire wear across the tread. If the
tires are wearing in the center they are overinflated, reduce the pressure a
little. If the tires are wearing on the edges the are underinflated, add a
little air.


Tire pressure depends on tire size and load rating. I would say that the
pressures you are running sound too high. I have a Tacoma Xtra cab with 31 x
10.50 - 15 tires. The max pressures I can run are about 35 front and 30
rear with just a slight wear in the center on the tread. I usually run 33
front and 28 rear. These tires have a max pressure rating of 50 lbs.

IBNFSHN wrote:
Not necessarily so, I did an "experiment" with a set of tires on my
daily driver and found very little difference on inflation pressure and
tire wear in the two pressures I used:
http://www.4crawler.com/Diesel/Tires...roperInflation
I also found improved traction at the higher air pressure on pavement.
In fact is was the squealing of the tires in even a moderate turn that
finally led me to look at the sidewall and find that they were a 44 psi
max. taire, not a 36psi like I was used to.

All these factors can vary with vehicle weight, wheel and tire width,
and driving conditions.

--
Roger

On Fri, 1 Oct 2004 21:23:01 -0700, "dave" <dkoffmanxspamx@cox.net>
wrote:

Change "won't" in that last sentence to "much less pronounced". You
can still get some excess center tread wear from overinflation, but
the steel belts almost force the tire to keep the optimum shape. And
if you go for rock hard tires (60 PSI instead of 32) you'll blow the
sidewall out first.

Check with your tire dealer and get the Loading and Inflation chart
for your exact tires.

You can always go higher (up to the limits on the sidewall) but do
not go under the minimum pressure for the load, or the tires can
overheat and fail catastrophically - ask Ford Explorer owners (or
their heirs) about that one. Ford specified a way-too-low tire
pressure to deliver better ride comfort, and then people didn't check
their pressure regularly and let them go even lower...

--<< Bruce >>--
--
Bruce L. Bergman, Woodland Hills (Los Angeles) CA - Desktop
Electrician for Westend Electric - CA726700
5737 Kanan Rd. #359, Agoura CA 91301 (818) 889-9545
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