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Re: Tire Pressure for V70 AWD?[850/1995] posted by davespeed at bigfoot dot com on
Thursday, 20 August 1998, at 3:03 p.m.
My '95 854T says 36/36 (loaded) and then, reading down, 32/29.
Michelin 'verified' for me that my 205/50-16 MXMs could only
protect themselves if they had at least 29 psi cold in them.
So I never tried going below 28 psi.
I'm often alone in the car, and 32/29 was for 2 in front and one
in back. But 31/28 is just too low, even with just one occupant.
I've found it very beneficial to try to stay close to the 3 psi
differential recommended as the "optional" pressure as I've tried
different pressures, in order to preserve the car's basic
handling characteristics.
With the cruel Sport (sic) Suspension (sic) my car came with,
32/29 - 33/30 was the best I could do, once the front sway bar
bushings ruptured. Since I got a working suspension, I've had
to tune the MXMs to the suspension speed requirements of the
Bilsteins, and found the middle of the window to be around 33.5/30.5
psi. It remains to be seen what it'll take with my 195/60-15 Winter
Performance tires.
I got well over 30K miles out of the OEM MXMs, slightly worn more
in the center of the tread, but I'd run them at around 38 psi front
for a few thousand miles, while the front sway bar bushings were still
holding the front of the car up. So my settings stood the test of
time. Keep in mind that air temperature, pavement temperature, driving
speed, and vehicle load all affect tire pressures/requirements. Here in
Colorado, with our typical 30 dF daily/nightly ambient temperature
swings, it's not practical to have the tire pressures always optimal.
If you have a tire tread depth gauge, you can tell by 5000-10K
miles whether or not the center of the tread is being pushed out (not)
far enough by (in)sufficient pressure. The idea is to get the
entire width of the tread to share the load (& thus wear) evenly.
- Dave, '95 854T, 67K mi