Saab: 9-5 Tire Pressures

Can anyone let me know the correct tire pressures for my '03 9-5 Aero. The
owners manual quotes 35F/33R, but the panel on the door pillar says 36F/35R
for the "light load under 100 mph" category.
Also, is there any downside to keeping the tires a little over the
recommended pressures during everyday driving? This is the first vehicle I
owned with very low profile performance tires.

TIA for any info.
Peter.

I definitely agree with running the tires a bit harder than doorplate.
First, you might go faster than the doorplate range. Second, the air
pressure should be adjusted for ambient temperature, and the
temperatures are still dropping here in the North. Third, if you get
a slow leak from something, it will give you a little more rim
protection and tire retention protection before the tire actually gets
soft.

Regarding the owners' manual v. the doorpost, in the US at least
transportation regulations make the doorpost more accurate for a given
vehicle. Can't say for sure about Oz, but with regulations being
harmonized globally, I'd expect it is safer for you to depend on the
doorpost numbers. Too bad the dealer can't clarify this for you!

My cars are different, so it wouldn't make any sense to get into a
"what's the right number" discussion with you. Just shoot for door
post plus 1 or plus 2, and get them the same left and right. Also, to
get this balanced condition, it will matter if you check the pressures
before you drive in the morning.

Ken

"Peter Wilkins" <ozemail.com.au> wrote in
message news:com...
On Sun, 21 Dec 2003 18:34:08 GMT, "Peter F" <com> wrote
:
 
Aero. The 
36F/35R 
vehicle I 
I'd tend to believe the door pillar panel before the handbook.
I've found quite a few errors in my 9-5SE handbook.

If you don't use the recommended pressures, it is far better to have
tyres slightly overinflated that underinflated. They run cooler and
deform less. However, too high and they lose grip.

After a few years experimenting I now run my 9-5SE front and rear at
38psi around town and 40psi on high speed trips when loaded for
holidays. I run Michelins but they are just low profile, not very low
profile, so my SE pressures may not be applicable to the Aero.
--
Regards,
Peter Wilkins