Re: [AMC-list] Cars, Clunkers and Greenup

[Frank Swygert <farna@xxxxxxx>]

Read the fine print along with the pressure on the sidewall. It will state that the maximum weight load for the tire is at the printed maximum pressure. That might not be the best pressure for the vehicle. I'd use the inflation sticker as a guide rather than the pressure on the tire, but definitely look at the tire first. Don't want to put 42 psi in if it says max load rating is at 36 psi (or whatever lower rating). NEVER inflate higher than the sidewall pressure! That's why is says MAXIMUM...

A good point was brought up though. If the tires are a different size than what came on the vehicle, the pressure won't be "correct". A smaller tire will generally require more pressure to bear the same load, a larger tire a little less. I don't know how to tell what pressure should be -- the above rule of thumb is far from set in stone. Once you change tire sizes you're sort of on your own. Experiment a bit, and watch the tires. Under inflated wear the edges more, over inflated wears the center. I start with the door sticker or owners manual recommendation, then adjust a little from there. Your results may vary... 

--------
Date: Sat, 25 Jul 2009 10:26:28 -0400
From: Matt Haas <mhaas@xxxxxxx>

It's on the tire inflation sticker on the driver's side door post. Max 
tire pressure on the tire itself is higher. I did try running higher 
once or twice but all I noticed was a harder ride for not much 
difference in fuel economy.

Matt

On 7/24/2009 9:29 PM, Ken Ames spouted this sage advice:

> > Is that 42psi in the owner's manual or the tire sidewall?
> > 
> > Ken
> > 
> > Quoting Matt Haas <mhaas@xxxxxxx>:
>
> >>
> >> BTW, make sure the tires are properly inflated. 32 PSI isn't enough. The 
> >> spec is 42 PSI and it will make a *huge* difference in gas mileage and 
> >> ride quality.
> >>
--
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)

_______________________________________________
AMC-list mailing list
AMC-list@xxxxxxxxxxxx
http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com