<VV> Tire Pressures - possible Corvair

[Sethracer at aol.com]

I have several newer cars, besides my two Corvairs.Two of these  are newer 
GM cars and have tire pressure monitoring systems that are  factory 
installed. These are cars which are driven everyday. The last couple of  years I 
have attended the SEMA show -all things car/truck related. There are now  
several aftermarket tire pressure warning systems available. Installation  
involves replacing the fill-valve cores on the wheels, meaning the tires have to  
come loose, and a monitoring pick up is located in the dash area. But they 
seem  to work well and do, indeed track the cold pressures overnight and the 
warm up  during the driving of the car. The warning system in my Corvette 
warned me of a  catastrophic puncture of a tire on the freeway, giving me 
options that just  wouldn't have been available until the tire was at 0 pressure 
and the handling  disintegrated enough to let me know. 
 
PS - both cars have OnStar service from GM. Onstar regularly monitors  
systems on the cars and routinely sends me an e-mail telling me that a tire is 1 
 psi low. I have concluded that it always checks in the cold middle of the  
night when Boyle's law has proven correct again. 
 
- Seth Emerson
 
 
In a message dated 12/8/2012 11:06:29 A.M. Pacific Standard Time,  
hawknest6 at msn.com writes:


I  concur with Harry & Frank about tire psi lowering as ambient temperature 
 lowers. 
I lost a future brother in law due to this. 
The aluminum  factory rims on his car had actually "shrunk" enough that the 
tire to rim seal  was compromised, thus allowing the Rt. Frt. tire to 
completely "roll" off the  rim & flipping the car. 
He was crushed under the car when he was  found. 
Everyone in my family knows the importance of tire psi.  
Additionally every car we own has a set of steel rims for winter use.
I  check psi's EVERY time I can  !!

Tim
Decatur,IL.