From: xenolith@optusnet.com.au   
      
   On 19/8/20 9:43 am, thekmanrocks@gmail.com wrote:   
   > AMuzi:   
   >   
   > re: Corvair   
   >   
   > The Corvair had a Front/Rear weight difference that   
   > definitely warranted the big difference between   
   > recommended front and rear cold tire pressures.   
   >   
   > The cars I'm talking about are somewhere in between   
   > that extreme, and the other: rear- and all-wheel drive   
   > sports sedans with almost no(less than 55/45) front-rear   
   > weight bias.  The last time I checked, a typical BMW   
   > F/R weight split is like 51/49%. Yet recommended   
   > front/rear pressures differ by 5psi.   
   >   
   > My Honda Accord, for example, is F/R: 54/46% axle   
   > weight split.  Some 'econoboxes' venture toward 60/40,   
   > yet for the Accord and those cars, a single pressure   
   > figure, for all tires, is specified on the door frame placard.   
   >   
   Varying the tyre pressure will vary the slip angles at which the tyres   
   run. The *specification* of that variation, ie. different pressure F &   
   R, will ensure the car runs understeer rather than oversteer.   
   Manufacturers design cars to oversteer and, depending on the suspension   
   design, tyre pressure variation is the way to ensure it.   
      
   --   
      
   Xeno   
      
      
   Nothing astonishes Noddy so much as common sense and plain dealing.   
          (with apologies to Ralph Waldo Emerson)   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)