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   7a65d975   
   From: d1dee284ea71c1e7105437203dbb8c60@example.com   
      
   Because many operators feel that "more is better".  More air in the tires, a   
   brighter TV picture, etc.   
      
   I myself allow up to 1-2psi above the pressure listed by the car mfg,   
   particularly for winter.  But no more.   
      
   I sometimes wish that tire mfgs would leave the maximum inflat. value off the   
   tire sidewall, to discourage operators from referencing it when maintaining   
   their tires.  That maximum value just provides a "canvas", of sorts, for a   
   wide variety applications.   
     The same make and model of tire, with a max. inflat. value of 51psi, might   
   see service under anything from a Ford Fiesta to a large Honda Pilot.  Of   
   course, the size and aspect ratio of that make & model tire will be different   
   for those two examples,    
   as well as the cold inflation pressure specified for each.   
      
   It's also critical to follow, at least closely, any 'offset' pressure   
   requirements, EG, the GM Corvair, in its day, specified an 11psi offset from   
   front to rear cold inflation(F: 15psi, R: 26).  Those numbers represent values   
   suitable for the non-radial    
   bias ply tires of 50-60 years ago.   
      
   Today, many performance-oriented vehicles, such as from Porsche, BMW, and even   
   Volvo, recommend different front and rear cold pressures.  Those pressures   
   were arrived at via hours, and even weeks, of combined calculations, road   
   tests, tread wear and    
   pyrometer analysis, coupled with the goal of arriving at  pressures that are   
   the best compromise between load capacity, handling, and comfort.   
      
   Varying from those pressures, EG: inflating all four tires to 40psi when only   
   34 might be specified in front, and 38 in back, or, inflating more than 2psi   
   over or under the pressures in general, EG: 30 or 40psi on a vehicle calling   
   for 33psi at all four    
   corners.   
      
   Tires manufactured since 2000 are among the most advanced and safest in world   
   automotive history, and are quite resilient and forgiving of even egregious   
   pressure variations, up to 10psi above or below vehicle requirements, short   
   term.  And I emphasize    
   short term, because, not just for wear to the tires themselves, but for   
   reasons of vehicle safety and handling, such pressures should be corrected   
   within a reasonable time of being noticed.   
      
   --   
   For full context, visit https://www.motorsforum.com/tech/tire-pr   
   ssure-77070-.htm   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)