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   rec.autos.tech      Technical aspects of automobiles, et. al      117,728 messages   

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   Message 115,929 of 117,728   
   Chris K-Man to All   
   Split/Different Front and Rear Cold Tire   
   18 Aug 20 09:26:37   
   
   From: thekmanrocks@gmail.com   
      
   Split Cold Tire Pressures: Front-to-Rear   
      
   I understand the technical reasons for why some car makers specify different   
   cold tire pressures for the front and rear axles of certain models. My   
   question concerns those vehicles (except for the obvious: large SUVs and work   
   vans) for which different    
   pressures are specified, vs vehicles for which a single cold pressure is   
   recommended all around(all four wheels):   
      
   IE: Makes and models with less of a Front/Rear GAWR(Gross Axle Weight Rating   
   ie: less than 55/45) - Audi, BMW, Mercedes, Subaru, etc., might specify up to   
   a 5psi difference for the Front vs Rear axle pressures, where as makes with a   
   significantly higher    
   Front/Rear weight split(60/40) - Chevrolet, Ford, Honda, Hyundai, Toyota,   
   etc., recommend a single pressure   
   value for front and rear Axle - in particular front-wheel drive models.   
      
      
   Typical late-model European sports sedan or wagon recommended cold tire   
   pressures: F/R: 32/36psi   
      
   Typical late-model domestic or import front-wheel drive sedan or wagon cold   
   pressures: F/R: 30 to 36psi, all tires.   
      
      
   My theory: The former are built for a more discriminating, enthusiast driving   
   demographic whom will pay more attention to such things as different   
   front/rear axle tire pressures, while the latter are built for the blue-collar   
   masses, whose main priority    
   is economical transportation in reasonably well equipped, reliably built   
   vehicles, and live a busy lifestyle where it is easier to remember one PSI   
   number - a compromise I'm sure - to set all of their tires to.   
      
   What's your feeling behind this difference?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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