On 8/18/2020 6:02 PM, AMuzi wrote:
> On 8/18/2020 11:26 AM, Chris K-Man wrote:
>> 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?
>
>
> Feeling?? Engineers actually know something about this.
>
> Try running a Corvair with same F/R pressure some time. Just don't try
> cornering!

Don't try cornering in a swing axle Corvair, period.