Originally Posted by Doug5150
Most car tires are ~30 PSI; when's the last time you inflated your car tires to 60 or 90 PSI?.....
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I'm proud to say: I haven't owned or driven an automobile in 16 years!
Furthermore, I don't believe that comparing automobile tire pressures on automobile wheels and bicycle tire pressures on bicycle rims is in any way reasonable or valid. Do your car's wheels have spokes? Do your bike's rims weigh more than your tires? Can you stand on your bike's rim? Can you plant a garden in your bike's tire?
Get real.
Or, give me a formula.