[Shop-talk] Caster weight capacity

[fortee9er at yahoo.com (Jorge Garcia)]

My cars range in weight from less than a ton to over two tons. Assuming that 
60% of the car's weight is in the front and the casters should be suitable for 
my heaviest vehicle - 4500lbs - then 4500*.60/8= 337.5lbs per front caster.
Does this method of determining the weight capacity of the casters make sense 
to you guys or are there other things I should consider?
Thanks
Jorge