James D'Andrea wrote:
Be sure to follow your tire manufacturer's
recommendation. 50 psi for my Goodywar Marathon Radials. Run them on
my boats and the glider trailer. Also, be very aware and critical of
the sounds and feel of the trailer. Unusual vibrations, noises and
handling almost always foretells tire failuer.- Hide quoted text -
- Show quoted text -
My understanding is that the correct tire pressure is recommended by
the vehicle manufacturer and not the tire manufacturer. On a car, the
correct tire pressure can be found in the operating manual or on the
vehicle identification placard located in the driver's side door
frame. The tire pressure on the tire sidewall is the pressure to
carry the max load that the tire can handle. Following this
reasoning, the correct tire pressure on the trailer should be the one
the trailer manufacturer recommends even if the tire has a higher
pressure listed on the sidewall.
This is a sensible approach to setting the tire pressure, as long as you
are using the tire specified by the trailer manufacturer, AND you are
loading the trailer to the same weight. People sometimes have problems
getting the identical size (or getting the quality they want), or they
didn't like how the original size performed (stability, speed rating,
longevity), so they end up with a different type or size of tire.
Following the tire manufacturer's recommendations does not mean using
the max pressure listed on the sidewall, but using the inflation
pressure from their load tables. Even that pressure can be properly
exceeded in some circumstances; e.g., ST tires can be run be used over
their nominal 65 mph rating (up to 75 mph) by increasing the pressure
another 10 psi (assuming the wheel and tire are rated for the higher
pressure).
--
Eric Greenwell - Washington State, USA
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