AboutBarry Smith Expertise I have over 30 years experience in the design, manufacturing, and
testing of tires. I have served as the technical advisor to the "800"
number. I have authored or co-authored many publications - usually
without credit. I can answer almost any technical question, but
please don`t ask me to compare brands. I probably have prejudices because of
my work experience.
Experience Member SAE (Society of Automotive
Engineers)
Member Tire Society (Tire Technical Organization)
SCCA Regional Competiton License holder
Authored many training manuals on tires, their care and use.
Expert: Barry Smith Date: 6/16/2008 Subject: tire cupping on a towed jeep
Question I tow my jeep wrangler behind my motorhome on all 4 wheels using a tow bar. After just 2500 miles I am getting uneven wear and cupping on the front tires, What can I do to prevent this?
Answer Chris,
Cupping is caused by misalignment and aggravated by insufficient inflation pressure and insufficient rotation practices.
So get an alignment. BTW, find a shop that recognizes that alignment specs are too wide as published. They should know that the alignment has to be within the inner half of the tolerance to prevent this type of wear. If they don't know this, find another shop.
