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: 6/15/2008 Subject: Tires 4 wheel drive
Question I have a Jeep Cherokee Laredo 2003 that needs new front tires. The salesman said that I need to buy 4 new tires at a time for a 4 wheel drive. Is this true? The back tires are fine.
Answer Julie,
The overall diameter of tires is important for All Wheel Drive and 4X4's because differences in diameter will cause the drivetrain to bind up - the front is traveling a different speed than the rear.
So unless you are willing to risk a transfer case failure, replacing in tires in sets of 4 is your only option.
