GMC TopKick 2007 Owner's Manual page 329

CAUTION:
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Without the correct wheel, you may not be
able to stop properly, and you could have
other problems like a tire air-out. You could
have a collision. If you do not go to your
dealer to get a new wheel, be sure you get
the correct one. Each new wheel should
match the original wheel in load-carrying
capacity, inflation pressure capacity,
diameter, width, offset and mounting
configuration.
Using wheels and tires with higher load-carrying
limits than the original wheels and tires does not
change the Gross Axle Weight Rating (GAWR) or
the Gross Vehicle Weight Rating (GVWR) of your
vehicle. See Loading Your Vehicle on page 233 for
more information.
Notice: The wrong wheel can cause trouble in
bearing life, brake cooling, speedometer/
odometer calibration, headlamp aim, bumper
height, vehicle ground clearance, stopping
distance and tire clearance to the body and
chassis. You could also have other problems
like a tire air-out.
Used Replacement Wheels
CAUTION:
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Putting a used wheel on your vehicle is
dangerous. You cannot know how it has
been used or how far it has been driven. It
could fail suddenly and cause a crash. If
you have to replace a wheel, use a new
GM original equipment wheel.
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