Cadillac 2010 CTS Sport Sedan Owner's Manual page 359

If you expect to drive on snow or ice
covered roads often, you may want
to get winter tires for your vehicle.
All season tires provide good overall
performance on most surfaces but
they may not offer the traction you
would like or the same level of
performance as winter tires on
snow or ice covered roads.
Winter tires, in general, are
designed for increased traction
on snow and ice covered roads.
With winter tires, there may be
decreased dry road traction,
increased road noise, and shorter
tread life. After switching to winter
tires, be alert for changes in vehicle
handling and braking.
See your dealer/retailer for details
regarding winter tire availability and
proper tire selection. Also, see
If you choose to use winter tires:
Use tires of the same brand and
tread type on all four wheel
positions.
Use only radial ply tires of the
same size, load range, and
speed rating as the original
equipment tires.
Winter tires with the same speed
rating as your original equipment
tires may not be available for H, V,
W, Y, and ZR speed rated tires.
If you choose winter tires with a
lower speed rating, never exceed
the tire's maximum speed capability.
If your vehicle has 235/50ZR18,
P235/50R18, 255/40ZR19 or
285/35ZR19 size tires, they are
classified as low-profile tires.
These tires are designed for
.
very responsive driving on wet
or dry pavement. You may also
notice more road noise with
low-profile performance tires and
that they tend to wear faster.