Wheels And Tires - Aston Martin DB 9 2010 Manual

Wheels and Tires

Tires of the correct type, manufacturer and dimensions, with correct
cold inflation pressures are an integral part of every vehicle's design.
Regular maintenance of tires contributes not only to safety, but to the
designed function of the vehicle.
Road-holding, steering and braking are especially vulnerable to
incorrectly pressurized, badly installed or worn tires.
Tires of the correct size and type, but of different make have widely
varying characteristics.
Only install tires approved by Aston Martin (Refer to 'Tires', page
12.6).
11.14
Tire Pressures
Make sure that correct tire pressures are carefully maintained (Refer
to 'Tires', page 12.6). Road holding, steering, braking and tire wear
are especially vulnerable to incorrect tire pressures.
Check tire pressures regularly and before starting any journey. Re-
inflate any tire with a low pressure at the earliest opportunity.
Pressures increase slightly when the tires are hot. For an accurate
reading, pressures should be checked when the tires are cold. After
adjusting the tire pressures, make sure that the valve caps are securely
replaced to provide an additional air seal and to prevent the ingress
of dirt.
Tire Service
The recommended tires for this vehicle are asymmetrical and must be
installed to the wheel with the tire mark 'Outside' on the outside of
the wheel rim.
They are also of different sizes on the front and rear axles, therefore
complete wheels cannot be swapped from one side of the vehicle to
the other or between axles.
Because of the high performance potential of this vehicle,
Aston Martin strongly recommend replacement of any damaged or
worn tire.