Aston Martin DB 9 2010 Manual page 107

Wet Conditions
When driving in wet conditions, water can build up under your tires
so that they ride on a layer of water. This is called aquaplaning or
hydroplaning. When this happens, you have little or no control.
Aquaplaning is more prone to happening at higher road speeds if
there is a lot of water on the road and particularly if the tires are also
under inflated or approaching minimum tread depth.
It is important to take bends or curves at a safe, reasonable speed,
particularly when driving on wet or slippery road surfaces.
Slow down when it is raining.
Track Days
Before using this vehicle on Track Days contact your Aston Martin
Dealer for vehicle set up, service parts and recommendations.
Driving Through Deep Water
If in any doubt whether to drive through deep water, always
take the side of caution to avoid potentially costly damage to the
vehicle's engine or other essential systems.
If driving on flooded roads, through deep or standing water is
unavoidable, proceed with extreme caution, especially when the
depth is not known. Never drive in water deeper than the lower edge
of the front bumper. Water can be splashed up into the engine air
intakes located in the front upper grille and cause extensive damage
to the engine or the vehicle may stall.
When driving through water, traction or brake capability may be
limited. Once through the water, always dry the brakes by driving
slowly while applying light pressure on the brake pedal.
Waves caused by other vehicles or natural causes can also splash
water in the engine air intakes.
Running-In
This vehicle is fully hot tested during manufacture and no special
running-in procedures are necessary. Nevertheless it is prudent to
limit engine loads (e.g. by accelerating gently and by using lower
gears on steep hills or when negotiating tight turns) during the first
1,000 mile (1,600 km).
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