To fix anything
instantly on the car when in the pits (even when your mechanic
says it cannot be fixed), press "f" (refuel) for a second when
the engine is not running and the handbrake is on.
Hint for good starts. If you can see the lights at the start, do
not wait for green, but accelerate as soon as the lights turn to
amber. With this you can easily gain a few positions.
If you are starting at the back of the grid at Silverstone,
bypass the traffic through the pit lane.
To be able to race on the test track, open up the !Saloon
directory, and go into the directory "DISC2". Open the directory
"!SILVER". Rename "DATA" as "DATA2" (as a backup for when you
want to reverse the effect). Open the directory "!TESTTRACK" and
copy "DATA" into "!SILVER". Now run the program and select
Silverstone as the current course. When you race you will in
fact be on the test track.