U must edit the *.cam file in your \gamedata\vehicles\your_car folder, or some subfolders, and look at the blue line:
LocalCam=NOSECAM
{
Fov=(62.500000, 62.500000)
Clear=TRUE
Color=(164, 218, 249)
ClipPlanes=(0.900000, 500.000000)
LODMultiplier=(1.000000)
MipmapLODBias=(0.000000)
Size=(1.000000, 1.000000)
Center=(0.500000, 0.500000)
Flags1=(0)
Flags2=(0)
RadiusLimits=(0.000000, 0.000000)
OrientationRate=(90.000000, 90.000000, 90.000000)
PositionOffset=(0.000000, 0.00, -1.600000) //(Left-Right, Up-Down, Back,Forward)
OrientationOffset=(0.000000, 0.000000, 0.000000)
Radius=(0.000000)