cheers mate,
well with that photo it was shot with my 50mm prime, and it was literally a case of playing around with the settings ended up using :
F 1.8, 1/800, ISO 100
I wanted the wheel to be the main focal point so i used a low F number sure if you look at the exif stuff it will tell you and then just adjusted teh shutter speed until i got the right sort of lighting trail and error really and then just boosted the colour in PS and sorted the levels out
ive just read a book i bought called 'how to digitally photography cars' really helpful loads of pointers and tips and basicall got me thnking alot more about what im doing
im trying to get it 'right in camera' now as much as possible