firstly, have the wheels been balanced??? i presume they would have. if not, you need to get this done.
as regards to tracking, this is not the best method for car wheel allignment. you really wanna have a full geometry check. search the forum for 'geometry'......there's loads of info about it. i had mine done by nottingham 4 wheel car allignment and the difference is amazing.
if the car has already had a geometry check, but with 17" alloys.....you will need to get it looked at again due to the increase in wheel size.
hope that helps :D
rob
thanks,
it a bummer because i was told by the shop (where i bough my alloys and tyres) that you just put the wheels straight on without any servicing and drive because the tyres were already on the alloys.
do i still go for the geometry check?