Originally Posted by
shelbyfv
I expect that most people who are concerned about a test ride are not experienced enough to make any rational judgement based on the test ride. Folks who have been riding for awhile and have experience on multiple bikes will have a good idea what they want as far as geometry, frame material, etc. Saddles, tires, stems and bars are all easily changed and would not be a reason to choose one bike over another.
Depends on the dealer. I've had more than one tell me they couldn't even change out a stem. I wanted to buy a bike, not a partial bike kit. Other dealers are more reasonable, and they're willing to swap things out; but that usually happens after the test ride, or at least they'll put the rider on a trainer.