Alignment settings that work on one vehicle may not work on another, so there are no rule-of-thumb wheel alignment specs. Front wheel drive vehicles usually require different settings than rear wheel drive vehicles. Things such as Vehicle weight, chassis design, chassis loading, tire size, driveline configuration and intended use all affect the factory wheel-alignment settings.
Vehicles that are often used with a heavy load are going to not sit well if aligned when the vehicle is empty.
Four-wheel alignment has become much more commonplace in recent years, but there are still those who won`t align all four wheels because the customer doesn`t want to pay [extra" for a four-wheel alignment. Having the rear wheels aligned properly is just as important as the fronts.
It is a fact, the shop who first measures the alignment angles of a vehicle will typically align it. If you can show the customer that they need the alignment, then they will most likely buy it from your shop. Using newer alignment technology makes it faster than ever to measure alignment angles. This can make selling alignments more productive and profitable.
A test drive can reveal many problems that would be otherwise overlooked. Think of the test drive as a final quality control check.