one thing they never take into account is the way these cars are set up. with the dago of these cars your alignment changes at speed. on average they will be 1 to 2 inches lower at 70+ mph. which will take away toe which in turn will eat the inside of your tire.
i discovered this by bolting a small piece of strap on the front frame horn with about an inch of clearance .. did this on a nice flat stretch of road. the bottom of the strap was bent in an L . ran the road up to about 90 mph. car never bounced but the strap was scraped and bent.
i like the shim alignment so i can fine tune it later .