I HAVE BEEN A WHEEL ALGNER FOR 5 YEARS AND MY BA MK2 XR6T RUNS VERY WELL ON -.5 NEGATIVE DEGREE CAMBER ALL AROUND, FRONT CASTOR 7 DEGREES, 2 MM TOE IN FRONT AND REAR. PERFECT TYRE WEAR ON STANDARD HEIGHT WITH 17 INCH DUNLOP SP3000GAYS I SUSPECT THE R SPEC WOULD BE RUNNING -1 DEGREE NEGATIVE ( BEING 30MM LOWER THAN THE STOCK T) CAMBER ALL AROUND, APPROX 7 DEGREES CASTOR , 3MM TOE ON THE FRONT AND REAR. AS A RULE OF THUMB FOR EVERY ONE DEGREE EQUALS 2MM WHETHER IT SHIMS , CAMBER OR TOE IN. WE WHEEL ALIGN CUSTOMERS CARS EVERY 5-10000KS AND ADJUST ACCORDINGLY EASIEST WAY TO GET BETTER TYRE WEAR IS INCREASE YOUR PRESSURE OVER MANUFACTURERS SPECS BY 10 PERCENT MAINTAINED REGULARLY