I found this.. Cars (Passenger Cars) This law restricts the amount of window film darkness on all side windows combined with any existing tint already in the glass to no darker than a number total of 35% 25%LT (LT = light transmission). If the car has 2 outside door mirrors (one on each side) it allows any darkness on the rear wind shield. If the car has only 1 outside mirror the car is only allowed a total of 35% 25%LT on all windows including the rear wind shield. It does allow front windshields to be tinted measured down from the top of the windshield 5 inches or to the AS1 line which ever measurement comes first (most cars have this AS1 line & some don't). Total of 35% 25%LT allowed here as well. 1987 and older are not excluded from this law any more.4 Door Car window tinting $189.00to$259.00Got the info from http://www.textint.com/They are in Dallas though so prices may be different in San Antonio. Im from CA so Im not sure if the law has changed but site should be current. Either way if you find a tint shop around you they will have info on whats legal.
2006 Pontiac G6 GTP3.9L V-6 240hp and 241 lb-ft or torque18" Aluminum, five-spoke, flangeless200 Watt, 8 speaker Monsoon sysChrome dual exhaust tipsLiquid Silver MetallicBorla Custom ExhaustDr. Speed Cold Air Intake