In a three way deal including a player to be named later, I got some 17 inch BBS RGR wheels that had been chrome plated. The only problem was that my car was built in November of 2007 and therefore had the TPMS sensors inside the wheels. The older BBS wheels have a valve hole that is smaller than anyone else's, about 5/16". The TPMS sensors attach to the valve that needs a 29/32" hole. At first I just drove around with the warning light on. But recently my 17 year old daughter has learned to drive the car. I needed the sensors installed so that she would pay attention to the warning lights. So I drilled out the valve holes to 29/32" from the inside out. I did that because on the front side the new hole extended into the lip of the wheel. Of course that meant that the new valve wouldn't attach to the wheel, because the clearance flat for the nut that screws on top of the valve wasn't there. I decided that a countersink would be good enough and machined one into each wheel deep enough that the valve nut contacted the wheel all the way around. I went back to Discount and had the tires remounted and balanced. The warning light is out, and after 200 miles of driving everthing is A-OK. I took some pictures, but didn't realize how bad my son's camera was until after the fact, here they are; The two valves; The valve hole from inside the rim; The final install; Along with the crummy quality, the dates are wrong on the pictures. All work was performed this week.