In addition to the issue of alloy wheels, the OP should inspect his tire valves to see if they are Dill brand valves. Unfortunately, that formerly respected company decided to have valves manufactured in China, and as we have come to expect, these Chinese-made products are cheaply made and are frequently defective.
Just as surely as your child could be killed or made very ill by comtaminated Chinese milk products or by lead-infused Chinese-made toys, and just as surely as your dog could be killed by contaminated Chinese-made dog food, car owners could suffer serious consequences from the failure of cheap Chinese-made tire valves.
If you go to http://www.tirevalverecall.net/ you can view images of the defective valves and read information on how to have them replaced, gratis.