Lead wheel weights are pretty much a thing of the past. Iron and aluminum have replaced them, Federal mandate. I'm not sure if it is even legal for tire stores to sell old "take-off" lead weights. Lots of fishing areas no longer allow lead weights to be used. Leaded gas WAS bad stuff. Even worse was the junk that California forced to be added to gas back around 20 years or so ago, MTBE I think it was, turned out to be truly evil stuff, but enviro-nazi's forced it to be adopted before adequate testing.
Mark