Interesting quote from "The Transporter"
My son has an IS200 Sport,had new tyres fitted by well known independant tyre company who also did four wheel geometry, some time later same problem with inside wear on front. Went back and complained and they stated that the geometry was set up as per softwear on equipment.
He had two new front tyres fitted and took old ones to Lexus garage who then set up the geometry again and he now finds that the original problem has been solved, Lexus charged about half of what the independant did !!