According to tire rack the stock size is 245/45/17. My brother just bought a 2002 GT in the mineral grey color with the stock rims. He needs tires. What size tires are people putting on these rims if it isnt stock and why? My first inclination was to put 255/50/17 on and fill the wheel wells out a little more and slightly wider. People who have been through this please chime in.