What all season does your G comes with? In my case on my father's car(also 2003, first gen with the external trunk release) we've stick with the stock Goodyear RS-A but last year I decided to have him switch the "summer tire" to an actual summer tire(Yokohama S-Drive). The RS-A is POS in anycase but after 5 years it was time to switch anyway. The car always had dedicated snow for the winter(living in Ontario it was a good idea anyway, the snow is Pirelli 210 Snowsport on 16" wheels). The S-Drive is quieter and offers more dry AND wet grip than the RS-A and in winter the Pirelli is much better in the snow and cold....For the G which is known to be a bit of a handful its not a bad idea to have dedicated tires for each season anyhow...
University of Toronto Formula SAE Alumni 2003-2007
Formula Student Championship 2003, 2005, 2006
www.fsae.utoronto.ca