OK then but I'm not sure what to replace the left front tyre with. Alot of tyre makers seem to not make their best tyres in sizes below 17 or 16" anymore :( I think I need a tyre that grips like the T1-R but has a stiffer sidewall if such a tyre exists.
Here is a picture where you can see how the tyre has rolled over onto that shoulder and worn it down from all the clockwise trackday laps.
http://i264.photobucket.com/albums/ii198/ssimbo/tyrewear2001.jpg
Donnington Park Trackday -> http://www.youtube.com/watch?v=-NxiDekdHi8