New ones on the back, understeer is easier to control than oversteer.
http://www.michelin.co.uk/uk/auto/auto_cons_bib_pqr_neuf.jsp
Rich (sorry to jack thread mate ) i have new tyres all round and i often get rear "drift" ( in the sense it feels like its sliding slightly) on fast bumpyish corners any ideas?? lower the PSI in rear??