i went on track at olton with set of toyo t1r and found them to be poor, squeeling all the time and poor grip, changed to a very worn out set os yoko a048's and was fun on them, grip still not great and wore them down to canvas so they were on there last legs!
popped the t1rs back on rear to go back after the track day finished and had so much more grip this time round, they were really fun and actually managed a faster lap then on a048's!
since then on last track day brother took my clio and i was in the van, had nearly new set of a048s on and grip was VERY good! impressive and even after whole day of abuse not much tread used!
from the looks of it the yoko ware out slower then r888s! mum has standard ones on her esige 240s and she runs them all year round come snow, rain or our occasional rain! good tires just take care in bad conditions with them! if i had the money i would run them all summer time for road!