Tasman

It is likely that the compound is too soft for the track and suspension setting you are using. The tire looks to have "Cold Tear" or "Tearing". This is from a stock shock, or bad suspension setup or the track is very abrasive or its cold (less than 70 def F). Since you note the SportSmarts work fine with the same lap times, I suspect you are not on a record breaking lap time. Thus I would point the finger to suspension and compound first. Is there a harder compound available? (if so go harder on the compound) Do you have stock suspension? (if so get better aftermarket shocks) The PSi is fine. thanks for the input but as i said the bike is the 675r which has ohlins suspension and the tire is the D211 gb racer endurance which can not go any harder. May be, because the track is slow i cannot put much heat on them. is there any way to solve this with tire pressures?

ok sorry. here are some more information and pic. the bike is 675R. set up is the recomentaion from triumph for race minus 2 clicks from all. tire pressure 21 psi cold. this is a gp racer endurance 190/55 made in france. the track is new and lockated in Cyprus. As i said is 2 km long with low average speed 95km/h. it has long slow (70km/h) corners. it is not that abrasive. there isnt a lot of camper on the corners. the tire shown is after 25 laps. I am running with the fasted. a TT racer which was on the track was 3,5 seconds faster than me with his cbr1000. The tire in the pic is half warn. A friend with a cbr1000 the same day running, the same lap times, the same tire, with a bit higher pressures 25psi cold he finished it in less than 30 laps. His tire looked just like mine shown in the pic. I would like to note that before the gp racer i had the sportsmart 180/55 24 psi. I have done over 90 laps in three days. It is still new and it does not have the wear patern shown in the pic and i was running the same lap times. please help.

is this normal? this was done in slow track (95km/h average) with lots of corners 2km long. People are finishing these in just 3 sessions of of total 30 laps.