due my experience with the gt-tires i thought it could be usefull to test intermedians and rain tires befor i need to use them in a race. so i went on intermedians on a 20 degree track. the feeling was quite weird, no grip, some kind of snap under/oversteer and a very soft feeling. the temperature raised to just 40-50 degree which is really not driveable. on the same track and under very same conditions, the soft slicks will heat up to 60-70 degree and they provide much better handling. result: intermedians are really more than useless. what about rain? i started a test session on a wet track and on a track under rain conditions. if there is no line visible, the best thing is to go for soft or hard rain tires, depeding if it is still raining and there is a lot of water on the track. if the rain stops and the track starts to dry it could be usefull to go for hard rain tires but often it is better to stay out one lap longer (nordschleife) on soft rain tires and then to switch to soft slicks. if the track is very cold and still kind of slippy but the rain tires start to overheat (especially on long straights) it is usefull to go on the wet part of the track to cool down the tires. this can work for 2 or 3 laps but if the track keeps drying it is not possible to stay out any longer and the lap time will be much better on slicks.