When i touch down on the runway, i can see tire marks. Yet, when i come back around (doing touch and go's), i cannot. i believe i used to be able to but it doesn't seem to work any more..?? any ideas or addons for this?

Possibly an FX (effects) file. Effects are transient, which would explain why the marks disappear. Also, it may only work with certain aircraft.But these are just guesses, really ...Martin