OK so we have ploably run one of the Slot.it Porsch 956's for about 2000 - 7 second laps using a stock scaley motor. The as supplied tyres were trued but not glued using sandpaper. The tyres now have a distinct radius on both sides about 1 mm into the width. We suspect this is sufficient to impact the grip of the tyre. Is this to be expected? Is this wear sufficient to be significant? Would it be less if we gluded the tyres on? This is not a complaint its more about re-ordering tyres (we are standardising of Slot.it P6) so that we don't run out. As we get better the laps per night are going up. In Tuesdays eveings entertainment we did about 1000 laps so tyre replacement may be an issue.