| My 900 frame cracked at around 5 years and 35000 miles.
It was more of a hair-line mark in the paint on the top tube about 2 inches from the headstock, which I noticed after a good thrash back from Donington one evening.
The previous owner may have done the odd wheelie in the first 5000 miles, but it has not done one since.
I must confess to having done the odd stoppie or two, which does bend the rear shock lower mounting bolt and probably causes a fair bit of stress around the headstock area.
At 13 years old and 50,000 miles I treat it more gently these days, - heading to the Island tomorrow night for a few days to catch the Senior Manx GP, and maybe a steady?? lap or two of the Mountain course.
Steve | 
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