Originally I thought that I had spun my tyre up on a sharp stone but it has stayed that way for a while now & it isn't a straight line (confirms it wasn't caused by wheelspin).
I haven't cared much about it (my rear tyres don't last that long anyway) until I recently noticed the front has done the same!
I sent an online message to Michelin Australia, over 3 weeks ago & haven't heard squat from them...

Rear - The crease is on the right (1 o'clock):

Front - The crease is on the left (11 o'clock):

Does anyone know what has happened or anyone who works for Michelin in Melbourne?
I am seriously considering going back to Bridgestone, as this is the first set of Michelin's I've had & my rear is needing to be replaced pretty soon...

Oh & they are not the Spanish made ones that were recalled some months back.

Daz.