| Just to conclude this i have been forwarde an email from Michelin uk that had been received from their French techinical department.I'm personally happy with their reponse and will no longer worry about this line.
"I have had a reply from our technical people in France.
They have confirmed my original suspicions in that the signs you describe are
caused by a carbon black rubber strip which is moulded into the tyre before
curing - carbon being a good conductor of static electricity.
This line which has appeared in your tyre will disappear after 1000 + miles and
has no detrimental effect on the performance and or handling of the bike."
Two Wheel Department,
Michelin Tyre Public Limited Company | 
05-Jul-2005, 14:03 
Threaded Mode