Posted by Rodder on September 27, 2000 at 04:39:54:

In Reply to: posted by Bill in Phx on September 26, 2000 at 17:02:50:

Know it well, can't source it, stopped worrying about it. Heard it continuously off walls, bridges what have you throughout France Spain and the Pyrenees last month ... not much local Landie backup and in a hurry, so pressed on with no ill effects. Suggest tread pattern is the culprit.