I believe that this is a common problem and several other riders have experienced. Strong wind gusts or not, zippers should not open themselves period. I also own a BMW RP2 suit which I've had since 2006 and those sleeve zippers don't open. I shouldn't have to ship it to California and probably have to pay to have it done when I have dealers both here in Ontario and in the US that are closer. I appreciate you being interested in feedback from riders which means one should always try to correct known problems.