alternator belts

hey guys maybe a stupid question but any ways... i changed all my belts when i replaced my alternator about a 2 or 3 months ago give or take, and my alternator belt has been tightened about 3 times since and today it snapped right off i replaced it today and ask the guy if there were any other more high quality ones. 10 - 4 negative on that one and now its quite.
my question is: Is that the normal life of this belt or have i done something wrong?

these belts last a long ass time lol. myaybe you tightened it too tiht,

when u tighten a belt of any sort,put a straight edge from pulley to pulley,put ur thumb in the middle of the belt and press down.You should be able to deflect the belt about 1/2 inch.anymore it will slip,any less and it will wear prematurely or break.BJ

over tightened it....

just a question, have you checked for misalignment of the pulleys? it was proly just too tight though.

I always use Gates belts from CarQuest on all my vehicles. I did have an alternator belt break once after about 6 months and they replaced it for free. The alternator belt and the power steering belt shouldn't be as tight as the AC belt.

thanks man ill check that out

Why did you re-tighten the alternator belt "about three times" since replacing the alternator? With the belt off, spin the alternator by hand to see if it has a bearing problem, shouldn't take all that much to spin it.

i re tightened it because it kept coming loose and it would whine like no other!

alt bearing's GONE.