2002 MP5 squeel

[mad max mtrsp]

Last month completed timing belt/waterpump and belts change.
Now my alt belt slips/squeels when it is cold with the HVAC fan only on half and lights on. Is this common?
Streached a little? Though I made it tight enough, don't want to over do it and kill the alt bearing.

 

[mad max mtrsp]

Also I know the wheels on these are 5x114, but does any one off hand know the backspacing/offset and center bore dia?

 

[tweety2300]

Twist the belt, if you can twist it more than half a turn its too loose, less than 1/4 turn its too tight

 

[ccrunner2011]

Also I know the wheels on these are 5x114, but does any one off hand know the backspacing/offset and center bore dia?

Stock rim offset is +50 mm.... very high offset. (They are actually 5X114.5, not that it really matters)

They have a center bore of 67.1 mm I believe.

Probably a loose or worn out belt. If you've already tightened it and it's still squeaking it's probably just loose and needs to be replaced.