Just had a Dun Elite 3 put on the rear of my 05 springer.The bike now seems to teeter from side to side at about 75 to 80 mph.It was rock solid before.What do you think is going on?

 

get it on a lift and check it out. just changing the tire shouldnt make it go crazy like that.
was riding one night with a friend and his started doing that. when he pulled into his drive his axle broke, didnt know the bearing had spun and wore it down...

 

Maybe it's a bad tire??

 

Is it different from you old tire? I'd put it on a lift also.

 

Did you change just the rear tire or both tires? You can't have different style tires on the front and rear.

 

I have the stock Dun on the front..I have checked about everything.I guess I will try a new E3 on the front.

 

I would put it on a lift first before you buy another.

 

check that your tire pressure is between 38 & 41 pounds. It might be set higher!
Hatch.

 

Tires are directional. A tire put on backwards can cause what you describe. If it was mounted backwards it wouldn't be the first time I had ever seen it. Or the fifth.

 

Tires need to be same front and back. Elite 3 all around. Will continue to be squirly until they match.