1990 FLHTCU. Running Dunlop Marathon tires front and back. 41 in the front and 42 in the rear for air pressure. My bike exhibits a scary trait and I was wondering if any old FLHTCU riders experience the same thing and if so.. did they fix it and how.
My bike is totally rock solid at speeds up to 75mph. Twisties and straights it rides great. When riding at any speed over 75mph going straight the bike is totally fine too. Its when I make any kind of turn at over 75 I have a problem. My front end seems to "wallow" ever so slightly left and right when making a turn. It never increases but its scary because I don't know if it will. It almost feels like wind turbulance but its a very steady wallow to the left and to the right. I can actually see the fairing rocking left and right and I can feel it in the handlebars. As soon as I slow down to 75mph it stops. I don't make it a habit to speed but I was riding with a group yesterday that was doing around 80mph in a 65 which was what the flow of traffic was and I couldn't keep up because I had to stay at 75.
What could cause this or is it normal for a 20 year old FHLTCU??

 

Problem Solved. My front tire was 10lbs under inflated. Its a Metzler Marathon and I run it at 41lbs. It was at 31lbs.
I put 10lbs in it and the wallow is gone.

 

i was just about to suggest tire pressure and if that didn't fix it, check your neck bearings. i'm glad it was the easier of the two.

 

I was wondering where you got the Dunlop Marathons?

 

You need to keep a close check on the air pressure,that`s why a lot are going down.