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[TonyO77]

First,
Can you recalibrate the cruise control system for speeds above 88 mph?

Second,  I’m getting a wobble above 90, and it gets a little squirrelly, any idea what it is?

[SIKBIRD]

Don’t know about the cruise control

Your wobble could be a number of things or a combination of a few.  Check the easy stuff first:

Tire pressure

Front motor mount (under oil filter)

Grease the neck bearings (if it hasn’t been done before or it’s been a while be prepared to pump a lot of grease in there). Stuff paper towels or a piece of rope around the bottom before you grease it so it will force the grease up to the top instead of it all coming out of the bottom. Once it oozes out of the top then remove the paper towel or rope and pump until it oozes out of the bottom.

[JCZ]

Also, look closely at your front tire.  Besides tire pressure is your tire cupping or wearing unevenly.  Lastly, do you have a lot of weight in the saddlebags or tourpak?

[johnsachs]

Along with what's mentioned : Steering Head bearings, steering head bearing races, steering head bearing adjustment. Wheelbase measurement, left side, and right side, to be sure they're equal. Loose motor mounts, and transmission bolts, frame cracks. Heim joint, top motor mount, and also trans. mount.
John

[kojak]

Don’t ride at those speeds unless you get it figured out. Is it happening in a straight line or when you’re taking sweepers? What year bike?

First,
Can you recalibrate the cruise control system for speeds above 88 mph?

Second,  I’m getting a wobble above 90, and it gets a little squirrelly, any idea what it is?

[CVO-RIDER]

I’ve never tried to over ride or recalibrate the cruise control but not sure if it can be done.  2nd question…Looking at your profile,if your bike is a 2004? I believe it is the older frame design before HD changed the frame to a stiffer design I think in 2009.  I have a 2002 SERK and I had a 2005 SEEG and both of those bikes have the older frames (HD refused to admit any issues with the frames) and when above 80mph I would get the unstable wobble when in a long sweeper turn especially if I hit a little bump in the turn. Aftermarket companies came up with frame stiffeners like..true track or ride straight to counter the issues.

[TonyO77]

The front tire is cupping, so I’m going to assume either I didn’t get it balanced correctly or I rode with incorrect tire pressure.
It only does it in a straight line and the oscillating seems to match the wear pattern on the front tire.
Rode to Florida for the weekend and the wobble actually came in around 105-110.
Still spooky though because normally I can top it out and it’s smooth as silk either solo or two up.
I’m going cross country next June but I’m going to go ahead and change the tire, it has never done this before the tire started cupping,  just rolled over 67,000 on the way home.
Up to 100, it was perfectly stable

[TonyO77]

What tire pressure are yall running?
I have been running about 40psi, is that too high?

[TonyO77]

I should add that it feels like it’s all in the front end of the bike, though I’m going to change the swingarm bearings anyway before I go to Cali, just because