Wobble at slow speed

[RiderMike]

I’m new to Triumph bikes in general, but have been fixing and riding bikes for years. I bought a 2018 tiger XCA that was damaged (not too badly) and have been fixing it up. The bike is completely finished and I’ve been driving it, but at 55 km/hr, I have a weird wobble that almost rocks the bike front to back. No shaking in the handlebars and it steadies out as I speed up. It has brand new dunlop trailmax missions, the wheels were balanced, and trued at a bike shop. The steering head bearings are tight, it has brand new fork seals and bushings with everything else tight. It’s sort of annoying when driving through a town, is this common with these bikes or does anyone have any pointers as to what to look at. Thanks.

[NiK]

AFAIR, it's completely unheard of!
Does the wobble persist when you pull the clutch? If so, there must be something wrong in the bike frame. If not, there might be something amiss around the engine (mountings? transmission?).

[RiderMike]

Thanks for clarifying, didn’t imagine it was normal. The damage was mostly cosmetic but I have checked to made sure no welds had cracks or paint chips. The wobble still persists even when the clutch is in.

[NiK]

Originally Posted by RiderMike

The wobble still persists even when the clutch is in.

You mean 'off' (c; ?
Anyway, same behavior with and without clutch, means this is not an engine/tansmission problem.

[Guitarman]

Don't do off road so can't comment on the tyres but they look a bit chunky to me.

You say everything is tight. Have you checked the rear end and the bearings in the drop links in the region of the lower shock mounting.

[Will Morgan]

Have you checked the front wheel bearings?
Have you checked the alignment of the fork legs thru' the yokes/triple trees? Are they slightly twisted and/or not parallel?

[ijinak]

Maybe check you don't have loose spokes