Wobble on bike

Hi my 1990 XJ600 whilst riding always feels to have a slight wobble
would this be wheel ballancing?

many thanks

 

yes - particularly if it comes and goes at certain speeds, the handlebars will wobble if you hold them loosely.
Also check wheel bearings, possibly steering head bearings or (As was mine) swing arm needle bearings - I sometimes got a loose feeling rear end when cornering - You could move the swing arm by hand when the bike was on the centre stand. She's still in the garage!

 

many thanks withh get them all checked'

 

Mine has 36 mm fork tubes and something weird happens when 'm riding on cement with rain-groves going the same direction of travel. I think that the forks oscillate side to side individually and it feels like speed wobbles over 80. I think I'm going to ask chacal if he has fork braces, the tires aere newq and they were harmonically balanced at Yamaha little change.

 

padre, a front tire with a continuous center groove will "grab" at rain grooves and make the bike all nervous. If you still have the stock fender fitted, it has a good stout fork brace built into it.

For the original post, Markie's advice is spot on. ANY of those factors can cause your symptom, as can simply worn out rear shock(s.)

 

Hi guys my front Tyre has a Continuos centre groove and yes i do feel a nervous ride at times! the rear tyre seems ok

i went for a ride today the ride was fine untill i road over a bit of tarmac that was different than what i was on and it felt like the bike wobbled bad and i lost confidence slightly then coming home over not tarmac but a different road surface i got that nervous feeling on the bike

this is really doing ma box in lol

any sugestions?

thanks guys

 

Everything Markie suggested plus what I suggested:

Worn/loose steering head bearings

Worn/loose swingarm bushings/bearings

Worn/loose wheel bearings

Front forks in need of oil change (maybe in need of oil period if seals shot)

Rear shock(s?) worn out

What tires are you running, and how many miles are on them?

 

Hi Tyres on front are Pirelli 90/90 18 51H very good treat central continuos groove type

i just realised silly me there was not enough pressure in the rear tyre it should have been 32psi but was only 20

think this might have been the problem?

 

Yes very much so. Makes the bike feel like you're on "greasy" surfaces.