1980 Suzuki GS1000G front wheel oscillation, wobble or shake

[bwringer]

Agreed -- even very low tire pressure won't cause all the issues you report (but it will make them worse). You have multiple problems here, and the fine elements of the GSR Hive Mind above have given you several things to look at and correct.

With vintage machinery, it's never just one thing -- it takes time and experience to adapt your mindset away from "one problem at a time" thinking most useful on newer vehicles.

[Mickeymoe]

So it finally stopped raining and I took the bike out for a ride early Friday evening with 36psi instead of the 20psi that was in the tires. Unless I'm imagining it, the wobble seems to be gone. However, the front fork still makes a single "creak" when coming to a fast , hard stop using mostly front brake. The PO told me he had the front forks upgraded by the dealer (can't remember exactly what he had done) and the rear shocks are modern high-tech units. I must admit, the bike really smooths out bumps unlike my GS850G which had the chrome factory shocks. I think the aftermarket jobs are "progressive". I'm going to now put the ATK fork brack back on since the wobble is pretty much gone.

Mark

[limeex2]

Sorry I over diagnosed. It was a creaking noise. stand by the steering head adjustment though even though it would have nothing to do with a creaking noise. I need to add, when tightening the steering stem nut, loosen up the upper triple clamp bolts so the lower clamp may move freely.