Front end wobble

[John d]

Tire. No question. Deal with it if you don't want to replace the tire.

On a new tire, the rolling center is pretty much perfect. As the tire wears, that centerline wears a little bit to one side or the other, and when you let go, it has the effect of steering the tire, one way and then the other, as the centerline on the road moves from side to side of the bike's actual center. For most of us, the perfect storm of wobble is between 40 and 50 mph, probably a harmonic thing with the mass of the forks and bars.

That's my theory, and I'm sticking to it until somebody with important-sounding letters after their name says otherwise! :lol:

I had a PR3 front tire this year with a no hands decel wobble from around 3000 miles to the end of its life. At 6000 miles, with the left side of the tire bald, I replaced it with a half used PR2. That cured it. Your theory makes sense to me.

 

[El Toro Joe]

So..... new set of P2's and it's totally resolved. Dead solid on decel at all speeds. Much thanks for all the input.

That will most likely change as the tire wears

 

[GPRIDER]

It's most likely the tires. In all the bikes I've owned, when I got some head shake, it was fixed after a tire replacement. The steering head bearings were fine. But look out for bad steering head bearings.

GP