Actually, he said "I have noticed that lower tire pressure increases the wobble occurring. Currently running bias ply @ 22psi." To me, that sounds like if he ran the proper and recommended air pressure for his tires, it might just cure the problem, all by itself. Still, I'd like to see his actual current alignment spec printout. Whenever one starts altering the ride height and attitude of the stance, that changes the whole dynamic of the suspension geometry. After that, all bets are off.

 

Sorry, can't read and type at the same time.

Yes, you are correct about the printout but the problem is that it does it on compression and/or rebound so the springs are not in the static position.

 

Thanks for all the replies. Haven't had a chance to get under her and recheck tow and exact caster yet. Hopefully this week. I did bump the tire pressure up to 30 and still got the wobble the other day possibly even more violent than at 22psi. The tires are rated to a max psi of 32 and boy does that increased pressure make for a stiff ride...think I might go back to 22...

 

Seldom if ever should a tire be run near/at the max pressure stamped on the tire, that is the maximum safe hot pressure that should NOT be exceeded. Tire pressure can easily increase 5-6# from cold to hot. Check the manufacturer's specs for your tire size for the normal inflation pressure.

 

bubbel in the tire

 

dubbel bubbel troubel

22 is way too low for highway driving. If your ride is too harsh then you are going to have to deal with shock valving and spring rates.

 

If everything in the suspension is tight and all steering componants are in good shape .
I would have an alignment done at a good shop ,if not allready . My choice would be to switch to radial tires . I know this has all been hit on but I like the sound of my own typing .