wobbling in the steering

[AlaskaVX]

I have 33" tires and mine definately has the shakes at 40-45, I tightened the steering before (a year ago) and it seemed to work for a week but it came back. I guess I just learned to deal with it but it is VERY annoying when others are in my car and I look like I am suffering from parkinsens with the arm shaking like crazy. I can white-knuckle it and minimise it but then I get a clicking noise from the wheel trying to go back and forth and it feels bad so I just learned that that is the natire of the beast, if anyone figures it out I really want to know. With stock tires/rims I never had this problem so the tire or rim could definately be the culprit in your case.

[WILLY]

sounds like bad rotors to me.out of round/thickness

[WILLY]

mine had that prob.when i bought it so i had the rotors and pads replaced and no more prob.

[SkidPlate]

I notice a huge difference in the loose steering feeling between my summer and winter tires.

Summer: 285/55-18 Pirelli Scorpion Zero
Winter: 245/75-16 Firestone Destination M/T

Different rims and all but the tread patch is over 10" across on the summer tires, versus 7" with the winter. Plus my summer tires are well worn.

On well traveled paved roads, especially at traffic lights where the pavement has deep grooves, my summer rubber really throws me around. The winter tires don't follow the groves at all and make the steering feel much tighter.

I did notice an improvement when I had the front berings repacked, but the difference in tire width is like night and day.

Since I have the same tires I would say (given the groves of the road your on) that the majority of what you are feeling can be fixed with narrower, less worn tires. YMMV