Hell, you can grab the front wheel with your hands and find if there's any wobble in the assembly.
It would definitely be noticeable if there were an affect on the ride and turning.
The noise is from the tire as you stated.
Why all of the sudden think it's in the front end?
Whether yo know it or not, the front tire does not wear evenly. One side of the tire, the left side will always wear at a greater rate than the right side of the tire. That means there will be a difference between turning left and turning right.
Trying to lay the blame on the bike geometry and mechanical problems with the front end is premature at the least.
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OK, in January I purchase a set of the anodized alluminum wheel from Pinwall. These wheels were already fitted with Dunlop E3's, already worn, with about 7-8k on them. They groan to the left and groan to the right in turns. At about 30-35 MPH, if I take my hands off the bar, it starts to wobble back and forth. My I/S has 22k+ miles, I am not going to blame that wobble on anything else, because that bike was steady as a rock before I install those preworn tires. If it is groaning to either side, live with it or put on new tires.