Steering control

[NoControl]

I finally got all my road tires for my tc5 for speed runs and just plain driving around, but I have 2 problems and I'm not sure how to fix them, I have ideas on how to fix and whats wrong but I'd like some more experienced advice.

Problem one my front left tire wobbles, I have the lock nut on tight and the wheel is up against the hex, the tire is mounted properly also.

The second problem is when going 50% throttle or more and I turn the wheel the car spins out of control till I let off the throttle, could this be due to the rear diff being locked or is there something else I need to adjust.