I hear small thumping under car near front when I turn steering wheel I hear small thumping I feel small bumping at 55-65mph

most def you need an alignment and you also need to check inner outer tie rod end and check the tires belt as well

You are turning so far you cant turn anymore the noise isn't bad your just hearing your wheels going to far left or right not harmful.

check the u joints in the drive shaft or the rear end needs greased,or it could be going out.have you changed both the inner bearings as well on the front end?

there are many possibilties. Sway bar, sway busings, shock, tire, something in the brake pad, wheel bearing, the list goes on and on. Best bet is to let someone qualified to take a look and determin what's wrong before hundereds of dollars are spent without the cause being fixed.

This would be your front struts.

If it is still under warranty take it to the dealer. You could have at a minimum have thrown the weights off the tires. But anything like tie rod ends or belts in the tires could be bad.

try to replace the wheel bearings.

Power Steering pump problem.

Have your CV joints inspect.

If it's a 4WD then your front universal joint(s) on the front wheel drive shafts are on the way out and should be replaced. They should be replaced as a pair (both sides) so that you have uniform wear, but you can replace the bad one to solve the problem. The noise should be coming from one side or the other, indicating which one is going bad, but it's most likely the right sive CV joint. Also, it the rubber boot on the end of the driveshaft is damaged or torn, that would point to the offending joint. Your parts store should be able to sell you a reconditioned half shaft to fix the problem. Replacement can be done at home with decent tools.