Front right tire makes a grinding noise , hub assembly has been replace problem stills there, what will be the problem?

Bad bearings in the front differential.

posible a bad hub assembly

Assuming that you have already ruled out the brakes, severely worn engine mounts can transmit vibration and noises from the engine which are not normally heard. You don't say in what I see but is the vehicle two or four wheel drive. Since you mention CV half shafts I have to assume it is at least front wheel drive. If the vehicle is four wheel drive then there is a front differential with bearings in it that may be at fault. Have you done both sides when you say "hub assembly". Defective hub bearings will make grinding noises which will change tone or intensity when turning, accelerating or braking however the noise is usually fairly constant unless they are only just starting to fail. CV joints don't normally "grind" unless they are really bad. They usually make progressively worse "clicking" sounds or "clunking" sounds especially when turning hard, changing gears or direction of travel (forward to reverse and back again). Do you have non-stock tires/wheels? Larger/wider than factory spec tire sizes can rub the fender wells when the car is moving or turning. Another thing it could possibly be is the air dam below the front bumper. If it is loose it will push down in the airstream while the car is moving and rub on the ground.

most likely a front hub [wheel bearing ]going bad but jack up front side that is causing problem and try to move tire in and out with hands at top and bottom of tire and listen and feel for noise or excess movement it to much movement remove tire an check the upper and lower ball joints as well as the shock/strut but check brakes grinding can also mean pads are metal to rotor but usually grinding and thumping is related to a bad hub

check your brake pads and if the hub is not touching the plate behind it

jack the car up and see if you can move the tire in and out or up and down, sounds like a hub assembly gone bad. hope this helps

replace hub

Check the condition of the wheel bearings, front and back side if the brake rotor, and the back side of the rim. Everything should be clean, rust build-up can throw everything out of true. The hub or wheel-bearing should be tight and smooth when spun.

sounds like c/v axles (front drive shafts) they will make a clicking sound normally when turning sharp and accell at the same time at slow speeds / look at the axle boots and look for grease on the inside of the front wheels leaking out the axle boots

It does have the complete hub assembly's on it, but they are not that difficult to change. And that does sound like the problem you are having.

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