Not sure I understand the problem totally. Do you want to take the tire off the rim while the tire is still mounted---still on the lugs?? Or do you want to get the tire with wheel off the axle??

I would never try and get the tire off the wheel while it was still on mounted to the axle. I would take the tire and wheel off the axle then take the tire/wheel somewhere to get the right size tire put on.

If the wheel with tire will not come off because it is stuck in the wheel well then I would let all the air out of the tire---all the air---and work the tire and wheel off the lugs with crow bars etc.

PS---the wheel does NOT attach to any bearing. The wheel is attached to the hub which as lugs (screws) sticking out of it. The lug nuts hold the wheel to the hub. The shape of the hub will depend on whether you have disc or drum brakes. In any case, the wheel bearings sit on the axle behind (inside) the hub.

Put the lug nuts back on, but leave one rotation from tight. Drive it at about 10MPH and zig zag, it will pop it loose. Can't help you with the bearing, but get it fixed.

Good thumbs down. You can try to beat the hell out of it with a hammer, or use the vehicle's weight to get the job done. I've done it many times.

Go to a mechanic or call one out. That's the best option.

Put 2 of the nuts back on half way and hit the tire (not wheel) with a sledge hammer around the tire until it breaks loose from the hub.

Any advice? Moms car, she took it to a used tire place, guy put on wrong size. About a week ago, now tire will not budge off, it moves but bearing moves with it, frontwards, backwards.

Jacked up, nugs off.