I've searched and searched for a diy on changing front wheel hub bearings can anyone help?

Do you have access to a press and have you checked YouTube for a similar video?

i know this is a big job.

BTW, this is rare...how many miles on your SC430?

About 156,000 I bought the car used!!! It's a 03 sc430 and I just replaced the front tires

You Tube

You Tube

You don't have a complete hub to replace in the sc430 like shown in the video. It has to be pressed out of the knuckle. Putting it back in you can press it in or cheat. Cheat by putting it on dry ice shrinking it enough that it will drop right into the knuckle. There's a couple of specialty tools that make R&R of the bearing easy, but cost so much most shops don't even have them. You can make a makeshift removal and installation tool with threaded rod sockets, and washers and nuts. You can take the whole knuckle out and either have it pressed out, or use your own press. Pretty much your options. After removing the knuckle you might be able to drive the old bearing with a drift and punch. Not easy or fun by any means too do. Oh and plus the hub is pressed in too. You'll have to pull that off with a slide hammer or press it out before even having access to the bearing.

Personally, it's worth the money to have it done, at least to me anymore.

You Tube

You Tube

The gs is like what the sc430 is like. Then you can use a press like Chris fix uses instead of the hydraulic press.

Agreed, beautiful car.

You must have missed my question, do you have a press?
what is your plan with the wheel bearing?
are you taking it to a shop?

give us more details on your plan.

I think I'll bring it to a shop and let them do it