https://www.ebay.com/itm/New-17x7-5-...gAAOSwZ1BXdrnr

Would these (link above) steel wheels fit my 04 LS 430 with 17" wheels? I have 4 Blizzak snow tires that I mount for the winter. Looks are not an issue for the 4-5 months.

The specs match except 43mm offet vs 45mm offset on the factory 17" wheels. 17 x 7.5, 5 x 114.3.

Would that 2 mm offset cause issues?

Looking for something I can mount the Blizzaks on and just do a swap when the snow flies.

 

Per a wheel offset calculator, you'll get 2mm more clearance by the inner portion of the wheel and the outside portion will extend an extra 2mm.
You should be good.