new here was wondering if any other 5 lug wheels would fit on the lw300 like Pontiac

The bolt circle is 5x110 so it’s limited... Most Saab wheels may fit, you could also use wheels from an Ion Redline or Sky or Aura, or a 04-12 Chevrolet Malibu, or a Cobalt SS (or any five lug Cobalt or Pontiac G5)... I also think the Pontiac G6 has compatible wheels...

happy hunting!

Well, Andy is running Saab wheels on his L and I seen an L sedan with IRL wheels so I know that fits... I imagine all the FWD wheels will go on with minimal issue (maybe hub bore but idk), the wheels from the Solstice and Sky may have an awkward fit due to maybe a different (lower) offset... RWD cars usually have lower offset wheels, which would push the tire out to the edge of the fenders (or maybe past) when used in a FWD car...