I have been trying to figure out if I can run 18x9.5 35mm (squared) on stock suspension without any rolling of fenders or serious rubbing. I’ve only been able to find examples on lowered ones so I’m not sure how it will work with stock ride height. Any help would be greatly appreciated.

 

Should be fine, front brake clearance is what you should worry about

 

I'd recommend checking out the Fitment Industries website, there's a ton of examples of different wheel specs if you search the gallery. THIS looks like the only LS on 18s on stock suspension on the website. HERE's one on 18x9.5 wheels with just lowering springs and front spacers, no other suspension mods. And like @AVSRacing said, you need to make sure the wheels clear the front caliper. Pretty much every LS on 18s that I saw on Fitment Industries is running a front spacer to clear the caliper.

 

Yep I had to run spacers on my work wheels to clear the front calipers.