Anyone know the pro racer GN weight for 18x7.5

and what would be better, 35 or 43 mm offset I know nothing of wheels sorry.

 

5zigen Pro Racer GN in 17x7.5 is 20lbs, so call it maybe 22-23lbs for 18x7.5.

With a 7.5" width I would personally go with a 35mm offset, though either of them will "work" just fine. I have a 7.5" wheel with a 42 offset (basically identical to the 43 offset you are considering) and I like the look of it better with my 8mm spacers on there (which effectively makes the wheels a 34 offset). The lower offset will have the lip of the wheel about exactly flush with your fender, the higher offset will have the wheel inset about 8mm (nothing close to how far your stock wheels are inset though). Either way is fine, just gotta decide which look you like better. though I do see your car is slammed pretty low, so you might get a more rub on the outside of the tire against your fender with the lower offset.

 

His car is not slammed. His front tires are sitting on the lowest point of the ramp, so it looks like his car is a lot lower than it actually is. Also please resize your sig.... it's too big.