I've been looking for wheels for ages and finally found them.

After some asking around t seems that they do not offer the correct offset for my car.

Idea was to go for 9.5X18 all around with 255/35/18 tires.
According Jimlab's wheel and tire size sheet I need offset 50 front and 38 rear.

This means I would order all 4 with offset 50 and work with spacers. allowing the wheels to be moved around for equal wear.

Now, the supplier only has the 9.5 wide wheels with offset 40 and 35. meaning that the front wheel will be out 1 cm (offset 40) and the rear needs a spacer of 2mm

Anyone has any advice?
Will offset 35 be ok as well (1.5cm wider for front)

 

You may be better off asking this in the suspension area. However, I am running 18x9.5 with a 34mm offset up front, lowered with Zeal function X coilovers, and it looks like it wouldn't have fit under stock fenders. I currently have 15mm wider fenders.

 

A spacer will make things worse, not better (lowering offset). Those wheels will not fit under stock fenders, not even with rolling (at least the fronts won't, the rears would fit with rolling).