OK, so I took some measurement with these wheels.
With a 8,5" ET20, the inner clearance is the same as stock.
But the outer position is +50mm
Rear :
Inner clearance from the stock shock : 50mm
Outer position of the wheel from the exterior of the arche : about 25mm
With a 225 40 18 tire (which is streched on this rim), there is about about 14mm between the arche and the edge of the tire.
Obviously, the tires scratches the arches during cornering...
Front :
Inner clearance from the stock shock : 21mm
Outer position of the wheel from the exterior of the arche : about 24mm
No problem at all with a stock suspension.
So, will a 18 x 8.5 ET35 fit on rear ?
Maybe I should roll my arches...
Thank you