lowered van

Hi, I have a T32 T6.1 204 DSG it is lowered around 70mm (axle to arch 400mm front, 410mm rear) I’m swapping out the 20’s in search for more comfort generally and whilst towing a caravan. So my question is rubbing on the arches when using a 235/65/17 wild peak AT tyre at this level of lowering...

Not sure if covered before but my van from new was supplied with solow suspension and the front parking sensors are so sensitive and always beeping at nothing.. I've had it several times the brakes have locked on leaving a driveway as it thought I was about to hit something but nowhere near...