The ET measurement on ones I have seen has been ET 12! not 30 to 39 for the van, this will leave you with a van that wants to go in a straight line and be heavy around the corners.
The low ET will place the centre line of the wheel further away from the van, giving the effect of more leverage on the stub axle, and will put more load on the front wheel bearings (and the rear for that matter) so you may find that it starts to eat bearings.
The ET cannot be corrected by shims as adding shims will reduce the ET.
MWS won't supply you with a load rating for the wheel, dubious.
Yes they will go on, yes they will work but they won't be right.
I know plenty of people have them on, probably with no adverse effects but... well....
I am open to being proved wrong but from the ones I have seen I would not be happy with them on my van but thats just me.
