I have 1996 Ulysse 2.0s.
I also have used ATS for tyres. I had 2 front tyres over a year ago, and a new back tyre a few weeks ago.
ATS say if the car doesn't have re-enforced tyres when it comes to them, it is not a requirement for this model of Ulysse, so re-enforced tyres are not rquired for the mark 1 models.
This has been a topic of conversion at work as I have college who have a Ford Galaxy, and he has had to have re-enforced tyres fitted.
He has been told that any tyre pressure that requires 36psi or more, it is a requirenent to have re-enforced tyres.
Hope this info. has been of some use.