Morris Minor Owners Club

Looking at new tyres for the mot this year and having probs locally finding any for the van. Ive been running 155 x 14 on the van for years with no probs, but a couple of the wheels have got a bit rusty, so Ive got hold of a couple of second hand wheels but I didnt check if they were off a saloon or van.
Where do I measure to make sure the 155s will fit? Anyone know what other sizes fit that may be more available.

Don't worry about it despite what others may say, I have been running 155/14s on standard wheels for over 30 years, no problems

I run Nankang 155/80/14 tyres on Jethro's standard rims and they perform very nicely thank you.