405 hub size / pattern

Hi,

I've recently moved to the continent and brought my '93 405 TD
estate with me. I need to get some winter tyres, and I've been offered
(free) a set + hubs which are no longer required which were on a BMW 5
series... I haven't seen them yet, but I wondered if anyone had
experience of the hub patterns and knew if they were likely to be either
compatable or even remotely useful.

I guess my 405 has standard 185/65 R14 's -- the ones on offer are
205/65 R15, on BMW compatable hubs (7Jx15). Looking at my car, these
sound as if they will just about fit: only an extra .5" on the radius,
and 2cm on the width?

I understand I will be left with a speedo (and presumably an odometer)
which under reads by ~9%. Is there any legal issue with this? Will I
have to insure my car differently?

The more I write the more I think I should just go to the garage, bite
the bullet and buy a full winter set.

Cheers for any advice,

Ben

 

OK, another half an hour's research and things don't look very hopeful.
I found that the hubs are quite different;

PCD offset C/Bore
405: 4x108 15..22 65.0
5-s: 5x120 18..20 74.0

If anyone has good news that would be great, otherwise I guess it's
off to die kwikenfitten for me...

cheers,

Ben

 

A further issue may be the hub bolts. I seem to remember that the bolts
for my alloys are flat on the contact face, but those for steel wheels
are rounded. I presume flat is so as not to stress the alloy, and
rounded is for best centering.