Look at the back side of the wheel for the ET #. This is the offset and
stock is 30, mine are 23 and fit very well, and are 16". As BenT has said, I
think you can use up to 45 without problems. As Chris suggests, a 215/65-16
(the size I'm using) is a good sized tire for the 16" set up. It usually
results in about a 27" diameter, which is about 1.3" over stock so it does
"hit" your power/torque. Essentially changes the gearing at the road and
this is noticeable on 90hp motors.
Some pix here of the van/wheels:
http://groups.msn.com/BobsPhotoShare/87westysyncro.msnw
Bob Stevens
'87 Westy Syncro
"Passion Fruit"

In a message dated 12/9/06 11:10:50 AM Eastern Standard Time,
jack007@COMCAST.NET writes:
 > I was offered a "Free" Set of 16" RIMS that are a direct bolt on, and
 > wondered if that would be a good move to take and if so which tires and
size
 > should I go with?
 >
215-65-16

i have 215-75-16 on my doka..and they dont rub..  but then its a '85
(highest
ride height year for 2wd) and not a heavy westy...

chris