There is a guy over on the Samba that makes Hubcentric spacers
specifically for putting different VW Audi and Mercedes rims on a
Vanagon.  His URL is www.t3technique.com
I don't know him and have never used his products but worth a look.

On 16-May-10, at 7:06 AM, Dennis Haynes wrote:

> OEM often make wheel specs a mystery. The Audi A6 and A8 that use
> this wheel
> usually use a 225/60-16 tire. An ideal Vanagon tire in many ways and
> was
> also used on the very late Eurovans. This tire has a native load
> index of 97
> which is the same as the extra load (reinforced) 205/70-14 tires
> Volkswagen
> put on the Vanagons with alloy wheels. The major issue I see here is
> the
> Audi wheel is hub centric, (hub supports and centers the wheel) and
> the
> offset.
>
> Dennis
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On
> Behalf Of
> Kevin Jordan
> Sent: Friday, May 14, 2010 7:16 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Wheel Load Rating
>
> Okay, so let's just use the same rule-of-thumb for the tires.  1600lbs
> per tire load rating.  I still cannot find out what the load rating
> for
> the Audi 16" X 7"
> 4A0601025P alloy wheel is.  Even Audi of America replied with this
> response, "Kevin, thank you for contacting Audi of America. We do not
> have that information here; this address is designed for general
> current
> vehicle information. Please contact your Audi dealer for the load
> capacity; for any additional information you may need on the Vanagon,
> Volkswagen of America would be the best source." -AudiTalk
>
> There has to be a manufacturer's code or specification sheet for this
> wheel out there somewhere...