Your tire's stiff sidewalls are working like they should - really
contributing to stability,
And at those kind of pressures ( measured cold ) having more pressure in the
front instead of the rear probably doesn't matter,
But there should always be a bit more in the rear tires, like 4 psi more. 

See if your steady  state corning isn't more stable with more pressure in
the rear. 
( less pressure in the rear contributes toward oversteer, which you don't
want - that loose back end feeling - but as I said at such high pressure the
affect might be less noticeable )
scott
www.turbovans.com 

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Don Hanson
Sent: Tuesday, September 11, 2007 7:40 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Significant improvment: Less wind deflection

  I've deleted the digest in which someone suggested I might up my tire
pressure to help with directional stability.  So I can't thank you, by name,
but thank you, it really helped.  I went from about 39f/48r to 58f  and 54
r...Since everyone's actual weighed numbers showed a slight front bias
rather than a rear bias like VW seems to think with their "Door Jamb"
recommended pressures..My tires, Nankangs with stiff sidewall and load rated
correctly for our vans, they say on the sidewall "max load..XXXXlbs at
65psi, cold"  So 58psi seemed reasonable.  And, by golly, now the van, while
it still 'feels' the big gusts, it isn't blown off course, it just kinda
'head-fakes' then resumes it's proper course.  Cool.
  Thank you, mystery poster..
  Don Hanson