Technically speaking that should be true, but on a Vanagon, it's not. I have
done some serious testing to prove this before I released my bar. What is
happening is that the stiffer front anti-roll bar is allowing better
suspension geometry to be maintained which counteracts most of the effects
that a stiffer front anti-roll bar typically induces. Yes, adding a rear bar
is a definite benefit, but adding just the front bar is a big, improvement
and does not induce "massive understeer".

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Ed McLean
Sent: Tuesday, April 25, 2017 10:58 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Thicker anti-sway bar

If you replace only the front sway bar you will get massive under steer.
You need to replace both the front and rear sway bars together for balanced,
safe, handling.

The Addco bars are 1" front and 7/8" rear and were the only ones available
when I bought mine 11 years ago.  The difference in this and stock is simply
amazing.  I also have Koni Red Heavy Track shocks (82-2100 and 82-
2101) which I like better than any other brand for the 2WD Vanagon.  The
Konis are adjustable for rebound but not compression so firmness and control
can be adjusted without increasing harshness.  This might not be the optimum
adjustments for a racing shock but it sure is great for street comfort with
control.  These two modifications, with stock springs, are, in my opinion,
the optimum road suspension for a stock height 2WD Vanagon Westfalia Full
Camper giving crisp, comfortable handling and a smooth ride under most all
conditions.  I also have 215/65r16 Load Index 98 tires.