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Wheel/tire combo: 16x7.5, 35mm offset, Dunlop SP8000 225/40-16

From gti-vr6-owner@dev.tivoli Thu Oct 29 18:20 CST 1998
From: "Holland J. Phillips" <hjp@pacbell>
To: nguyenk@washpost
Subject: Re: [gti-vr6] wheels and tires
Date: Thu, 29 Oct 1998 16:16:39 -0800
 
&#110;guyenk&#64;washpost<img src=/i/dc.gif border=0 width=35 height=15> wrote:

> Anyone running 225/40-16 with Eibachs or any other short springs? If so, is
> there any clearance problems? thanks

I run 225/40-ZR16 Dunlop SP-8000's on 16x7.5" 35mm offset wheels.  When
I was running Spax adjustablesand Neuspeed progrresive springs, they
would VERY occasionaly rub a tiny bit in the rear, but only with extra
weight in the rear seat or trunk, only when hitting big dips or bumps at
high speed, and not bad enough to even leave a mark on the tire
sidewall.  However, now that I have Ground Control coil overs on the
Spax, (200 in/lb in the rear, linear rate),
with the ride height adjusted to the same as it was with the NS springs,
it rubs a lot more.  I haven't been able to figure out why, since, in
theory, the NS springs don't come close to that rate even at the high
end of their progression.  I'm going to switch to 225 in/lb springs in
the
rear, and Koni adjustables, (my front Spax are blown, and Spax can't
supply warranty replacements for a while, since they are redesigning
them to prevent the blow out syndrom), and see if that helps.  They
still only barely mark the tire sidewall, but it bugs me, and if it
happens in a turn, can upset the balance of the car.
BTW, I am going to use A2 front strut housings with the spring perch cut
off, and a Ground Control lower support ring welded on, and then powder
coated Koni yellow.  Then I'm putting Koni Corrado G60 adjustable
inserts in, which have higher compression dampening than the GTI VR6
Koni sealed struts.  Also, the G60 inserts are revalveable and
rebuildable, where the regular A3 VR6 Koni struts are not.  Ground
Control will revalve the inserts for $75 each and they have a shock dyno
to verify the dampening rates.  GC says the standard G60 compression
rate is enough to handle at least 350 in/lb springs, and probably more
(I'm running 300 in/lb in the front, now).

Sorry for the long reply, but I cut and pasted it in from a previous
message...

Andy, maybe this one needs to hit the archives under wheels, tires, and
suspension headings.  It seems to be a frequent question on the list,
lately.
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