Date: Fri, 18 Dec 2009 09:24:21 -0700
Reply-To: Bob Stevens <mtbiker62@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Bob Stevens <mtbiker62@GMAIL.COM>
Subject: Re: Syncro Tire Diameter
In-Reply-To: <25387.97862.qm@web51505.mail.re2.yahoo.com>
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On Fri, Dec 18, 2009 at 7:06 AM, Anthony Egeln <regnsuzanne@yahoo.com>wrote:
> The conventional wisdom on syncro tires is that they should be virtually
> identical in diameter, to prevent spurious activation of the VC. I believe
> it has been said that the diameters should not vary more than 3/8 of an
> inch.
>
The "tech" info says 3mm. Waaaay different than 3/8".
>
> But consider this: What if the inflation of the 4 tires is not equal,
> which is often the case? Wouldn't that affect the diameter by easily 1/2 to
> 3/4 of an inch?
>
Where did you get that "factual/actual" information? Did you measure the
diameter? Or are you creating a scenario just for discussion purposes?
Anyone choosing not to do proper maintenance of their Syncro can develop
improperly inflated tires, but that's all that is. Laziness can cost $1000
for a VC ... not my choice. Same with improperly aligned front/rear ends
which destroys tires and begs for VC and $$ problems.
>
> Here's my dilemma. On my van I have the Bridgestone Dueler AT Revo, in the
> 225-70R-15. Bridgestone has discontinued this size....though not the Revo
> model. I have 3 nearly new tires, but one tire (and the spare) are worn a
> good deal on the outer 1 inch or so. This is from when they were on the
> front with a marginal alignment, since adjusted. Although the center, and
> inside, of these two tires is very good, the conventional wisdom says I
> really need two more tires in exact diameter, and I can't get them in the
> Revo.
>
> Bridgestone recommended a Firestone tire that was similar to the Revo. My
> question for the list is this. Can I substitute 2 new tires of a similar
> tread and diameter to the Revos in a 5 wheel tire rotation without cooking
> my VC? Right now I hate to throw away 3 perfectly good tires...to say
> nothing of spending $600 + on new replacements.
>
This is all due to owning a Syncro. Sell the old tires and get new one's, or
be prepared to deal with getting a replacement VC (IF) it gets destroyed.
Option: get a decoupler and a solid shaft, put them on and sell the VC while
it's good, if it is now.
You sound to me like you're trying to justify not abiding by what you have
already called "conventional wisdom". I'd call it facts about owning a
Syncro.
bob
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