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Re: Tire & Wheel Size Revisited

To: jon_wissler@pngc.com,
Subject: Re: Tire & Wheel Size Revisited
From: RWM <RWM@rwmann.com>
Date: Mon, 11 Jun 2001 16:14:23 -0400
Interesting.  I run 14x7 American rims and saw the same interference you
describe, on the passenger side brake line, though only after a spirited
day of autocrossing.  (Says something about the degree of loaded flex in
front end, spindles, wheels, combined.)

Since the metal brake lines and balance pipes are to some degree
flexible, and indeed may be bend when installed, I moved the line (just
enough) out of the way and have has no further problems of the sort.  No
impact on braking effectiveness, either.

- Bob Mann, '69 2000 Solex

jon_wissler@pngc.com wrote:
> 
>         OK.  So now I feel comfortable that I finally have the right lug
> nuts for the 14 x 7 panasports.  (7/16 thread, 13/16 head).  So I put the
> suckers back on for the fourth time this weekend to see if the wobble has
> lessened.  It seems as though there is a noise coming from the front end I
> hadn't noticed before, so I pull over to take a look.  It appears that the
> inside rim of the wheel MAY be rubbing on my brake line on the passenger
> side.  Assuming this to be a bad thing, I go back home and crawl under to
> take a look.  The driver's side seems to have adequate brake line
> clearance, but the drivers side is either just barely touching the line,
> or just barely missing the line.  I assume that there is probably some
> moving around that takes place during spirited driving, and therefore, I
> should have SOME clearance there.  So the question is, since this brake
> line has a bit of give to it, can I simply bend it slightly out of the
> way, or will I royally screw my brake hydraulic system up?  These wheels
> by the way are 14JJ7 something, which I now believe to be 14x7 with a 10mm
> offset (J is the tenth letter in the alphabet).  If I had a 0 offset,
> which is what I thought the group said I should have, they would be up
> against my brake lines, which would suggest you can't run a 7" wheel with
> 10 offset up front.  However, if I had a 0 offset, I would most likely
> have problems with rubbing in the back (I don't now), and lord knows what
> up front.  Although, with the wider front flare, perhaps that wouldn't be
> much of a problem.
> 
> Comments?  Solutions?  Words of warning?  Fan mail from a flounder ??

-- 
R.W. Mann & Company, Inc.  > Airline Industry Analysis and Consulting
Port Washington, NY  11050 > tel 516-944-0900, fax 516-944-7280
mailto:info@RWMann.com     > URL http://www.RWMann.com/

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