[Chrysler300] Thinner rims?

[cotejohnr@xxxxxxx]

Tony,
Old Tire Man (below) states that bias rims are thinner in the bead 
area. Does this pertain to our '55 to '65 wheels.? Has anyone put a 
micrometer (or other) on the new wheels being made and compared them to 
a stock wheel?  Does the manufacturer of the new wheels that have been 
made for us know both measurements or are we to assume they are just 
thicker?
John


-----Original Message-----
From: awrdoc@xxxxxxxxx
To: george@xxxxxxxxxxxx; Chrysler300@xxxxxxxxxxxxxxx
Sent: Mon, 29 Jan 2007 9:07 AM
Subject: Re: [Chrysler300] Danger of wheel failure unless the rims are

         Below is an opinion of an old timer:
 that the pressure on
  > the bead area of bias ply wheels is greater when they have radial 
tires
 > mounted on them, what about ³Old Tire Man¹s² quote:
 >
 > Nickname: Old tire man
  > Review: You're neglecting a very important design fact when 
comparing radial
  > and bias tires and rims: How the load is transferred through the 
tire to the
  > rim. Radials transfer the load (vehicle + payload) to the bead of 
the rim
  > and bias transfers the load upwards through the center of the rim, 
ie, bias
  > rims are thinner at the bead area than radial rims. I was there when 
we made
  > the transition to radials in the 1970s and I can't tell you how many 
bias
  > rims I personally have seen 'peeled' at the bead when a radial tire 
was
  > (wrongly) mounted. I won't mount a radial on a bias designed rim, 
but then I
  > have many years of personal (in a professional setting) experience 
to rely
 > on. Safety first.
 > Date reviewed: Nov 24, 2006 10:24 PM
 >
 > This was in reply to an article:
 >
 > Classiccar.com
 >
 > A Tale of Two Tires
 > A case for radial tires on your classic car
 >
  > 
http://www.businessweek.com/@@WsomwGQQ4NgSUwAA/autos/content/may2006/bw20
060
 > 504_512529.htm?chan=autos_classic+cars+index+page_insight

 From: George McKovich <george@xxxxxxxxxxxx>
 Date: Sun, 28 Jan 2007 21:25:00 -0700
 To: <Chrysler300@xxxxxxxxxxxxxxx>
 Subject: RE: [Chrysler300] Danger of wheel failure unless the rims are

  Is there anyone with "scientific" evidence that the wheels from 
1955-1962
  were inherently inferior to those built after that period?? Also, is 
there
  any "scientific" evidence that RADIAL tires put more stress on wheels. 
From
  the stories that have been related thus far, it looks like there are 
more
  failures with NON-RADIAL tires being told. I have been told that the 
side
  walls on a bias-ply tires is stronger than on a radial with a 
comparable
  number of plies.... I was told this is one reason to use bias-ply 
tires on
 my car trailer amd they definitely do seem much firmer in the sidewall
 areas. Anyone with input???

 George



 _____

  From: Chrysler300@xxxxxxxxxxxxxxx 
<mailto:Chrysler300%40yahoogroups.com>
  [mailto:Chrysler300@xxxxxxxxxxxxxxx 
<mailto:Chrysler300%40yahoogroups.com> ]
 On
 Behalf Of Tony Rinaldi
 Sent: Sunday, January 28, 2007 11:52 AM
  To: Lettercars@xxxxxxx <mailto:Lettercars%40AOL.COM> ; Pete Fitch; 
Chrysler
 300 Club
 Subject: Re: [Chrysler300] Danger of wheel failure unless the rims are

 Hi Gil,

  Regarding your awaiting a real tire expert¹s statement that the 
pressure on
 the bead area of bias ply wheels is greater when they have radial tires
 mounted on them, what about ³Old Tire Man¹s² quote:

 Nickname: Old tire man
  Review: You're neglecting a very important design fact when comparing 
radial
  and bias tires and rims: How the load is transferred through the tire 
to the
  rim. Radials transfer the load (vehicle + payload) to the bead of the 
rim
  and bias transfers the load upwards through the center of the rim, ie, 
bias
  rims are thinner at the bead area than radial rims. I was there when 
we made
  the transition to radials in the 1970s and I can't tell you how many 
bias
 rims I personally have seen 'peeled' at the bead when a radial tire was
  (wrongly) mounted. I won't mount a radial on a bias designed rim, but 
then I
  have many years of personal (in a professional setting) experience to 
rely
 on. Safety first.
 Date reviewed: Nov 24, 2006 10:24 PM

 This was in reply to an article:

 Classiccar.com

 A Tale of Two Tires
 A case for radial tires on your classic car

 http://www.business
  
<http://www.businessweek.com/@@WsomwGQQ4NgSUwAA/autos/content/may2006/bw2
006
 0> week.com/@@WsomwGQQ4NgSUwAA/autos/content/may2006/bw20060
 504_512529.htm?chan=autos_classic+cars+index+page_insight

  Regarding the ³K² wheel covers coming off, there are 2 recesses in the 
³K²
  wheel covers that engage the 2 bumps in period Mopar wheels. They are 
on
 either side of the valve stem.

 Regards,
 Tony

  For those that insist on frequent cornering to the limit (not that 
there is
  anything wrong with that!) I would agree stronger rims would probably 
be a
 good idea. As to the assertion about the radial side wall flexing
  ("twisting") being worse for the rim bead area than bias---I'll await 
a real
 tire expert's statement before I buy that.

 However, I think that was a function of the "K" wheelcover's one piece
 construction more than the wheel.
 So there you are---my opinion on the subject and I'm stuck with it!

 300ly, Gil Cunningham
 Chilly Tallahassee, FL

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