Re: [Chrysler300] Bias Tires and Longevity

[Pat Grant <grant4405@xxxxxxxxx>]

i bought a hayrake in 1973 with two old bias goodyears on it. they are still on it and i still use it . off season it sits out in the field. certainly not used at highway speeds ;but sure do hit a lot of groundhog holes.


From: C Bilter <cbilter@xxxxxxxxx>
To: 'Ryan Hill' <ryan_hillc300@xxxxxxxxxxx>
Cc: chrysler300@xxxxxxxxxxxxxxx
Sent: Friday, September 2, 2011 3:18 PM
Subject: RE: [Chrysler300] Bias Tires and Longevity


  
Hi Ryan- 

Not sure how many have responded to you off-server, but no one responded
on-server yet. In my opinion, unless your bias ply tires have been
"hermetically sealed in the executive washroom at Funk & Wagnalls" they are
not safe, at least on the highway. Rubber breaks down from exposure to the
air, and deterioration is accelerated by sun (UV rays) and temperature.
They can and will deteriorate from the inside when mounted as well. When
sitting for long periods, bias ply tires will "flat spot" and the rubber
gets hard as a rock. Radials have the added problem of steel belts
corroding, and if they blow the steel belts can also inflict further damage
to an already potential catastrophic outcome.

Some folks say tires used to be better made in the 60s/70s/80s. That is
anecdotal. From a technological perspective, modern radial tires are far
better engineered and safer especially at higher speeds. Just get a high
quality, name brand tire. Better safe than sorry.

300ly,

Carl Bilter

_____ 

From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On
Behalf Of Ryan Hill
Sent: Thursday, September 01, 2011 5:35 PM
To: Ryan Hill
Subject: [Chrysler300] Bias Tires and Longevity

There has been a lot of talk, on and off this listserve, about radial tires
and expiration dates, safety, and performance in the past couple of years.
Out of curiosity, does anyone know if bias ply tires are any more durable in
terms of age than a radial? 

I ask because I have a beautiful looking set of Uniroyal H78-14 on my 1965
300 that I bought for my first 300 back in 1987 or so. They have low milage
but have been mounted on my cars while in storage since about 1990. I had
not planned to drive very far on them, given they're 24 years old, but
wonder if they deteriorate in the same manner radials do? How unsafe are
they? 

My father pulled a classic boat around on some bias ply truck tires from the
early 60's for the better part of 30 years without failure.

Ryan Hill 

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