Re: IML: cracking wheelsd - Radials

["Bill Watson" <wwatson5@xxxxxxxxx>]

The switch to radials occurred in the 1970's.  Imperial first adopted
radials as standard equipment in 1974 - LR78x15.   The New Yorker adopted
JR78x15 the same year.

In the late 1960's manufacturers adopted belted tires, usually polyglas, but
they still had biasply sidewalls.

The switch from letters denoting the tire size to metric occurred around
1978-1979.  Thus a GR70x15 became known as a 225/70Rx15.

Bill
Vancouver, BC




----- Original Message ----- 
From: Cebuisle2@xxxxxxx
To: mailing-list@xxxxxxxxxxxxxxxx
Sent: Sunday, March 13, 2005 7:14 PM
Subject: IML: cracking wheelsd


Thanks guys, for the input. It must have been the radial tires I installed
on the 65. Don't remember just when the manufacturer switched from bias
plies to radials-must have been around the mid sixties. As I mentioned, I
solved the problem by installing earlier rims (1955's) on the car for trips.
Never had one crack. Perhaps there was more metal in the earlier wheels.


TED



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