Re: [Chrysler300] tires and rim

[Rich Barber <barber@xxxxxxxxx>]

The 1955 Service Manual adds:  "Refer to Figure 1.  These wheels are 
designed to provide added protection in case of a blow-out or rapid 
deflation occurs.  The safety feature is a raised portion of the wheel 
rim between the flange and well.  This raised portion tends to hold the 
tire in place even if rapid deflation should occur."

Viewing my 1955 rims, the raised portion is obvious but the raised 
portion is exaggerated in Figure 1 for clarity.  The net result is that 
the ID of the tire fits into a shallow depression in the wheel.

I remember changing tires on these safety rims was a little more 
difficult and that it took a goodly overpressure to get a tire to seat 
in the grooves--with a BANG!

Any replacement wheel should probably have this feature.  I don't know 
if the industry adopted this feature on wheels.

C-300'ly
Rich Barber
Brentwood, CA
1955 C-300

Bob Merritt wrote:

>A club member without email (he lives in a cave) sends me this to post 
>regarding tires and rims:
>
>This excerpt is from the 1955 Chrysler owners manual. All Chrysler products 
>from this year on had the "Safety-Rim Wheels". Just as it says, the tire 
>will not come off the rim due to tire failure. All other manufacturer's rims 
>do not have this feature. Nor do after market rims. This feature is 
>exclusive to Chrysler even today. Think very carefully about the safety of 
>your valuable car under these circumstances, no matter what "guarantee" you 
>get for replacement rims.
>
>"Your Chrysler's TUBELESS Super Cushion Tires are of the latest, most 
>advanced design--quieter, lighter weight, cooler running and give your car 
>better traction. With "Safety-Rim Wheels, they give you unmatched protection 
>against sudden tire failure.
>  In case of a severe puncture which allows all the tire's air to escape 
>immediately, the "Safety-Rim Wheel" will hold the tire to the rim, enabling 
>you to bring your car to a smooth, controlled stop".
>
>
>  
>






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