[FC] FC wheel sizes, now mount and remove tire from the back side of the rim...

Ron corvanatics@corvair.org
Fri Feb 11 21:08:03 2005


The tires need to be mounted from the back because on the front, it's too 
long a stretch to the groove that the bead needs to go into when mounting 
and the tire gets damaged.  I had a dealer ruin a full set of new tires when 
the installer forced them over the front face.  I got an appointment with 
the manager, showed him the damaged sidewalls and without any comment, he 
had the installer install another new set from the back!
RonH

----- Original Message ----- 
From: "Merv Krull and or Loretta Prosser" <krupross@sunwave.net>
To: <corvairs@cybrus.net>; <corvanatics@corvair.org>
Sent: Friday, February 11, 2005 5:36 PM
Subject: [FC] FC wheel sizes, now mount and remove tire from the back side 
of the rim...


> Superb reference Bryan! I was referring to Jim Davis' comment from 
> below.... "This is why the tire must be mounted and removed from the back 
> side of the rims." I am still in the dark..... Jiiiiiimmmm? Please 
> enlighten.....
> thanx
> Merv Krull
> Salmon Arm, BC
>
>
> ----- Original Message ----- 
> From: "Bryan Blackwell" <bryan@skiblack.com>
> To: <corvanatics@corvair.org>
> Cc: <corvairs@cybrus.net>
> Sent: Friday, February 11, 2005 6:29 AM
> Subject: Re: [FC] Not one, not two, but THREE rim sizes for FCs!!!!
>
>
>> No, not mounting, it's how you measure.  Take a look at the diagrams on 
>> my tire page:
>>
>> http://autoxer.skiblack.com/tires.html
>>
>> Backspace does not equal half the offset.  I think Dale confirmed the 
>> stock FC wheel backspace is 3 1/2" already.
>>
>> On Feb 10, 2005, at 10:59 PM, Merv Krull and or Loretta Prosser wrote:
>>
>>> I am curious about having to mount the tire from the backside of the 
>>> rim.... I guess I do need a picture...???
>>> Merv Krull
>>> Salmon Arm, BC
>>>
>>> ----- Original Message ----- From: "Bryan Blackwell" 
>>> <bryan@skiblack.com>
>>> To: <corvanatics@corvair.org>
>>> Sent: Thursday, February 10, 2005 5:57 PM
>>> Subject: Re: [FC] Not one, not two, but THREE rim sizes for FCs!!!!
>>>
>>>
>>>> A small correction - the rim width is at the bead, but the overall 
>>>> width is greater, usually by 1/2" or so.  Thus, the backspace for the 
>>>> stock wheel is more like 3 1/2".  I have a stock rim, I'll measure when 
>>>> I get a chance.
>>>>
>>>> --Bryan
>>>>
>>>> On Jan 29, 2005, at 12:58 PM, James Davis wrote:
>>>>
>>>>> Offset is positive  thus the back space is 2.5 (half of the width) 
>>>>> plus the offset or 3.06 inches.
>>>>> The rims are quite unique looking as the depression in the rim is 
>>>>> toward the back edge.  This is why the tire must be mounted and 
>>>>> removed from the back side of the rims.  Need a picture?
>>>>> Jim Davis
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