Re: 67 Wagoneer Questions

[Ken Ames <amesk@xxxxxxxxxxxxxxxxxxxxxx>]

I've seen the diameter vary with the same manufacurer in different tire 
models. A 195/75 in one line would have differnet revs per mile than the 
195/75 in a different line, and not by just 1 or 3 either.  

Ken Ames


Quoting Jim Blair <carnuck@xxxxxxxxxxx>:

> A: I'll have to check around to see if I can find the link.
> 
> 
> From: john <john@xxxxxxxxxxxxx>
> Subject: Re: fsj: Re: 67 Wagoneer Questions
> 
> so a 235/75r15 should be 28.8 inches when new?
> 
> is there a source on line that mandates the official size for each tire 
> size?
> that would be handy to have... I thought it varied a bit from mfr to
> mfr...
> 
> john
> 
> 
> On Mon, 27 Sep 2004, Jim Blair wrote:
> 
> >-->They are 28.8" when new. That was DOT requirement that all sizes be 
> >matched,
> >-->unlike when numbered or lettered sizes were the norm. They were allowed 
> >to
> >-->round up or down back then, and a tire from the beginning of a btach 
> >could
> >-->be up to 1" different than one from the end of the batch! (remember
> >-->Firestone 500s? They were caused by some of the other bigger companies
> >-->manipulating the rubber market so that they got poor quality rubber)
> 
> 
>  
> 
> 
> 


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