I found this web site that has a bit on tire size conversion, but not our
exact conversion, of course. Some interesting info though.
http://www.tirerack.com/tires/tiretech/size_conversion.htm
-Mitch
'69 1600
-----Original Message-----
From: owner-datsun-roadsters@autox.team.net
[mailto:owner-datsun-roadsters@autox.team.net]On Behalf Of
bob_wilson@agilent.com
Sent: Monday, August 28, 2000 7:47 PM
To: datsun-roadsters@autox.team.net
Cc: csp311@telia.com
Subject: RE: 5.60 - 14 tires
More tire info. Sidney Raper suggested checking with Coker Tire.
I did and they sell a 560-14 in a BF Goodrich. But when I looked
at the details of this tire, it stated it really was a 590 width
(not 560), and that it's OD was 24.6". (Coker is at Coker.com).
So to adjust this to our 560-14, I tried the following:
5.90" x AR x 2 + 14 = 24.6"
Solving for the aspect ratio, AR, I get 89.8%
Now, using 89.8% for our 5.60 tires, I get a tire OD of:
5.60 x 89.8% x 2 + 14 = 24.1"
So now I wonder if the Michelin cross reference chart
that Thomas saw was really for a 590 and not a 560.
Thomas, can you double check this????
Bob Wilson
-----Original Message-----
From: datsunmike [mailto:datsunmike@nyc.rr.com]
Sent: Monday, August 28, 2000 4:24 PM
To: bob_wilson@agilent.com; datsun-roadsters@autox.team.net
Subject: Re: 5.60 - 14 tires
You're not the only confused person here!!!!!!!
----- Original Message -----
From: <bob_wilson@agilent.com>
To: <datsun-roadsters@autox.team.net>
Sent: Monday, August 28, 2000 3:55 PM
Subject: RE: 5.60 - 14 tires
> Well, to you tire experts, I am still quite confused.
>
> 155/70-14 calculates to 22.54" (155mm=6.102" 6.102*0.7=4.27 4.27*2=8.54
> 8.54+14=22.54")
>
> Yet William says this should be 23.5"
> Thomas says it is 645mm or 25.39"
> Dan said he used 175/70-14 or 23.65" (and this was the best match to
> original)
> I calculated 5.60-14 to be 22.74"
> Thomas Walker suggests a 185/60-14 or 22.74"
>
> William says below that anything over 24" will hit the fender lips
>
> How about I just average all the answers and try to match that!!!
> Just kidding. I'd like to go with Thomas Walker (if that is his final
> answer) since
> the 185/60-14 seems to match the 5.60-14 perfectly but then Thomas [not
> Walker] says that I am not correct in using 78% for the 5.60-14
calculation.
> So I'm back to square 0.
>
> Still confused.
>
> Bob Wilson
>
>
>
>
>
>
> -----Original Message-----
> From: William Hatfield [mailto:jhatfield@zianet.com]
> Sent: Monday, August 28, 2000 12:39 PM
> To: bob_wilson@agilent.com; datsun-roadsters@autox.team.net
> Subject: Re: 5.60 - 14 tires
>
>
> Hello: 560-14 equals 155/70-14. The original tire measures 23
> 1/2" in diameter and had a tread width of 4". not much tread huh?
> Anything over 24" diameter will rub the fender lip during turns on
> most roadsters, but wider thread widths will clear. HTH
> Bill 66&67spls in NM
> ----- Original Message -----
> From: <bob_wilson@agilent.com>
> To: <datsun-roadsters@autox.team.net>
> Sent: Monday, August 28, 2000 9:49 AM
> Subject: 5.60 - 14 tires
>
>
> > HI list,
> > The stock tire that is listed on the original spec sheet for the
> roadsters
> > is 5.60 - 14.
> >
> > Does anyone know what the final tire outside diameter was? Some
> have said
> > that when the aspect ratio is not given (the 2nd number in the 3
> number
> > designation) that you are to assume 80% (or 78%). Using this
> results in an
> > outside diameter of the wheel/tire of around 23".
> >
> > Yet people on the list have discussed wheel/tire combos that result
> in more
> > than 24" outside diameter.
> >
> > I can't seem to find any description of this old numbering scheme
> (x.xx - yy
> > versus the new scheme xxx/yy - zz).
> >
> > Bob Wilson
> >
> >
> >
> > -----Original Message-----
> > From: Fred_Katz@ci.sf.ca.us [mailto:Fred_Katz@ci.sf.ca.us]
> > Sent: Friday, August 25, 2000 10:19 AM
> > To: Chris
> > Cc: Datsun roadster list
> > Subject: Re[2]: Wheel Offset
> >
> >
> > Chris,
> >
> > Go with CDM on this one. Not all Panasports bolt right up on our
> roadsters
> > without interference. Les & Dennis will do it right for you. I don't
> know
> > that Dean wouldn't. But CDM went out of their way to explain what
> works
> > best for me, and they know Panasports. I would have their Panasports
> on my
> > '66 if I didn't end up getting Libras after admiring Calspeed's
> Libras.
> >
> > Fred
> > BADROC
> >
> > ________________________ Reply Separator __________________________
> > >Subject: Re: Wheel Offset
> > >Author: Dennis Currington <dc311@mail.com>
> > >Date: 8/25/2000 8:26 AM
> > >
> > >Chris wrote:
> > >
> > >> Let's all chant the mantra . . . Panasport, Panasport, Panasport.
> > >Dean at > Fairlady has 'em. www.datsunparts.com on the suspension
> > >page.
> > >
> > >AND SO DOES LES & DENNIS AT CDM :-) at classicdatsun.com.......
> > >
> > >Dennis
> > >--
> > >Dennis Currington
> > >San Diego
> > >Datsuns.net
> > >
> >
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