Michelin makes a 5.60-14 called WW. Now here's
the weird thing. It also replaces 5.20-14 so it's
a compromize between those two. Tires are not
exactly equal between different manufacturers.
Compare this with anything you wear now and
change to a different brand.
Since we are not going to see this tire on any
new Almera, tire manufacturers are cutting corners
by reducing the number of rear sizes. "Okay, you
want a 5.20-14? Fine we'll just change the dimension
to 5.20-14 in the same tire mould". Even today there
can be a certain difference but if the difference is too
much off, some association for tire manufacturers will
tell them to resize the tire.
I remember this caused some confusion in Sweden
20-25 years ago when people were swithching
over to radials. Department of transportation said
it was accepted that the diameter can be reduced
with 5% because of the different cross section vs
tire width when going from cross ply to radial. The
diameter they refer to is "Rolling diameter" vs static
diameter. On a cross ply tire they are closer to each
other compared to an high profile radial. On a low
profile tire this difference might be as little as 0.01"
Thomas
bob_wilson@agilent.com wrote:
> 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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