Good question. But you'll need to ask someone who carries a spare....
Radial tires are supposed to stay on one side of the vehicle. I don't know
how you'd rotate the spare into that arrangement unless maybe you have the
tires dismounted and remounted every time you rotate the tires. Or you
could rotate the spare with just one side, and get longer life out of that
side.
I have positrac for one of my trucks, but its not yet a driver, the axle
isn't under it, and I'm not planning to run the same size wheels or tires
front and rear. I guess I need to think about a spare for that one.
My all-wheel drive Subaru has a space-saver spare. I've never used it, and
hope I never do.
I actually don't carry a spare in my daily driver (AD Suburban). That's
living on the edge, but when I converted to 5-lug wheels I didn't have a
wheel the right size that would fit the truck, and I've not done anything
about it.... I don't think I've ever had it more than 100 miles from home,
and most weeks it runs 20 miles round trip to and from work, and no further.
I don't like carrying a spare in the passenger compartment, and it currently
has a trailer hitch that eliminated the under neath spare carrier. I plan
to remove the hitch and put a spare under there someday.
My backup truck has a spare that just lays in the bed, and is definitely not
the same size as the four on the ground, but it rarely gets far enough from
home that I'm worried about it.
I'm just full of worthless information today!
----- Original Message -----
From: "Jim Wilkerson" <Jim.Wilkerson@sas.com>
To: "Steve Hanberg" <steve@oldsub.com>; <oletrucks@autox.team.net>
Sent: Tuesday, September 23, 2003 8:50 AM
Subject: RE: [oletrucks] Old Tire Sizes
I agree it would be best to have the same size. What are the
recommendations for tire rotation nowadays? For example, could I rotate the
spare into the regular rotation or do right-side tires have to stay on the
right side and vice versa? Seems like I read somewhere that the direction
of rotation has to stay the same.
***********************************************************************
Jim Wilkerson
***********************************************************************
-----Original Message-----
From: Steve Hanberg [mailto:steve@oldsub.com]
Sent: Tuesday, September 23, 2003 10:22 AM
To: Jim Wilkerson; oletrucks@autox.team.net
Subject: Re: [oletrucks] Old Tire Sizes
You might want to check with the manufacturer to see how much difference is
acceptable. I have an all-wheel drive car, and there is a specification
regarding how close to identical the diameter of each tire must be.
But since you've only got two driven wheels, an spare that doesn't match the
rears could always be put on the front, and one of the fronts moved to the
rear, in a pinch.
Probably better to have the right size spare...
----- Original Message -----
From: "wayne osborne" <wayne@chevytrucks.org>
To: "Jim Wilkerson" <Jim.Wilkerson@sas.com>; "Gary Perry" <glperry@fwi.com>;
<oletrucks@autox.team.net>
Sent: Tuesday, September 23, 2003 5:53 AM
Subject: RE: [oletrucks] Old Tire Sizes
Jim,
Seems to me the rule of thumb should be to use the same diameter tire
for a spare regarding a posi rear. Might be hard on the clutch pack in a
limited slip to run any distance with mismatched set. A true posi, where
there is no slip wouldn't be able to handle it very long as you'd probably
bust an axle or the differential before long. I would personally get the
same diameter for a spare.--wayne
At 02:49 PM 9/22/03 -0400, Jim Wilkerson wrote:
>Thanks Gary! And Thanks to Bob Chansler also. According to a tire
>size calculator I found the closest to the original 6.50 x 16 is a
>P215R80 - 16
.
>
>What is the 'rule of thumb' for vehicles with positraction and running
>different size wheel/tire combos on the rear? For example, is it
>absolutely necessary that the spare tire is exactly the same diameter
>as the regular tires? The same circumference? Or is it OK to run a
>completely different size - for short distances? If yes, what is a
>short distance?
>
>Thanks in advance!
>
>***********************************************************************
>Jim Wilkerson
>***********************************************************************
>
>
>-----Original Message-----
>From: Gary Perry [mailto:glperry@fwi.com]
>Sent: Monday, September 22, 2003 1:38 PM
>To: Jim Wilkerson; oletrucks@autox.team.net
>Subject: Re: [oletrucks] Old Tire Sizes
>
>
>I don't know for sure, but think you need 80 or 85 series tire to be
>that tall. Also think only a 195 or such narrow tire to stay orig
>looking. Myself would get wider and smaller diameter, probly for better
>ride. Speedo may be off, but So What, I say!
>
>G. L. Grumpy's
>Old Iron Ranch
>Huntington, IN 46750
>AD trucks and MM tractors
>----- Original Message -----
>From: "Jim Wilkerson" <Jim.Wilkerson@sas.com>
>To: <oletrucks@autox.team.net>
>Sent: Monday, September 22, 2003 12:19 PM
>Subject: [oletrucks] Old Tire Sizes
>
>
> > Does anyone know what the modern tire size equivalent would be for
> > the
>original 6.50 x 16 tires that came on the '53 Chevy AD trucks?
>Assuming a radial, I want a tire with the same diameter and
>approximately the same width. i.e. P205R70 -16 or LT20575-16 or ????
> >
> > Thanks.
> >
> > ********************************************************************
> > **
> > *
> > Jim Wilkerson
> > ***********************************************************************
> > oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
Wayne Osborne
http://www.chevytrucks.org
http://www.chevytrucks.org/wayne
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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