Hello Grant S,
Nice name, however this could get confusing. Yes that is outside dia. Whether
a tire is radial or bias ply won't determine the overall dia though is does seem
radials generally tend to be a wider tire. I've found the exception to this is
radial sized the old way such as 7.00 R x 15. As I understand it 7 represents
the tire dia beyond the rim in inches so the overall dia will be 2x7 plus the 15
inch rim or 29". In the case of your 6.50 x 16's it would be 2 x 6.5 plus 16 or
29". Radials sized the new way such as 225R85x15 is a different story. Again, as
I understand it, 225 is the width of the tire in mm and 85 represents 85% of 225
that extends beyond the rim in dia. So, 85% of 225 is 191 mm, times 2 is 382 mm
plus 15" is the overall dia whatever the heck that works out to be. I am
metrically challenged. Someone please correct me if I'm wrong.
Now that I've totally confused you Firestone has a web page listing sizes and
dia's with neat diagrams at www.firestone-usa.com/products_javanav.htm. Also
Wayne Osborne's Member's Page has a pic of my 50 with the 700Rx15 tires I
mentioned. I too prefer the original tall skinny looking tires.
As far as bias ply goes, if they are working good for you why mess with
success. I had a bump steer problem that I could not seem to correct even after
rebuilding the front end and aligning. Radials solved it for me.
G. Simmons wrote:
> Hi Grant:
> You mean the same outside tire diameter? That surprises me. Radials are
> usually lower in profile for a given wheel size than bias plys, aren't they?
> So how can 15 in. radials have the same outside diameter as 16 in. bias
> I have a fairly fresh set of 6.50 x 16s on my 54. I think they handle ok,
> but things could always be better, so I'm very interested in what you're
> I also like the look of the tall skinny original wheels/tires, and would
> like to preserve that. I've been reluctant to consider radials because I
> thought it would change the original appearance too much, but maybe if the
> outside diameter were the same...
> How wide are your 15 in. wheels?
> Grant S.
> ----- Original Message -----
> From: Grant Galbraith <email@example.com>
> To: Ronald Tofani <firstname.lastname@example.org>
> Cc: <email@example.com>
> Sent: Friday, November 05, 1999 4:54 AM
> Subject: Re: [oletrucks] wheel and tire change
> > What size 15's are you taking off. My 7.50Rx15 tires are the same dia as
> 6.50 x
> > 16's. For me nothing improved the handling of the truck as much as putting
> > radials on. (except the 1 and 1/8 inch sway bar)
> > Grant 50 3100
> > Ronald Tofani wrote:
> > > Hello all!
> > >
> > > more questions
> > >
> > > I am about to take off the 15" radials and chrome wheels and replace
> > > with 600x16 original tires. How will this affect the perfomance of my
> > > 3100? Will it handle well and will I get more top end out of it? Now
> > > good for about 55mph and it feels over reved..
> > >
> > > Does anyone know what to use for beauty rings and does anyone have a set
> > > sale?
> > >
> > > Thanks
> > > Ron from Vt
> > >
> > > 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
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959