Theo,
Thanks. Just what I needed.
Looking at the Superlite site I figured out (finally) that "Offset" is in
the eye of the describer, but "Backspace" is the important measurement.
Their's is @ 4" fo the 6" wide x 15" rim (offset 24mm if I remember
correctly). The stock 4 1/2" rims have about the same backspace. So no
danger of interference on the back side, but the front side sticks out a bit
further.
Backspace, BTW is measured differently than offset. Offset is to the tire
lip (inside of the rim, backspace is to the outside of the rim. Or I think
that's how it works.
So when I set the jig up for 4" backspace (implies 3" "front space on a 6"
rim because we're measuring outside edge to outside edge) a 24" diameter
tire is too close (but not interfering), and a 23 1/2" diameter tire looks
like it'll work. I hope.
Hard to tell because even with the engine in the car I don't get much spring
compression. It looks like a 195/55 R15 will work at 23.4" diameter, but
I'll test it on the front before I install tires on the rear. I'd really
like a bit less footprint on the front for easier steering.
Tom
On Mon, Aug 9, 2010 at 10:29 AM, Smit, Theo <Theo.Smit@dynastream.com>wrote:
> Many tires, even though they are listed with the same nominal 205mm section
> width, vary widely in the shoulder profile.
> It's tough to figure out where the shoulders of the tires are going to be
> without having an actual tire mounted on a rim of the correct width.
>
> If you're going to a larger diameter and push the section width on the
> tires then you'll very likely have to trim or roll the front fender lip and
> the rear edge of the front valence.
>
> I'm running 205/45-16 tires on 7" Mustang rims (39 mm offset, IIRC) with a
> 7/16" spacer and then the 1/4" brake hat. So that effectively takes out
> about 18mm of the offset. I had to trim the valence to make that work...
>
> The offset specified for the Panasport wheels is a stand-alone measurement
> - not added to the OEM value.
> Theo
>
> > -----Original Message-----
> > From: tigers-bounces@autox.team.net [mailto:tigers-
> > bounces@autox.team.net] On Behalf Of Tom Parker
> > Sent: August 8, 2010 4:25 PM
> > To: LIST TIGER
> > Subject: [Tigers] Rims and Tires
> >
> > So I want to put bigger feet on the Kitty. Lots of reasons, but the
> > basic
> > plan is to someday upgrade the brakes, either to Dale's front / rear
> > disk
> > setup or the Wilwood setup Tim Suddard mentioned recently in Classic
> > Motorsports and Wilwood confirmed is in the works. My personal
> > experience
> > tells me stopping is good. Almost as good as going fast, and maybe
> > better.
> >
>
>
>
>
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