Crap. Twice I misused the term backspacing in that post. Good job Don.
instance one:
> I just measured them, and there's only an extra
> 1/4" backspacing. Also, they are 7" wide, where the stockers are 6"...
> so in addition to the extra backspace blah blah blah blah
not extra backspacing, LESS backspacing. extra outboard offset.
instance two:
> I wonder if you've got too
> much backspacing (to the point of negative offset).
too LITTLE backspacing. too much outboard offset
On 10/7/06, Don Rey <radon220@gmail.com> wrote:
>
> WAS: Pros/Cons: 17" Wheel/Tire
>
> Tom, what you posted here just sank in (yeah I'm slow)... I have
> 31x10.5x15 BFG T/A KOs on my 89 dak with no body lift (yet) and I get
> zero tire rub. My torsion bars are cranked up... and I'm using stock
> Jeep steel wheels. I just measured them, and there's only an extra
> 1/4" backspacing. Also, they are 7" wide, where the stockers are 6"...
> so in addition to the extra backspace, the added width brings the
> outboard bead an extra 1" um... outboard. So if you get into tire
> geometry, I'm sure that brings the inner sidewall outboard a bit too.
> These don't sit nearly as wide as Christine's, but fit nicely without
> rub.
>
> Now, before I cranked the torsion bars, I used to rub on the rear of
> the wheel well (I have holes rubbed through my mudflaps).
>
> Where are you closest to rubbing... the treads or the sidewalls? Have
> you tried your tires on different rims? I wonder if you've got too
> much backspacing (to the point of negative offset). The greater the
> outboard (negative) offset of your wheels, the farther the outside
> tread blocks "reach" forwards and backwards when you turn. Hmm did
> that make sense? Walt has a good explanation and illustration of this
> on his site.
>
> A little more on my wheels:
>
> Since the stockers and jeepers all have tires on them, I was only able
> to measure from the outside of the rim, rather than the inside of the
> bead (that's where measurements are typically made from, right?), so
> my backspace measurements may not be entirely accurate, but they
> should at least be consistent enough to compare the two wheels.
>
> Stockers: 15x6 with 4-1/2" backspace (1-1/2" positive offset)
> Jeepers: 15x7 with 4-3/4" backspace (1-1/4" positive offset)
>
> Tom, I'm really curious about the measurements of your wheels now. We
> might have to measure & compare at the bbq! Wait... no that didn't
> come out right...
>
> Don in CT
> 89 Dakota Convertible 318 NV3500 4x4
> 74 Dart Sport 340
> pbase.com/radon220/mopars
>
>
> On 9/25/06, Terrible Tom <SilverEightynine@aol.com> wrote:
> >
> > 32 tall or 11 wide is about the limit on a stock suspension.
> > taller/wider than that and you will see rubbing.
> >
> > Personally, and I'm not trying to tell ya what to do with your truck,
> > but I think wheels that stick out way the hell past the fenders, look
> > really bad. I have 31x10.5x15 Kumho mudders on Chrstine, the wheels are
> > backspaced about 3 to 3.5 inches outwards. I've never really been
> > thrilled with it, but even with a 3 inch body lift, it was what I had to
> > do to keep from having tire rub.
> >
> > http://members.aol.com/silvereightynine/front.jpg
> >
> > Thats a fairly good photo that shows how far out the wheels sit from the
> > fenders. I think if you went 4.5 inches outwards back space... its
> > going to stick out too far and look.... different.
> >
> > --
> > -------------------------------------------------------------
> > Rocks are for skipping... I'm all about the mud
> > 75 Honda CL360, 89 Dakota, 89 Dakota 4x4,
> > 95 Dakota 4x4, 96 Neon, 01 Ram 4x4
> > http://members.aol.com/silvereightynine/
> > AIM & Yahoo: SilverEightynine
> >
> >
>
>
This archive was generated by hypermail 2b29 : Wed Nov 01 2006 - 01:35:00 EST
