At 09:24 PM 5/3/00 -0400, Matt Ritter wrote:
>
>Well I know for a fact that 300Z's (84-89) have an off set( don't
>know if its + or -. As far as bolt pattern I don't know. Let us know
>how it turns out
>
>linda long wrote:
>>
>> Lister that AutoX their TR6's...
>> I've started to set my '76TR6 up for autocrossing. I've spoken with Chuck
>> at K-speed and he has relayed that many TR6 autocrossers are getting the
>> 16x7 panasports that are designed for 300ZX's. He also reports that front
>> clearance is better with that 16x7's than the 15x7's. This suggests that
>> that stock 300ZX's are compatible with stock TR6 drums and disks. Has
>> anyone else heard this or have information on how I might confirm this
>> through the internet? Another way to get at this is what is the bolt
>> pattern specs on stock TR6's? I can then go to the 300ZX list and ask them
>> for bolt pattern specs on Z-cars. Used 300ZX wheels are much cheaper
($300)
>> on the net than new 16x7 panny's ($700). I'm going to go ahead and get
15x6
>> panny's from K-speed to autox in, but would like to get some "cheap" used
>> 16x7's to experiment with.
>>
Tom... To the best of my knowledge, the bolt pattern on the earlier 300ZX
is the same as the TR6, 4 x 114.3mm. However, I think the offset is
different and you'll probably need to use spacers. The offset is what
determines the depth of the "hole" in the back of the wheel (backspace).
The higher the positive offset number is, the deeper the backspace is and
the more likely the rim is to rub on springs or other suspension parts. As
long as you stay with a wheel that has the same or real close to the same
backspace as a stock TR6 wheel, you can't go too far wrong. According to
an old wheel brochure I have, the 300ZX should use a +12 offset while the
TR6 would be around 0. A spacer would move the Z wheel farther away from
the hub and effectively reduce the backspace to normal. That means longer
and stronger wheel studs will be required, especially for autocrossing.
You might want to talk to someone at K-Speed and/or Spuell and just ask
what's the standard offset for a 7" wheel used with a TR4-6, vs the
standard offset for a 7" wheel to be used with an '85 300 ZX?
G'luck...
Don Marshall
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