Drag Wheels
08-16-02, 07:58 PM
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Drag Wheels
I'm looking at getting a set of wheels and tires strictly for drag racing. I'm looking at the Bart IMCA Comp Wheels from Summit. They come in a 15X8 with backspacing from 2"-5". What size backspacing will I need for an FD? Looking at slapping on some Nitto Drags 275/50/15. Is there any other tires I should be looking at? Thanks ahead for any info.
08-17-02, 10:46 PM
#3
ok for FD this is what I think...
stock wheel is 16 8 +50
to convert +50 offset to backspacing
(8 / 2) + ( 50 / 25.4) = 5.9" of backspacing
looks like your going to need a spacer to run these wheel on FD
I dont know how much extra room FD have so maybe someone can shed some light on it.
for FC
16 x 7 +40 ( 5" backspacing ) (7/2)+(40/25.4)=5
to run 16X8 on FC and keep 5 inch back spacing
(.5*25.4) 12.7 40-12.7= +27.3 offset
but becuase there is room in the rear of FC
you can cut that in half so 40-6.23 = +33 offset
so +33 - +35 offset should fit in the rear with no problem
stock wheel is 16 8 +50
to convert +50 offset to backspacing
(8 / 2) + ( 50 / 25.4) = 5.9" of backspacing
looks like your going to need a spacer to run these wheel on FD
I dont know how much extra room FD have so maybe someone can shed some light on it.
for FC
16 x 7 +40 ( 5" backspacing ) (7/2)+(40/25.4)=5
to run 16X8 on FC and keep 5 inch back spacing
(.5*25.4) 12.7 40-12.7= +27.3 offset
but becuase there is room in the rear of FC
you can cut that in half so 40-6.23 = +33 offset
so +33 - +35 offset should fit in the rear with no problem
08-18-02, 03:40 AM
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ok for FD this is what I think...
stock wheel is 16 8 +50
to convert +50 offset to backspacing
(8 / 2) + ( 50 / 25.4) = 5.9" of backspacing
looks like your going to need a spacer to run these wheel on FD
I dont know how much extra room FD have so maybe someone can shed some light on it.
stock wheel is 16 8 +50
to convert +50 offset to backspacing
(8 / 2) + ( 50 / 25.4) = 5.9" of backspacing
looks like your going to need a spacer to run these wheel on FD
I dont know how much extra room FD have so maybe someone can shed some light on it.
offset=5-(8/2)
Lots of 10" wheels with 50mm offsets work fine on the FD
Backspacing=1.97"+(10/2)=6.97"
I'm assuming that FD's will be more than fine with a wheels with these specs. The math seems to work. Let me know if I'm on the right track.
Got most of my info here:
http://www.scuderiaciriani.com/rx7/wheels.html#OFF
08-18-02, 05:25 AM
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So wouldn't 5" of backspacing be even further away from rubbing than 5.9"? I would think that the limiting factor that I should be concerned with is the front spacing. The 5" backspacing will leave me with about 3" of front spacing. Since the 10" wheels with the 6.97" of backspacing also have about 3" of front spacing, I should be golden. What do you think? Is my reasoning valid?
