This is topic Offset & backspace Q??? in forum Tech Talk at Northern California Ford Owners  .


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Posted by Rhombeus50 (Member # 2973) on :
 
What wheel offset is equivilant to a 6" BS?

[ June 27, 2005, 05:54 PM: Message edited by: Rhombeus50 ]
 
Posted by venomous99 (Member # 1917) on :
 
it depends on the width of the wheel to determine offset.

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[ June 28, 2005, 10:46 AM: Message edited by: venomous99 ]
 
Posted by Rhombeus50 (Member # 2973) on :
 
I wanna try those '05 Bullitts or '05 GT Premium wheels on my coupe with the SVO conversion. The '05 Bullitts are 17x8 w/a 45mm offset.
 
Posted by Mr JoCo (Member # 1549) on :
 
So that means that to put 05 bullits on a fox, the inside of the wheel will be 5.79" + 4.5cm (whatever the conversion is) farther from the mounting surface of a previous year bullit wheel.

Hmm so that means it'll tuck more... I got an idea, I wonder if it's a dumb one since I hit that perpelli... I'll save it for later [Whoo Whooooo!]
 
Posted by Luke87GT (Member # 21) on :
 
quote:
Originally posted by Mr JoCo:
So that means that to put 05 bullits on a fox, the inside of the wheel will be 5.79" + 4.5cm (whatever the conversion is) farther from the mounting surface of a previous year bullit wheel.

Hmm so that means it'll tuck more... I got an idea, I wonder if it's a dumb one since I hit that perpelli... I'll save it for later [Whoo Whooooo!]
That's exactly right except you added 4.5cm instead of just adding 1/2 of that. The 94-04 17x8's already have 24mm offset. The 05 rims have a 45mm offset which means 21mm more offset than the old rims. This come sout to roughly 0.84inches more backspacing. Your new BS is 5.72 + 0.84 = 6.56in

This will look all wrong. Your wheels will tuck into the center of the car by close to an 0.84" over the 94-04 wheels. You could use a 3/4" inch spacer if your studs are long enough...

Good luck

[ 07-01-2005, 14:37: Message edited by: Luke87GT ]
 
Posted by Mr JoCo (Member # 1549) on :
 
That's about what I need for a perfect fit in the back. But now the question is would a set of old bullits in front be destinguishablely different paired up with a set of the 05 bullits in the back?
 




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