Is a 1" spacer enough?

[Super Blue 72]

Hi guys, I know there have been threads on whether or not spacers should be used, this is not the question.

The question is, if I'm going to attempt to use rims with a 2.5" center hub hole (Ford rims in question) and the front disc hub on my Challenger is 2.75", is a 1" spacer enough?   

I thought I heard a 1" will work but the hub width is 2.75" and the hub HEIGHT is also 2.75" which after the spacer is installed leaves 1.75" of hub height still exposed.  I don't see how that will also the Ford rims with a 2.5" center hub hole to fit.

Anyone have any insight?  Thanks in advance.   

[dodj]

Won't fit.
Most e-body rotor hubs I've come across seem to come in at 71.4mm. Hub diameter on your wheel is 63.5mm. Just aint gonna go. 
Unless you're gutsy enough to go for 2.75" spacers? Might need fender flares too. 

[cudazappa]

You will need the snout of the rotor (the exposed part after the spacer) or machine the rims.

I just measured my 15x7 steel rims.  Center register is about 2.78"
Measured my 17x9 SVT rims.  Center register is about 2.75"

I machined about .030" off the rotor's register diameter all the way back to the studs (I didn't press them out).

I had a set of 16x8 Conquest/Starion rims and remember boring them considerably to get them to work on my Challenger.  They were about 2.5" register.

I'd be wary of any "Mustang" rim with a register smaller than 2.75".

[Super Blue 72]

Thanks for the replies guys! 

cudazappa, I think I remember your pic from the other thread I started.  Those are nice rims.  I wish there was a simpler way.  I thought a low buck way to 17" rims was to use Ford rims and every so often on craigslist I see a set of the 2003-2004 Mach 1 rims that look like Magnum 500s and get tempted to make them work but I don't wan't to machine the rotors and such.

I'm surprised the center register on your rims is 2.75".  I assumed all the Ford rims had a center hole of only 2.5"

Do you know if the Mach 1 rims are 2.75" as well?

Thanks!

[cudazappa]

The common thing to say is that Ford's have a 1mm smaller register.  In reality, with clearances and such, (and the fact these are American Companies) its 1/32".  (unless ford measures their register in mm now, but our classic mopars are definitely in inches)

[dodj]

In reality, with clearances and such, (and the fact these are American Companies) its 1/32". 

I got used to multiply or dividing by 25.4 because there seems to be no rhyme or reason to stating hub bore. Some go in inches others in millimetres. I would like them to just decide on one way or the other and stick with it.

My new wheels are AR mustang TQ Thrust wheels and they have a 2.8" bore, online you find them marketed as having a 71.4mm bore.
Made me think of the box my wheels came in. In huge letters it says 'AMERICAN RACING', then below it in somewhat smaller letters, 'Made in China'. 

[ChallengerHK]

The common thing to say is that Ford's have a 1mm smaller register.  In reality, with clearances and such, (and the fact these are American Companies) its 1/32".  (unless ford measures their register in mm now,

When I was working at Ford and they were struggling to build their "world car" that could be sold through any market (i.e., Mazda, Jaguar, Land Rover, Aston Martin) they had moved to metric to facilitate that strategy.

[Super Blue 72]

Still thinking about it....if there's a low buck way to do it.  I guess if I had to buy spacers it'll still cost me at least $100+ for even the cheapest spacers unless craigslist comes to the rescue.  I would venture a guess that machining will cost me less than that if I had to machine the rotors provided I can find a place locally. 

Still would need the 1" spacer for the back space though...

Here's a pic of the rims in case you were wondering.  Look sorta like Magnum 500s but not as much deep dish to them.  I have seen these rims as low as $275 for a set of 4 with a little road rash...average about $400 a set....

[cudazappa]

The Mustang Magnum 500 rims that I had had the same register size.

But there was no way to get the 10.5 wides in the back without cutting axles or tires (or relocating springs).

I have a pic somewhere of trying to fit them...

[Super Blue 72]

   Those rims/tires are 10.5"wide?  I thought maybe like 8-9" wide, yes?

[dodj]

They came in 8, 9, & 10.5. The three common mustang sizes. 6"-7" of backspace on the 10.5's

[Super Blue 72]

Wow!  Didn't know they came that wide.  I guess from pics of those 2003-2004 rims they didn't look that wide.

[cudazappa]

yes, you could special order the 9 and 10.5 from the dealer.  Parts counter wheels.

[Super Blue 72]

Cool, thanks for the info guys!