17 inch Mustang rims..

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grassy

grassy

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I just discovered that when I went from front drum to disc on the '75 Duster that I had to move from SBP to LBP.

I had planned on moving to 15s in the back so I have a set of (aluminum ?) adapters to go to the LBP

I was reading the post of Snuffys Duster and he put 17 inch Magnum/300 rims on his car...I was kinda freaking out about the cost of new rims/tires until I remembered that I had a set of aluminum rims / tires off of a '07 Mustang GT. So I tried the fit and the adapter fits perfectly.

I did a search on this site and someone was putting a set of bullets on his car but the rear tires rubbed the springs so spacers were required. If I use adapters, that wll solve this problem. Correct ?

I also tried to find the offset on my mustang rims and I think it is 40mm offset.

Will these fit my car without mods to the fenders?

I am not in love with these rims but it will be a good stop gap measure until I can afford new ones.

Thanks
ian.
 
Yup..that was one of the threads I was referring to..didn't answer my questions though...

Anybody ?

Grassy
 
Typically, mustang rims from that era are 17x8 with a 5.72" backspace.

If that's the size of your rims, and you're running the stock width rear and springs, you'll need about a 1" spacer in the back to clear everything. Most of those adapters are pretty close to 1", so that may be the ticket. You'll also probably need a small spacer (1/4" to 3/8") in the front to clear the tie rod end. Some people seem to be able to use the 5.72" backspace on 17's without the spacer, but others need a small spacer to make it clear.

Also, you'll have to open up the center register of the rims, turn down the outer edge of the brake hub, or use a spacer with a smaller outer register to use the Mustang rims.
 
72blunbly,

Thank-you for your response. You seem to be a very good source of information on this board. I have followed your responses in other threads.

I would rather not be doing this but you cannot argue with free ... we are on a very tight budget here and unfortunately, way behind in our schedule but have great hopes to be finishing this project soon.

If that's the size of your rims, and you're running the stock width rear and springs, you'll need about a 1" spacer in the back to clear everything.

Stock springs, 8 3/4 rear end. oddly enough, sbp. My adapters are 1 1/4 wide so this is a good thing.

You'll also probably need a small spacer (1/4" to 3/8") in the front to clear the tie rod end. Some people seem to be able to use the 5.72" backspace on 17's without the spacer, but others need a small spacer to make it clear.

Is there a special spacer for this or can you use washers ?

Also, you'll have to open up the center register of the rims, turn down the outer edge of the brake hub, or use a spacer with a smaller outer register to use the Mustang rims.

I don't understand the comment of the central register... would you my expanding on that please. The second would be to grind down the edges of the front brake calipers and third, I don't understand either.

These rims have a mustang centerpiece or centercap...is there anything mopar i can substitute with ?

Thanks
Ian.
 
What is the width and backspace of the rims you have?

The 1.25" adapter in the back should put you where you need to be if you've got 5.72" backspace Mustang rims. But there's a few different backspaces for the stock Mustang wheels, so make sure you measure.

As far as the center register goes- the hole for that centercap is smaller on a mustang rim than it is on a Mopar rim. This means that the mustang rim will not sit flush against the hub on your brake rotor. The wheel will hit the outer edge of the hub before the rim is flush against the lug surface, so there will be a gap between the inner mounting surface of the rim and the base of the lug nuts. The caliper is not a problem.

You can use a hubcentric spacer to correct that issue, like these for example...

http://www.ebay.com/itm/2pc-FORD-MUSTANG-94-13-HUB-CENTRIC-Wheel-Spacer-1-4-Inch-/390574334346

Now, I haven't done business with that company, I just searched for a hubcentric spacer. You'd need to make sure that the center hole in the spacer is large enough to fit over the hub on the rotor ( I have no idea if those spacers will actually fit). Most won't, the center bore on the spacer needs to be ~71.2mm.

DO NOT USE WASHERS!!!

Here's a picture from the 17" cobra rims thread

77866244-7E65-41B6-B50E-1077B49F41F6-4173-00000196AB7A47BB.jpg


This shows how the hub has been turned down on a lathe so that it fits the Mustang rim center register. Normally, the rotor would not have a stepped end on it, it would be straight all the way out the the edge.
 
I believe the wheels with 5.72" backspace are from `99 through `05. After `05 they went to a 6.25" backspace or there abouts, which with an A-body rear would likely require about a 1.25" spacer
When I was running an A-body 8.75" rear, I used 3/4" billet spacers which worked fine with 5.72" backspace. The 8.25 rear appears to be a little tighter (narrower) but will still clear -as per my friend's car who ended up with my old wheels and spacers-.
Also the center registers on ford wheels is smaller, so either the wheel registers need to be made larger or the hubs will need to be cut down.
 
grassy said:
72blunbly,

These rims have a mustang centerpiece or centercap...is there anything mopar i can substitute with ?

Thanks
Ian.
Click to expand...

AR Engineering makes a billet center cap or you can use the cap from a chain-link fence post -available at home depot for a couple bucks- ..no kidding!
 
Talk to member michael crawford...he used a fence post cap and a few layers of body moulding tape to make them fit snug. Did i mention they look awesome?!?
 
As far as I can tell, the are 8 inches wide, 6.25" backspace and +45mm offset. Tire are mounted so it is a bit awkward.

I have put a question out on my mustang forum...will correct if I am wrong.

Thanks
Ian.

PS -love the home depot tip.
 
most guys run the 01 style wheels.. they have a 5.72 backspace. i believe the newer wheels have more backspace.


ar engineering center cap.. :)

centercap.jpg


wheels012.jpg




this is the 17x8 with 5.72 backspace rim with a 225/50-17 tire test fit on a 69 dart with stock 8 3/4 abody housing with big car brake big bolt axles.. they fit but may need a small spacer to be safe...

DSC00039.jpg


DSC00038.jpg


DSC00037.jpg


DSC00036.jpg


DSC00035.jpg


DSC00034.jpg


DSC00033.jpg
 
This is, for sure, going to be interesting. They look great on the car. The reason for the '07 is that they are free :)

I am getting the feeling that to be confident, test in place will have to be done.

Thanks
ian.
 
grassy said:
This is, for sure, going to be interesting. They look great on the car. The reason for the '07 is that they are free :)

I am getting the feeling that to be confident, test in place will have to be done.

Thanks
ian.
Click to expand...

If they have the a 6.25" backspace you're going to need bigger spacers. The rear 1.25" spacer might work, but it will be tight on the springs depending on your tire selection. 1.5" would be ideal for the rear.

In the front you're probably going to need to get to the ~5.6" mark. Some folks have run as much as 6" of backspace before hitting the outer tie rod, but most run into issues right around 5.6". I think that there's a few slightly different designs for the lower ball joint steering arm that accounts for the difference, but I don't know which manufacturers allowed for more clearance. You'll have to test fit to know for sure how much spacer you'll need.

The "easiest" way to deal with that would be a 1" spacer up front, the kind with its own lugs. Otherwise, you'd probably need a 1/2" hubcentric spacer, and then 3" lug bolts, and that might still not be enough. A 1" spacer would put you at 5.25" backspace, which should be pretty close to perfect for a 17x8".
 
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