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Old 10-10-2016, 06:03 AM   #1
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Wheel Spacer Or Not?

So I am considering going with a set of 35mm Wheel Spacers on the back of my 13 GT with stock wheels. MY question is, has anyone on here done this with Stock 18" wheels? If so could I get some pics posted up? Also has anyone had any issues with them? Oh and one more question lol, should I go with 25mm or the 35mm spacer? Thanks guys!
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Old 10-10-2016, 07:45 AM   #2
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Had them on my 95. Kept breaking wheel studs. Will never use them again.
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Old 10-10-2016, 12:08 PM   #3
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I've heard nothing but horrible stories about wheel spacers, that they break other components on the suspension (wheel studs, for example). I can't imagine they would be good for handling, either. Never used them myself though. I would recommend that you just invest in wider wheels/tires in the back if you are going for the look.
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Old 10-10-2016, 12:16 PM   #4
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I would only ever use a small hub centric spacer and no more than 5mm on stock studs. If you did ARP studs you could use a little more
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Old 10-10-2016, 12:46 PM   #5
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Nothing wrong with good quality billet alum. wheel spacers when installed properly.
Cast alum. spacers and spacers with over sized or universal stud holes will absolutely break studs.
Road race cars and oval track cars use them constantly and have zero issues and they have more power and traction and corner harder that any street car ever will.
I have raced professionally for decades and know this to be true.
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Old 10-10-2016, 12:48 PM   #6
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Quote:
Originally Posted by Fabman View Post
Nothing wrong with good quality billet alum. wheel spacers when installed properly.
Cast alum. spacers and spacers with over sized or universal stud holes will absolutely break studs.
Road race cars and oval track cars use them constantly and have zero issues and they have more power and traction and corner harder that any street car ever will.
I have raced professionally for decades and know this to be true.
While this may be true, real racers will spend the cash on reinforced wheel studs and quality spacers. Most mustang owners will hit up amazon or American muscle for the cheapest ones available and just slap them on without a care
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Old 10-10-2016, 12:56 PM   #7
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I too agree. I ran a 1 inch spacer on the rears for about 4 years. Never had a problem. I invested in correctly offset wheels and no longer needed them. For style purposes, not bad. But personally I don't think I would have run these at the track. Too risky for my taste. I'd say save your money and get wider tires if that's what you're going for. Peace of mind and they'll look sick.
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Old 10-10-2016, 01:05 PM   #8
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The key take away here is quality parts installed correctly.
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Old 10-10-2016, 01:31 PM   #9
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I have run hub centric 25mm spacers on the rear of my 2000 GT for 5 years. The car is a street car and tracked on weekends including a track day at Lowes Motor Speedway at higher speeds. The rear studs are stock and original. I have never had a problem. I have since went with a wider wheel and different offset and have removed the spacers as a previous poster suggested. I also run 25mm hub centric spacers on the rear of my 2015 GT which I occasionally track. Purchase good quality hub centric spacers and you will not have any trouble.
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Old 10-10-2016, 01:35 PM   #10
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Never Ever on the Front Steering wheels,
Like everyone tells you, CHANGE THE STUDS on the rear drive wheels.
Torque them properly and recheck them after about fifty miles.
And "DON"T FORGET THE LOCTITE.
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Old 10-10-2016, 01:40 PM   #11
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Quote:
Originally Posted by ronnie948 View Post
Never Ever on the Front Steering wheels,
Like everyone tells you, CHANGE THE STUDS on the rear drive wheels.
Torque them properly and recheck them after about fifty miles.
And "DON"T FORGET THE LOCTITE.
Ronnie
This ^
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Old 10-10-2016, 01:44 PM   #12
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Here is a 10 year old 1 1/4" thick spacer from the rear of my 700 rwhp mustang gt.
While I had it in the shop awhile back the mechanic slid it into a curb during a test drive and broke the wheel, bent the axle and snapped the rotor.
The only part that did not break was the spacer. It is still on the car today.
I also have had them on the front for 10 years. Zero issues.
I've been using spacers since the 1970's with no problems.


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Old 10-10-2016, 01:50 PM   #13
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Old 10-10-2016, 01:56 PM   #14
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Fabman, any chance you know the brand and/or model of the spacers you use?
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Old 10-10-2016, 02:06 PM   #15
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Quote:
Originally Posted by KevinP View Post
Fabman, any chance you know the brand and/or model of the spacers you use?
Got them off eBay.
As long as it's a 6061-T6 aluminum spacer you will be fine.
The spacer is vastly stronger than most wheels will ever be.
Hubcentric spacers are even better.....but this one was a cheapie and you can see how strong it is.
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Old 10-10-2016, 02:17 PM   #16
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Spacers are broken down into two groups:

The kind that slip over the studs and the kind that have a set of their own studs as pictured above. Either is fine if used properly.

The slip over kind need to fit the stud properly. If the hole is too big it will not support the stud and the studs will break. If the holes fit snugly it will be as strong or stronger than the wheel. The problem is that the studs are only so long so longer studs must be used at some point, or the dual stud setup like above should be used. Don't bother to loctite the studs because as soon as you re torque the spacers the bond with the loctite will be broken and made useless. Just buy good spacers, make sure they stay tight and don't worry about it.
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Old 10-10-2016, 04:27 PM   #17
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Here is the brand I'm using

https://coyoteaccessories.com
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Old 10-10-2016, 04:49 PM   #18
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Quote:
Originally Posted by Road Dog View Post
Good choice.



This is the type to avoid as I mentioned earlier.


They are cast aluminum and the holes offer no stud support.
These are what gave spacers a bad name as plenty of them have failed over the years.






These are made by Sparco. This is typical of what a road race car would use.
Notice how the hole fits the stud snugly....this is an acceptable and very common method as well.
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Old 10-10-2016, 08:08 PM   #19
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Just bought these from ebay for $70
http://vi.raptor.ebaydesc.com/ws/eBayISAPI.dll
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Old 10-10-2016, 09:26 PM   #20
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Lots good info thank you. Fabman those billet ones are the ones I was considering. So I do plan on getting wheel and tire package but that want be for a year or so. Meanwhile I think I give it a try, I don't road race or anything like that but do plan on hitting the drag strip but again that won't be till next year. I figure $70 for spacers and if need be I can purchase arp extended studs for 139.
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Old 10-10-2016, 09:29 PM   #21
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Fabman I would of lost it if shop did that to my car lol. I take it they made it right and car was ok and back on the road.
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Old 10-10-2016, 10:02 PM   #22
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Fabman I would of lost it if shop did that to my car lol. I take it they made it right and car was ok and back on the road.
Yes, but I don't shop there anymore.....I was absolutely livid.
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Old 10-10-2016, 10:13 PM   #23
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I wonder if that tech still has a job there? And where does he work now, don't go there. This will probably follow him a while.
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Old 10-10-2016, 10:17 PM   #24
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I wonder if that tech still has a job there? And where does he work now, don't go there. This will probably follow him a while.
That place was bought out by another place....
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Old 10-11-2016, 12:41 AM   #25
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Everytime I think of that reminds me of that Shelby on youtube that smashes into a parked truck!


So I definitely should go with those longer ARP studs? Only problem if I go with those I will have to use open end lugs :/ But I guess if I ever plan on running slicks that would make them NHRA legal. I will go with the hub-centric Billet 25mm spacer from AM and the ARP Rear wheel studs. Thank you everyone for the input!
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Old 10-11-2016, 12:48 AM   #26
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Quote:
Originally Posted by noldevin View Post
I would only ever use a small hub centric spacer and no more than 5mm on stock studs. If you did ARP studs you could use a little more
I know my ride is a decade old but, when I went with hub centric 1/2" hub centric spacers it threw my rear traction heavily to negative camber, making me look all that better but slowing my times.
I agree with noldevin, 5mm hub centric spacers are as far as you want to go unless looks are your only goal.
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Old 10-11-2016, 01:02 AM   #27
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I know my ride is a decade old but, when I went with hub centric 1/2" hub centric spacers it threw my rear traction heavily to negative camber, making me look all that better but slowing my times.
I agree with noldevin, 5mm hub centric spacers are as far as you want to go unless looks are your only goal.
Spacers have no affect on camber.
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Old 10-11-2016, 01:17 AM   #28
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Quote:
Originally Posted by 5.0Coyote View Post
Lots good info thank you. Fabman those billet ones are the ones I was considering. So I do plan on getting wheel and tire package but that want be for a year or so. Meanwhile I think I give it a try, I don't road race or anything like that but do plan on hitting the drag strip but again that won't be till next year. I figure $70 for spacers and if need be I can purchase arp extended studs for 139.
35mm is 1 3/8" so I would use the kind like The black ones pictured above.
Hub centric would be ideal. Don't worry about getting longer studs, you won't need them with that setup, they are stronger than the wheel and the axel both as demonstrated in the crash picture above.
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Old 10-11-2016, 06:05 AM   #29
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Spacers have no affect on camber.
Technically in front they can increase camber slightly due to leverage. In the rear nothing will gain you camber because lolsolidrearaxle
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Old 10-11-2016, 08:08 AM   #30
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Quote:
Originally Posted by noldevin View Post
Technically in front they can increase camber slightly due to leverage. In the rear nothing will gain you camber because lolsolidrearaxle
There is not enough leverage in a one inch spacer to make one iota of a difference in camber.
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Old 10-11-2016, 01:07 PM   #31
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There is not enough leverage in a one inch spacer to make one iota of a difference in camber.
Then maybe you can explain why the inside of my tires were wearing much more then the outsides.
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Old 10-11-2016, 01:14 PM   #32
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Then maybe you can explain why the inside of my tires were wearing much more then the outsides.
I can not examine your car from here but I can tell you with 100% accuracy that a one inch spacer will not affect camber. Think about it.
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Old 10-11-2016, 01:27 PM   #33
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A one inch spacer is actually quite large, you are increasing the camber for sure. By how much? Couldn't tell you, but an inch spacer is definitely enough to affect your alignment. With a wider wheel that has correct offset, the bigger tire counteracts this effect
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Old 10-11-2016, 01:29 PM   #34
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Quote:
Originally Posted by noldevin View Post
A one inch spacer is actually quite large, you are increasing the camber for sure. By how much? Couldn't tell you, but an inch spacer is definitely enough to affect your alignment. With a wider wheel that has correct offset, the bigger tire counteracts this effect
By zero...you are not thinking this through.
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Old 10-11-2016, 01:35 PM   #35
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By zero...you are not thinking this through.
Do you not know how a lever works? Because your front suspension is basically a lever. You are increasing the length of the lever without increasing the force resisting the lever (your spring rate)
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