That spring in the first pic is BAD. It's either very weak or has no spring tension left in it. Were those made in China? You can't tighten the u-bolts too tight that would cause those sagging leafs. I'd get those springs off the car before they break and cause you to wreck your car. That spring has failed.

I thought I was seeing things at first with that pic of the leafs, but nope, they have a problem...

I got them from Springs n Things a little over a year a go, because I hear a lot of people have been happy with them, It rides a lot better from my old springs that was flat, gets lots more grip now, just a little tire squeal on sharp mountain curves!

Man that will be a lot of work to take them back off!.. So if you guys think their not right then maybe I should get a hold of springs n things & see if they will send me another set or something!

And you think that is a problem?

Sounds like something to be expected to me. Maybe slow down and not hit those curves at 80.

Probably a bad heat treat, send them pics and let us know what they say. Or your axle is twisted and the other side is ok, and it has tweaked the passenger side spring. Take pics of both sides and post them where we can see the springs where the Ubolts are not blacked out by the drum, wheel and tire. Tim

I am sick of people saying this, I am not pushing it, I have drove it the same speed I all ways have on them curves, It did not do it before so why now?.. & if my springs are not right then that may be it!

A recommendation for you that I have had to work on myself is to not take things too serious on the internet. Some Moparts members can be brutal and not intending to be when giving advice.

first pic is of pass. & the other is driver

I would suspect there is a serious problem with the springs. Now that am looking closer, it seems like the spring is twisted up in the front on the drivers and down on the passengers side? if so that means your tubes are twisted in the housing or the perches were welded on wrong. Its hard to tell with the light on the one pic...and I am trying to respond in this post and then go back and look at the pics again.

How is your pinion angle? have you measured it?
Maybe someone else can chime in?

You asked about pinion angle....to a guy that does not understand why his tires are squealing....

I didn't see any tire size listed, saw no pictures of tires, saw no copy of the alignment sheet or even the exact specs to which it was aligned.
You want help but are making it hard to BE helped with all these missing bits of information.
I'll state this:
IF the alignment guy set the car to stock specs for a manual steering car, that is not good. If he set it to the factory specs for a power steering car, that is not a whole lot better. Many times, these alignment guys are lazy and unmotivated to deviate from the factory settings. I have seen it many times...A guy takes his classic Mopar in and comes back with positive camber, no caster and 1/8" toe in.
No, that is not a good alignment for today's tires or today's driver.
You do not want to ever have positive camber. It will almost always result in less caster than ideal. 1/2 degree of negative camber is great and despite what the uneducated fools may say, it will not result in extreme wear of the inside edges of the tires. Excessive toe OUT will but 1/2 degree of negative camber aids in cornering and high speed stability. Get ALL the positive caster that can be achieved. Match the left and right sides. FORGET the old rule about aligning for the crown of the road where the tech sets the camber positive on the left and negative on the right. Make both sides even. Caster makes the car stable in a straight line and helps keep the outside tire more evenly squared up to the road in turns. A car with more caster will drive straight when you let go of the wheel on a straight road.

Finally.....Was it THIS guy that did the alignment ??

Is it just me or does that first picture of the left side spring look like a rusty old spring and not a new one? Look how nice the paint is on the other. Could the first picture be the old spring picture by mistake? If not it's terrible.

Your spring packs look bent. Like they were severely overloaded, jumped, or subjected to high horsepower drag launches and wrapped up beyond their strength point. But, that is an entirely separate topic from the tire squealing after alignment.

When you changed the springs, it changed the ride height, which alters the alignment angles. If your alignment was on the edge of acceptable prior to the change and your tires were worn in to these angles, the spring change put it past the point where your tires were worn and now you are wearing them in on a new angle, which makes them squeal.

As requested by several, please post a photo of the alignment spec sheet. Simply saying it is set to daily driver specs doesn't mean anything. That's like saying you have a 3/4 race cam. If they did not provide a spec sheet, then we have nothing to go on. Ask them if they have a copy. If they cannot produce this, odds are they did not do it correctly and we still have nothing to go by. So you have two choices, have them redo it to specs below and demand the spec sheet, or find another shop and have them check it to teh specs below and provide you a spec sheet.




No, I wouldn't use the factory alignment specs for a regular driver using radial tires. The original alignment specs were designed for bias ply tires. Bias ply tires have a very narrow range in which they operate efficiently. Radials have a much wider range of operation. This is why you can use more aggressive alignment specs to create better handling by using a radial. IMO, since you aren't providing alignment specs to us, I'd take a guess that the shop actually gave you positive camber (which was sometimes necessary with bias plys) and now your tires are protesting the bad angle by squealing. If you go to a new shop, heck, even if you go back to your old shop, ask them to align it to 2005 Mustang GT specs. When they say they can't meet the caster figure, tell them to do the best they can. When they are done, ask for the spec so you can see the before and after difference, enjoy your drive home with the new, improved angles, report back here.

Then we can talk about your interesting spring configuration. FWIW, bent springs do work. They aren't optimal and should be fixed, but they will perform their basic function of locating the axle and allowing suspension motion.

Those leaf springs make it look liker my ex wife and two of her fat friends are in the trunk.

If the rear springs are not functioning correctly (and by the photo of the one spring, they can't be functioning correctly), the car will not corner as well as it could. Front end alignment won't cure the rear spring issue. Gene

[quote=Frankenduster]Those leaf springs make it look liker my ex wife and two of her fat friends are in the trunk.

that sounds like a good plan/info. yes, as much positive caster as they can get

And equal on both sides, within reason.

For instance.....let’s say the max caster they can get is 1 degree positive on one side but 3.5 degrees on the other.

You don’t want that much difference. In that example I would go for 1 degree and maybe 1.5 degrees.

Also...if the techs aren’t familiar with their machines it can be very confusing if they input YOUR vehicle into the set up cause the machine will pull up factory specs and create go / no-go windows on the display screen. These windows won’t be what you are after. Hopefully they know how to input the specs into the machine.

Any real alignment guy wouldn't even have to be told what to do. He would see the radials and adjust the specs accordingly. Since there are not a lot of great alignment techs out there, that is why I suggest telling them '05 Mustang GT. Any maroon probably has these auto programmed to their late model alignment equipment. However at 7*, an old mopar will never get the same caster angle which is why you tell them to give me all you can. Telling the same maroon who can only do toe and go to give you fractional measurements is only going to lead to grief.