Same size spacers, different poke?

[Adotcaruso86]

So I just got my car lowered on steeda progressives and put the 20mm spacers on the rear, 1” up front. I didn’t notice it til I got home that the rears are pretty different from the level of poke. I double checked to make sure that the rears were both 20mm. The car was also aligned. Any ideas on what is causing this drastic of a difference ? It’s not bc the car is sitting on a slide curb. It looks the same way when it’s sitting in my garage on flat surface

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[NightmareMoon]

Check if the camber is actually even, left to right.

Anything that isn't camber or offset is coming from the frame/subframe. There are subframe alignment kits that help with this sort of thing.

 

[Adotcaruso86]

Here’s a copy of the alignment

 

[313_S550]

The Steeda subframe alignment kit should take care of that, If youre willing to spend a little extra get the BMR Cradle Bushing Lockout Level 2 which should also align the subframe and help you put power down.

 

[22MAVXLT]

You need these...https://www.steeda.com/steeda-s550-mustang-irs-subframe-alignment-kit-2015-all-555-4438.html

 

[Adotcaruso86]

thanks everyone- I was reading the directions and it says it needs an alignment after they’re installed so is it safe to say this alignment I just paid for was a waste? Lol

 

[22MAVXLT]

Probably so. It is always best to get an alignment after tearing any suspension components apart.

 

[Adotcaruso86]

The Steeda subframe alignment kit should take care of that, If youre willing to spend a little extra get the BMR Cradle Bushing Lockout Level 2 which should also align the subframe and help you put power down.

so is it the steeda kit or BMR? Or is the combo together is best?

 

[K4fxd]

You have .5 degree more camber on the left than the right. I'd take it back and have them even it out. That is the reason for the poke difference.

 

[Nightmonkey]

It is best to first place it on truly level ground.
Then check whether it is the upper edge of the wheel or also the center of the wheel that is off.
To do that, place a spirit level over the center of the wheel and aim a plumb line upward to the edge of the wheel housing.
Measure the distance of the string to the wheel housing on both sides.
Eye measurement is basically enough, you are only concerned if both distances are nearly the same.

If it is in the center, the problem you have is quite normal axle offset (as we call it over here...).
Actually you can find it on almost every car

Do you really need the bushings from Steeda?
They only ensure that inaccuracies of the unibody from production cannot be compensated.
The subframe simply has to be loosened, pushed over a bit and then tightened again.

An aditional alignment is of course part of the process, no matter what you do.

 

[Adotcaruso86]

You have .5 degree more camber on the left than the right. I'd take it back and have them even it out. That is the reason for the poke difference.

is this something the alignment shop should take care of? Or the shop that did the lowering?
My guess is they may have lowered the subframe to install the springs and it moved but I don’t know who fixes that

 

[Nightmonkey]

There is no reason to loosen the subframe when installing the spring.
This will be the way it is from the factory, and is only noticeable now because the tires are closer to the wheel housing.

 

[Exploded_Muffin]

Before you spend any money on parts and install take your car back to your alignment shop (not the spring installers) and have them even out your rear camber as @K4fxd mentioned.

It's easy trigonometry but you can use this site to calculate the fender clearance (or difference) for both camber setups:
https://www.gtsparkplugs.com/Camber-Offset-Calculator.html

As an example a stock PP tire of height 27.7 inches (703mm) will have a fender clearance/poke difference of about 6mm for a 0.5 degree camber difference which is likely about what you're seeing on your car.

If you're gonna be working on your rear end a lot then it's a good investment to install the Steeda subframe alignment kit before going for a realignment (you'll likely be charged for a new alignment).
If not take your car as is and have them correct their rear alignment.

 

[WItoTX]

There is no reason to loosen the subframe when installing the spring.
This will be the way it is from the factory, and is only noticeable now because the tires are closer to the wheel housing.

Im pretty certain Steeda's spring swap video states to loosen the subframe. I had to do it with mine and a friends car. It made the swap really easy.

But I am betting it's because the camber is .5 different. I would just have it aligned and get the camber to match. My guess is, the tech (if he even know the camber could be adjusted) probably didn't want to mess with the camber on the driver side because it's a giant pain with the fuel filler line right there.

 

[Adotcaruso86]

I don’t even understand what is going on anymore. I got the Chance to wash and really get a good look at the car today and the passenger side front is about a half inch higher than the driver side front. Had the same shop do the work as my last mustang and never had problems. Complete flat driveway

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