Lowering Springs with 20" Wheels?

[Edgemere]

Greetings,

I have a 2022 Mustang GT Premium that has 1000 miles on it. It has a manual transmission and did not come with the performance package.
It came with the OEM 20" X 9” Premium-painted Aluminum Wheels from Ford. The tires are Good Year F1 265/35R20 99W

I am considering installing new Steeda Lowering Springs, Sport Progressive Set (Steeda: 555-8210)
It will Lower the car 1.125” in the Front and lower the car 1" in the Rear

The widest Steeda would ever recommend up front would be a 20x10" wheel +40mm offset with a 275/35-20 tire.
In the rear, they have tested a 20x10.5" wheel +45mm offset with a 295/35-20 tire.

I would like to have stiffer springs for better handling, but I am afraid that with the 20" wheels, and lowing the car, I am going to have issues with the tires hitting the wheel wells while turning or going over bumps. Also, will the car have issues with the chin spoiler hitting the ground with the car being an 1.125" lower in front?

I have already installed a BMR rear 25mm sway bar, but I left the stock 32mm front sway bar in place. I also do not understand what is meant by the 40mm & 45mm offset that Steeda is referencing.

I guess the bottom line is am I going to have problems installing new lowering springs, or should I leave the stock springs in place? The 20" wheels really fill the wheel wells rather nicely and there is not a lot of space between tire and car.

Does anyone know about stiffer springs that can be installed that do not lower the car? If you install new springs, do you also need an alignment done to your Mustang?

Please advise.

Thanks, Edgemere.............

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[KingKona]

Do you want lowered car looks? Or better handling?

From where you're starting, that's two very different paths.

 

[R34P3R]

I have 20x11 +50 on my rears, lowered 1 inch. 305 tire. No problems whatsoever.

 

[Prodigal]

I have 20's and used the steeda dual rate springs for a .5" drop. I had the same concerns you have with the chin spoiler. our road here go from concrete to asphalt and have ridiculous expansion joints, not to mention the transition from the street to my driveway has a 9" change in elevation. mine are 20x10.5 and 20x11.5 with 285/30 and 315/30 rubber. I think it looks great with the wheel well nicely filled and I have no issues with rubbing. the handling is amazing. for a street car, I think you need to be a little conservative or you have no fun driving it unless you live somewhere the roads are in far batter shape than most of the US. Worrying about ripping off a spoiler or constantly bottoming out sucks no matter how good the stance is.

 

[Edgemere]

Greetings,

I want both looks and handling, but I would take handling over looks. I have lowered other Mustangs that I have had. I know it helps with handling and looks great. My concern is the 20" wheels on my current Mustang. My other cars that I had and lowered had 19" wheels. I just do not want issues with the tires hitting the wheel wells while turning or bottoming out going over bumps if I lower my Mustang.

 

[Bulutt]

As advised elsewhere on this forum, 20 x9.5 front with 20 x 11 rear and lowered 1 inch. No issues at all.

 

[Ballistica]

I went with a 20x10 squared setup (35 offset) with 285/35/20 Michelin PS4’s. I also lowered the Mustang with Eibach Pro Kit springs that dropped the front by 1” and 7/8” in the rear. Have had zero issues with rubbing and have only occasionally rubbed the front splitter (I added the PP2 splitter so it’s slightly lower) when I’ve taken some elevation changes too fast. The 20’s filled out the wheel gap nicely and I love the look.

 

[Rick#7]

It seems like you might be confusing an increased wheel diameter with meaning the overall tire diameter is also increased, it is not. Your stock 265/35-20 tire has the same overall diameter as factory 19" rims with stock tires. Also, the wheel and tire sizes you quoted from Steeda as being the largest they would recommend are larger than your wheel/tire combo anyway, so I don't understand why you're concerned about this, you pretty much answered your own question.

 

[DadzMach]

I have 20x10 and 20x11 with 285 front and 315 rear. Lowered on Steeda dual rates for Magnaride.
No issues at all.

 

[qwiknotch]

I have 20x9.5 and 20x11, 275/35 and 305/35 tires. I went with the Steeda Mustang Dual Rate Ultimate Handling Lowering Springs. Been on my car since 2018 and still handles great.

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