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Old 12-05-2019, 11:36 AM   #1
OhThatHurt
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Default Stock Ride Height Measurement - 2015+ STI

I searched and can't find this info anywhere. Anyone have the front and rear fender to ground measurements a stock 2015+ STI?
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Old 12-05-2019, 04:35 PM   #2
mcursch88
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if i am not mistaken, it will say in the car's manual. not sure which section though
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Old 12-05-2019, 04:35 PM   #3
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what are you trying to figure out?
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Old 12-05-2019, 04:54 PM   #4
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I don't find it in the manual. They can be downloaded from Subaru's site easily and searched. Closest thing is overall height and ground clearance. I suppose the overall height could be used, then measure your own car and compare.
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Old 12-05-2019, 05:13 PM   #5
OhThatHurt
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Originally Posted by mcursch88 View Post
what are you trying to figure out?
Trying to find stock height for original reference starting point. I have had a few different sets of aftermarket springs (RCS yellow and black) on the car and lost track of stock height. I just installed coilovers and want to verify what a 1" drop from stock would be.
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Old 12-05-2019, 05:23 PM   #6
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damn, i would take measurements from my car but i put 19s on it.

but i suppose some maths could be done to figure out what it would be with 18s

if i can remember, ill check it out tonight or tomorrow
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Old 12-05-2019, 05:28 PM   #7
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ahem...ground clearance (ride height) for stock 2015 STi is 4.9inches (road to bottom of rocker panels)
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Old 12-05-2019, 05:38 PM   #8
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Originally Posted by mcursch88 View Post
ahem...ground clearance (ride height) for stock 2015 STi is 4.9inches (road to bottom of rocker panels)
I did not know where the 4.9" reference point was. Is road to bottom of rocker panels a confirmed measurement?
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Old 12-06-2019, 09:02 AM   #9
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Originally Posted by OhThatHurt View Post
I did not know where the 4.9" reference point was. Is road to bottom of rocker panels a confirmed measurement?
"Ground clearance is measured as the minimum distance between the lowest part of the vehicle and the road surface. Ride height is measured from the lowest hanging component of the vehicle i.e the subassembly or differential or chassis and the ground."

this is according to Gogle, and the 4.9" came from the manual. therefore, i am assuming it is the stock measurement
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Old 12-06-2019, 11:19 AM   #10
OhThatHurt
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Quote:
Originally Posted by mcursch88 View Post
"Ground clearance is measured as the minimum distance between the lowest part of the vehicle and the road surface. Ride height is measured from the lowest hanging component of the vehicle i.e the subassembly or differential or chassis and the ground."

this is according to Gogle, and the 4.9" came from the manual. therefore, i am assuming it is the stock measurement
Ya, I get all that. And agree 4.9" is the stock clearance height. However I have never found any documentation that states the exact measuring point for the 4.9" stated height.

Anyway, reason I am asking for stock fender to ground height is because it is a easy measurement and accounts for front and rear difference.
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Old 12-06-2019, 11:58 AM   #11
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i agree. there is no definitive point of reference. it just says 4.9".
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Old 12-07-2019, 06:16 PM   #12
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I received measurement form a 2020 STI. Ground to edge of fender, centered.

26.75" RF
26.75" RR
26.5” LF
26.5" LR

Anyone else have stock suspension measurements to compare?
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Old 12-08-2019, 09:48 AM   #13
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What you're looking for will be in the factory shop manual. And it will probably be defined from the axle center rather than the ground. That takes differences in tire diameter out of the equation.

Looking at the 2018 FSM for the STi, the front wheel arch height measured that way is 370 mm, and the rear wheel arch height is 362 mm. Both of those numbers have rather generous tolerances listed (+12mm / -24mm). It's on the alignment specifications page. I don't expect the 2016 to be different, but you should probably check to be sure.


Norm

Last edited by Norm Peterson; 12-08-2019 at 09:54 AM.
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Old 12-08-2019, 12:21 PM   #14
OhThatHurt
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Quote:
Originally Posted by Norm Peterson View Post
What you're looking for will be in the factory shop manual. And it will probably be defined from the axle center rather than the ground. That takes differences in tire diameter out of the equation.

Looking at the 2018 FSM for the STi, the front wheel arch height measured that way is 370 mm, and the rear wheel arch height is 362 mm. Both of those numbers have rather generous tolerances listed (+12mm / -24mm). It's on the alignment specifications page. I don't expect the 2016 to be different, but you should probably check to be sure.


Norm
Thanks for sharing your knowledge, Norm. This is incredibly useful information. It also addresses my suspicion that fender heights may very form car to car and/or side to side. I thought Subaru would have this info listed somewhere, but did not know where.
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