Ride Height
Thread Starter
Drifting
Joined: Jul 2005
Posts: 3,363
Likes: 25
From: NY, USA
Ride Height
Recent threads got me thinking about ride height so I referenced this thread and measured my car.
I used the Cast Boss Rear Axle Trailing Arm for the rears and came up with:
I also measured the fender heights at the top of the wheel well openings and found (to the nearest 1/8"):
I believe that my car is low, but thought it was on the order of RS height; not below!
The fender heights seem reasonable, but the mm measurements from the referenced thread seem too low.
Could it be this low? Or am I measuring at the wrong location?
For refernece I have saved the following values in my notes; I think they are accurate:
Oh, and I have the M030 suspension installed.
I used the Cast Boss Rear Axle Trailing Arm for the rears and came up with:
- Fr Lft: 109 mm
- Fr Rgt: 110 mm
- Rr Lft: 179 mm
- Rr Rgt: 180 mm
I also measured the fender heights at the top of the wheel well openings and found (to the nearest 1/8"):
- Fr Lft: 24.625"
- Fr Rgt: 24.750"
- Rr Lft: 24.875"
- Rr Rgt: 24.625"
I believe that my car is low, but thought it was on the order of RS height; not below!
The fender heights seem reasonable, but the mm measurements from the referenced thread seem too low.
Could it be this low? Or am I measuring at the wrong location?
For refernece I have saved the following values in my notes; I think they are accurate:
Code:
Front Ride Height Specification (mm)
Model ROW USA/CAN My Car
-----------------------------------------------------
C2/C4 165 175
RS 125 110
Turbo 3.3 165 175
Turbo S2 175
Turbo S 125
Turbo 3.6 155 175
Rear Ride Height Specification (mm)
Model ROW USA/CAN My Car
------------------------------------------------------
C2/C4 258 268
RS 218 180
Turbo 3.3 270 280
Turbo S2 280
Turbo S 218
Turbo 3.6 260 280
Thread Starter
Drifting
Joined: Jul 2005
Posts: 3,363
Likes: 25
From: NY, USA
How accurate is the comparison between the fender and the official measuring points?
It seems like the fender measurements are rather similar to others that have been posted, but the official measuring points came in low. Seems to suggest error on my part, but I feel like I measured the correct points with accuracy.
It seems like the fender measurements are rather similar to others that have been posted, but the official measuring points came in low. Seems to suggest error on my part, but I feel like I measured the correct points with accuracy.
Burning Brakes
Joined: Oct 2006
Posts: 754
Likes: 1
From: So. Cal (USA)
Recent threads got me thinking about ride height so I referenced this thread and measured my car.
I used the Cast Boss Rear Axle Trailing Arm for the rears and came up with:
I also measured the fender heights at the top of the wheel well openings and found (to the nearest 1/8"):
I believe that my car is low, but thought it was on the order of RS height; not below!
The fender heights seem reasonable, but the mm measurements from the referenced thread seem too low.
Could it be this low? Or am I measuring at the wrong location?
For refernece I have saved the following values in my notes; I think they are accurate:
Oh, and I have the M030 suspension installed.
I used the Cast Boss Rear Axle Trailing Arm for the rears and came up with:
- Fr Lft: 109 mm
- Fr Rgt: 110 mm
- Rr Lft: 179 mm
- Rr Rgt: 180 mm
I also measured the fender heights at the top of the wheel well openings and found (to the nearest 1/8"):
- Fr Lft: 24.625"
- Fr Rgt: 24.750"
- Rr Lft: 24.875"
- Rr Rgt: 24.625"
I believe that my car is low, but thought it was on the order of RS height; not below!
The fender heights seem reasonable, but the mm measurements from the referenced thread seem too low.
Could it be this low? Or am I measuring at the wrong location?
For refernece I have saved the following values in my notes; I think they are accurate:
Code:
Front Ride Height Specification (mm)
Model ROW USA/CAN My Car
-----------------------------------------------------
C2/C4 165 175
RS 125 110
Turbo 3.3 165 175
Turbo S2 175
Turbo S 125
Turbo 3.6 155 175
Rear Ride Height Specification (mm)
Model ROW USA/CAN My Car
------------------------------------------------------
C2/C4 258 268
RS 218 180
Turbo 3.3 270 280
Turbo S2 280
Turbo S 218
Turbo 3.6 260 280
Advanced
Joined: Feb 2003
Posts: 50
Likes: 0
From: Bethesda MD
I am at 130mm (RS+5mm) in the front with a wheel arch measurement of 25 7/8" running Bilstein HDs + H&R reds. I had the ROW 965 3.6 springs for a short period. With the HD's set at full drop I was probably only at 145-150mm.
You must be getting some serious bump steer at that height.
After having the H&R springs installed, I drove about 20 miles to have my current ride height set and the suspension corner balanced. At that point I was running the HDs at full drop (from the combo with the ROW 965 springs above) in combination with the newly installed H&Rs. It looked great but was definitely a little squirly with respect to bump steer. I'd probably go with Evo uprights if I was going any lower. Attached is my car compared to a Carrera RS/US Cup pic I found somewhere.
You must be getting some serious bump steer at that height.
After having the H&R springs installed, I drove about 20 miles to have my current ride height set and the suspension corner balanced. At that point I was running the HDs at full drop (from the combo with the ROW 965 springs above) in combination with the newly installed H&Rs. It looked great but was definitely a little squirly with respect to bump steer. I'd probably go with Evo uprights if I was going any lower. Attached is my car compared to a Carrera RS/US Cup pic I found somewhere.
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Thread Starter
Drifting
Joined: Jul 2005
Posts: 3,363
Likes: 25
From: NY, USA
Figured out that I was measuing the rears from the wrong spot!
I'm actually at 221 mm (L) and 219 mm (R) against an RS height of 223 +/- 5 mm. Seems spot on.
The fronts are still low, but I knew that.
Are they too low, at ~110mm? That is, will damage result?
I don't feel bump steer and there is a very good test turn that I drive frequently, at speed, with diagonal raised bumps across the lane.
Thanks.
I'm actually at 221 mm (L) and 219 mm (R) against an RS height of 223 +/- 5 mm. Seems spot on.
The fronts are still low, but I knew that.
Are they too low, at ~110mm? That is, will damage result?
I don't feel bump steer and there is a very good test turn that I drive frequently, at speed, with diagonal raised bumps across the lane.
Thanks.
Racer
Joined: Apr 2008
Posts: 369
Likes: 0
From: Silver Spring, MD
Is there a standard amount which should be added to a more accessible/shorter dimension? What did you figure out to change from the obviously low values to the dimensions listed above?Thanks for your help!
Thread Starter
Drifting
Joined: Jul 2005
Posts: 3,363
Likes: 25
From: NY, USA
As I recall, I was under the car one day and made a careful examination and discovered the correct location to measure from. I'd have to go back under to find it again now! Sorry, I wish I could be more helpful.
Racer
Joined: Apr 2008
Posts: 369
Likes: 0
From: Silver Spring, MD
1st Gear
Joined: May 2010
Posts: 1
Likes: 0
91 964 Ride Height Question
I am about to adjust the ride height on my 91 964. I am having difficultly with the rear measurement, do you need to remove the body panel? Could someone give me some guidance on how to make this measurement? From the picture i can't seem to identify the flat area shown by H arrow.
I am running Bilstein HDs w/H&R springs. Current ride height:
V: 127 mm
H: 236 mm (i think)
From fender arch to ground it is 25.5 all around car. I am thinking about rising about an 1" all around as New Yorks are not that flat and this is a road car, no track use.
Last question, are front and rear of car set to the same ride height?
Thanks everyone for all the excellent information in this thread.
Best Regards,
John
91 Triple Black Cab
I am running Bilstein HDs w/H&R springs. Current ride height:
V: 127 mm
H: 236 mm (i think)
From fender arch to ground it is 25.5 all around car. I am thinking about rising about an 1" all around as New Yorks are not that flat and this is a road car, no track use.
Last question, are front and rear of car set to the same ride height?
Thanks everyone for all the excellent information in this thread.
Best Regards,
John
91 Triple Black Cab
Three Wheelin'
Joined: May 2010
Posts: 1,564
Likes: 1
but take your time. study the diagram. get a torch. feel with your hands. note the comment that 'some cars do not have this measuring surface'. it took me about 30mins to find it. obviously in hindsight it is obvious.