6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH1999 c4 spring change
Leading reported evidence
Install row 030
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
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Discussions that performed work without a confirmed outcome
1
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Performed · outcome unconfirmed
I recently installed Row 030 on my '99 Cab after reading every single thread in the archives on suspension mods.
Leading evidence: 'Install row 030' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install row 030' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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1
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Use springs, shocks, sway bars, and struts would need
Suggestion or failed attempt
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Suggestion · Original poster
Also, to really get the suspension in line with track car use the springs, shocks, sway bars, and struts would need to be stiffened up to a point that the streetabiliy of the car would be compromised.
Use springs, shocks, sway bars, and struts would need
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
Also, to really get the suspension in line with track car use the springs, shocks, sway bars, and struts would need to be stiffened up to a point that the streetabiliy of the car would be compromised.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
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Generation: 20261027T201111Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Just finished a spring change on a 99 C4. Used the H&R's. It's easier than it looks. The fronts are a little tougher (axles) but not difficult. The rears are a breeze. It's a good time to install SS brake lines. You're already in there.
Congrats - that doesn't sound easy for everyone to do - why did you change? Do you track the car or were you just looking for a tighter ride on the road. My 2000 C2 has 40,000 miles, and if I start doing mods, I would likely start with the suspension, but I haven't learned enough yet about the best way to go. I only plan on driving on the road.
You've come to the right place for info on suspension mods. I recently installed Row 030 on my '99 Cab after reading every single thread in the archives on suspension mods. Lot's of great info here, lot's of helpful people. The improvement in the car's handling, even just on the street, is absolutely astounding.
Oh, and after you upgrade your suspension, PSE should be next!
BlackCb996
The car had the US spec M030 and aero kit on it as a factory option but it needed to lowered. They are designed to be run at a lower ride height than US specs. The springs rates were just a little soft for my taste. The higher ride height also allows more air under the front of the car which contributes to drag and an "areo" push at high speeds. Lowering the car places the suspension at the "proper" angles, improves the aero, lowers the center of gravity, etc., which brings the car more in line with the design. I haven't tracked the car yet. I'm building a dedicated car for that (1977 911S). I may track the car at some POC events up at Willow Springs but just to play. At 3100 lbs the car weighs approximately what a NASCAR Cup car weighs. So a 996 is really a Grand Touring car and requires a lot of weight reduction ( 500-700 lbs) to get down to "nimble" status. Also, to really get the suspension in line with track car use the springs, shocks, sway bars, and struts would need to be stiffened up to a point that the streetabiliy of the car would be compromised. Minor improvements, to bring the car in line with the orginal design, will yeild enough improved driveablilty for most owners.
This is a source reference. Confirm exact model applicability in the original material.
