15 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH2005 C4S rough ride
Leading reported evidence
Check before digging deeper
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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
I would try for a full alignment/geometry, wheel balance, and tyre pressure check before digging deeper.
Leading evidence: 'Check before digging deeper' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check before digging deeper' (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.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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
Check your shocks/struts....if they are shot, it could lead to your symptoms...worn engine mounts can give the same symptoms...that is a lot of weight bouncing around when the mounts or suspension goes....how many miles on it?
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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
b3: I will check SunCoast parts for the optional Porsche OEM mouth piece.
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
Check your shocks/struts....if they are shot, it could lead to your symptoms...worn engine mounts can give the same symptoms...that is a lot of weight bouncing around when the mounts or suspension goes....how many miles on it?
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.
15 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.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T005001Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Look, I know I'm getting old but should my 53k mile 4S being rattling my teeth(my original teeth)? I realize the streets in the midwest are not the best for sporty cars, but I'm just trying to figure out how taunt the ride should be. I have owned sports cars most of my life and know they don't ride like "My Father's Oldsmobile". Winter is coming when I park it and wondering if there suggestions for projects to make it a better ride. I do not track nor play pylon tag. It's just my "Happy" car. I believe the suspension to be stock and maybe original so perhaps some parts are tired.
Thoughts...beside buying a Camry!
if you haven't changed any suspension bits lately....how old are your tires....how many miles on them? are tire's pressure correct? Old tires tend to get harsh/noisy....
agree with the tyre pressures. Dont know how long you have owned the car for, but check to see if the engine mounts have been upgraded to solid state ones. quite a common mod here in the uk. and it makes the ride very sporty. normally the car interior shakes a little on idle if they have been upgraded.
I would try for a full alignment/geometry, wheel balance, and tyre pressure check before digging deeper.
I own a 03 c4s with 11k miles. Had original tires until I changed to Michelin pilot sports
Made huge diff in ride but the 4s does ride tight. It's a track ride for sure. Little harsh at times but that's the nature of it. For the most part harsh in road bumps etc but other wise not bad. It also have a 15 corvette and that ride is phenomenal compared to the Porsche
Wild Bill, you mean you didn't get the Porsche mouth piece option? And I echo most of these comments here on this thread... that is, if you don't have tires on your car, the ride will definitely be rough; plus, it can destroy a good set of rotors (metal on road = teeth rattle). So please go back into the garage and put the tire back on the car and then report back to us, ok?
Ok I knew I should have added more details: Stock 18 Turbo twists with Bridgestone Potenza SO-2As less than 2 years old and under 2000 miles. Air pressure reduced 2#'s in front and 4#'s in rear. Engine mounts appear to be of stock type. I do have new OEMs to install this winter even though tail pipes are even and with very little sag. When I bought the car in 2014 first thing I did was new tires-balanced and four wheel alignment. On really harsh bumps there is a clunk from the right rear, might look harder in that area.
b3: I will check SunCoast parts for the optional Porsche OEM mouth piece. I knew the previous owner was holding out on something! Do I have to buy the gold plated version? Tires? We don't got no tires! We don't need no stinkin tires!
Appreciate the suggestions!
Stock suspension? It might be worth a look under the car to verify - the coilover setup my car came with was fully adjustable, and it was set to be VERY tightly sprung. After I relaxed the coilovers a little, the ride quality improved drastically.
Oddly, my 02 C4S has a clunk from there as well...muffler? Heat shield? Suspension component? Dead raccoon? Without ripping the car apart, I have no way to tell.
AND I have been looking at this same issue of ride comfort. I went with bigger Pilot Supper Sports, and while they have taken the edge off somewhat, the ride is still "tight". I was told to not fix my suspension, as my old springs/shocks might be a better ride than stock.
I have been investigating new shocks (Bilstien B4) or PSS10. I am inclined to go PSS10 because coil-over, but it is a lot of money to shell out without KNOWING that the comfort settings will be actually comfortable.
Clunks from the suspension are commonly the drop links. They are cheap parts and easy to install. Next up are the rubber isolators that clamp the sway bars.
Noises are sending you a message, usually fix me.
Check your shocks/struts....if they are shot, it could lead to your symptoms...worn engine mounts can give the same symptoms...that is a lot of weight bouncing around when the mounts or suspension goes....how many miles on it?
