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18" wheels on '00 Cab 4

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YOUR RESEARCH18" wheels on '00 Cab 4

Leading reported evidence

Install b&m short shifter

Performed · outcome unconfirmed

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Performed · outcome unconfirmed

I just installed the B&M Short Shifter on my car.

18" wheels on '00 Cab 4
Frequently discussed work

Check porsche tsb's

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Suggestion · Original poster

I've also tried to check the Porsche TSB's on alldata.com to see if they ever issued any such "advisories" and I found none.

18" wheels on '00 Cab 4
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Leading evidence: 'Install b&m short shifter' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check porsche tsb's' (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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Run 18" sport classic ii's

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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.

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Performed · outcome unconfirmed

I am running 18" Sport Classic II's.

18" wheels on '00 Cab 4

Run 18's

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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.

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Performed · outcome unconfirmed

Not only does that sound like a wives tale, but I can tell you from experience that I run 18's with track tires and use the 996CAB as not only a DD but a track car as well.

18" wheels on '00 Cab 4

Run oem 18" sport classics

Performed · outcome unconfirmed

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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 performed work without a confirmed outcome
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Performed · outcome unconfirmed

Like mentioned above, I run OEM 18" sport classics on a 2000 cab that came new from the factory with the car and have not had any problems.

18" wheels on '00 Cab 4

Use 996cab as not only a dd

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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 performed work without a confirmed outcome
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Performed · outcome unconfirmed

Not only does that sound like a wives tale, but I can tell you from experience that I run 18's with track tires and use the 996CAB as not only a DD but a track car as well.

18" wheels on '00 Cab 4
Frequently discussed actions (10)

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Check porsche tsb's

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Suggestion · Original poster

I've also tried to check the Porsche TSB's on alldata.com to see if they ever issued any such "advisories" and I found none.

18" wheels on '00 Cab 4

Check they ought

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Suggestion · Original poster

guess publishers can't do all the fact-checking they ought to do.

18" wheels on '00 Cab 4

Check tire air pressure

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Suggestion

I'll check my tire air pressure again.

18" wheels on '00 Cab 4

Install b&m short shifter

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Performed · outcome unconfirmed

I just installed the B&M Short Shifter on my car.

18" wheels on '00 Cab 4

Replace windshield

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Suggestion

It is just wrong to have to replace the windshield for this stupid 20cent plastic part on a car like this.

18" wheels on '00 Cab 4

Run 18" sport classic ii's

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Performed · outcome unconfirmed

I am running 18" Sport Classic II's.

18" wheels on '00 Cab 4

Run 18's

No successful repair reported for this finding.

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Reported fixes
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Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

Not only does that sound like a wives tale, but I can tell you from experience that I run 18's with track tires and use the 996CAB as not only a DD but a track car as well.

18" wheels on '00 Cab 4

Run oem 18" sport classics

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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.

Performed · outcome unconfirmed

Like mentioned above, I run OEM 18" sport classics on a 2000 cab that came new from the factory with the car and have not had any problems.

18" wheels on '00 Cab 4

Use 18 inch wheels

No successful repair reported for this finding.

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Discussions that contain suggestions
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Suggestion · Original poster

) that covers the 1966-2001 models and reports "Advisories against using 18 inch wheels on (the 1999 cabriolet); while chassis stiff enough, harmonic vibration begins cracking windshields." Again on the 2000 model: "Advisories continue against using 18-inch wheels, tires; cause chassis falures despite new ultrastiff chassis, as from 1999."

18" wheels on '00 Cab 4

Use 18" wheels

No successful repair reported for this finding.

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Suggestion · Original poster

The way he wrote it makes it sounds like Porsche issued advisories against using 18" wheels on the 1999 and 2000 model (Cab vs Coupe?) 996.

18" wheels on '00 Cab 4
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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.

21 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Rennlist: 1 discussions

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Problem solved.....

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Generation: 20261026T152433Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

2000 996 Cab 4. I've heard that upgrading the stock 17" wheels to 18" has been blamed for windshield cracking/stress fractures on the 1999 and 2000 model 996 convertibles. Could this be true?

POST 2Original post

I don't think so....there are plenty of folks with 18" wheels (some even with 19") on their cabs, even with stiffer suspensions etc.....never heard that it could do any damage to your windshield!!!! I have 18" Carrera wheels on a 01, with H&R springs and bilstien shocks with no problems...

POST 3Original post

Not only does that sound like a wives tale, but I can tell you from experience that I run 18's with track tires and use the 996CAB as not only a DD but a track car as well. Oh, I also have the RoWM030 sport suspension. Only way I can see you cracking your windshield is rolling the car in a crash.

POST 4Original post

it is not the windshield itself but the hard plastic part around the windshield which holds the rubber seal that breaks.... only fix is a windshield replacement about 1000$ ask how I know it.. 2000 c4 coupe rowm030 18" ps2.... it happened during a spririted swiss alp pass drive after many of them in the last 48000km (problem free otherwise so wtf) ymmv

POST 5Original post

I have never heard of that problem before. I have a 2000 Carrera Cabriolet that I bought new back in 2000. I am running 18" Sport Classic II's. My cab is a daily driver and is driven all year round. I have not had any problems with the windshield except for the little pits in the glass that is a result of daily driving.

POST 6Original post

Not true, why would they offer 18" weels as a factory option?

POST 7Original post

100% bone stock C2 with 17" wheels. Had that happen. Sounds like the worst dealer excuse to not replace something under warranty. Ever.

POST 8 / ORIGINAL POSTEROriginal post

Thanks for the feedback. I ask because there is a publication written by a guy named Randy Leffingwell called the Porche 911 Buyers Guide published by Classic Motorbooks ( www.motorbooks.com ) that covers the 1966-2001 models and reports "Advisories against using 18 inch wheels on (the 1999 cabriolet); while chassis stiff enough, harmonic vibration begins cracking windshields." Again on the 2000 model: "Advisories continue against using 18-inch wheels, tires; cause chassis falures despite new ultrastiff chassis, as from 1999." Sounds contradictory. I was going to scan and post these pages for you but had some technical difficulties with it last night. This guys said some other rather unusual things in his book too which makes me doubt the accuracy of his "facts." The way he wrote it makes it sounds like Porsche issued advisories against using 18" wheels on the 1999 and 2000 model (Cab vs Coupe?) 996.

POST 9Original post

Frag that. Like mentioned above, I run OEM 18" sport classics on a 2000 cab that came new from the factory with the car and have not had any problems.

POST 10 / ORIGINAL POSTEROriginal post

I'm convinced that it's a non-issue. I've also tried to check the Porsche TSB's on alldata.com to see if they ever issued any such "advisories" and I found none. It's just amazing how much wrong info is published in books... guess publishers can't do all the fact-checking they ought to do.

POST 11Original post

well two people on this thread had the plastic thingy problem.. seems not related to 18" but seems to be recurring.. also why do you think porsche reinforced the chassis from 02 on, this represented a big weight bump, and most of the additional HP's from the 3.6 engine got eated by this additional weight. I mean there must have been a real reason to stiffing up the car by 25% from 02 on. It is just wrong to have to replace the windshield for this stupid 20cent plastic part on a car like this.

POST 12Original post

Another data point here, 18"'ers on my C4 Cab since I took delivery without a problem of anything cracking.

POST 13 / ORIGINAL POSTEROriginal post

Thanks Joe, Out of curiousity, do you have the stock suspension, the sport package (US) or the RoW-030? --Jeff

POST 14Original post

Jeff, Stock suspension here! Although I do have some sympathy for the "feel like I'm floating" thread; some day I will do a stiffer suspension as well as a SSK. Cheers

POST 15 / ORIGINAL POSTEROriginal post

Mine is stock too and you read my mind! The B&M short shifter (plus new linkages if they are not included?) is next on my to-do list. Followed by some kind of suspension upgrade. I almost completely solved the "feel-like-I'm-floating" problem by upping my tire pressures to 36 (cold) all around as per owners manual specs. I want to flatten out the front-end while cornering but am not ready to pull the trigger on a full RoW-030 install. I plan to do everything myself but the spring installs scare me! Anyway, I'm considering beefing up the sway bar first to see if that satisfies. Best, Jeff

POST 16Original post

Jeff, I just installed the B&M Short Shifter on my car. I would recommend that you drive a car with the SSK first before you install it. I was surprised by how much shorter the throws are with the SSK. It took a couple of days of hard driving to get used to the increased shift effort and very short throws (reverse is REALLY short). I am used to it now and like how the shifts feel really precise -- I just wish the throws weren't that short. Anyway, try before you buy if you can. Cheers,

POST 17Original post

Hi Jeff, Thanks for the tip. I'll check my tire air pressure again. Last I checked it, it was okay but it can hurt to check again. For those in the SF Bay Area, if you want to know if your car "feels like it's floating", there is one very small stretch of road that was on my way to work (previous company...) that every time I drove over it in my 911, I thought "Sealy Serta! Gosh that's gotta be wrong!" Taking the Guadalupe Pkwy (87) exit off 101 south and immediately exit at the Skyport/Airport exit. There's a smal riser as you hit this exit. Dare I say it, I think my Lexus SC300 feels stiffer going over that riser...

POST 18Original post

Hmmm... I think there's a slogan here. "I upped my tire pressure, so up yours!"

POST 19Original post

Buy a coupe..... Problem solved..... I have 19" on mine..... Nothing cracking here ...... -Eli

POST 20 / ORIGINAL POSTEROriginal post

Good idea, Eli. If you know of an '02 C4S in cherry condition for $55K or less I'll take it! Hey, I noticed you have a Pelican address. Can you tell me if the B&M Short Shifter comes with new linkages or do I have to buy those seperately? Cheers, Jeff

POST 21Original post

Jeff, The B & M comes with brass inserts and teflon pivot bushings.... The throw is reduced by 35% and the unit itself is machined CNC 303 stainless steel. B & M Link -Eli

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