10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHDoes 3.4 have a limited slip diff?
Reported or suspected cause
geo issue
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Leading evidence: 'geo issue' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'geo issue' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check option sticker' (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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Suggestion
Check your option sticker under the bonnet to see if it's listed on your car.
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Suggestion · Original poster
2 new Pilot Sports on order as a quick tread depth test showed the nearside tyre to be only just legal - it's gotta go.
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10 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 1 discussions
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My 2000 registered 3.4 C2 is showing some unexpect rear tyre wear, nearside is down to 2mm but offside still has almost 5mm left on it.
As both tyres are the same age I can only assume either my alignment is way out or it's my driving.
I'd assumed that all 911's had an LSD when I bought it but a lack of grip (cough) coming out of the hairpins on my commute has made me wonder. It might explain the odd wear too as all the really fun turns are left handers.
Anyone know if slip diffs were standard fit?
Thanks
Hi Stuart, great name you've got there
LSD was an optional extra an actually very rare. I've only seen 2 examples of a standard Carrera with optional LSD. Check your option sticker under the bonnet to see if it's listed on your car.
This is what you're looking for:
M224 = AUTOMATIC LIMITED SLIP DIFFERENTIAL
You may want to get a Geometry alignment done which might highlight why you're getting this wear.
:thumb:
Diff related option codes:
219 Differential
220 Locking differential (40%)
221 Porsche-locking differential
224 ABD (Active Brake Differential)
I understand that ABD(224) is integrated into the Porsche Stability Mgmt System
yes agreed but I do believe that old opt code 224 in the 996 is still integrated/deployed within the 997's PASM system and forms the main aspect of it!
......just off to Blacks to buy a new anorak :lol:
Thanks for all the replies, my car doesn't have any of those codes.
2 new Pilot Sports on order as a quick tread depth test showed the nearside tyre to be only just legal - it's gotta go.
Now I just need to get to the bottom of how I've ended up with an evenly worn tyre so much more heavly worn than the other side of the axle :dont know:
probably a geo issue. If it's really bad you should be able to notice any difference in the cambers by standing approx 20 feet back and looking at how each rear wheel is sitting. Negative camber wears tyres in the inside so look to see if your camber on the effected wheel is "tucked in" more inwards at the top of the tyre as you look from behind.
It's a rough check and if you see an abnormality between both wheels get it checked-out before fitting your new tyre. I kerbed a wheel at 10mph once and it knocked the geo out quite a bit.
Probably is geo and it is the wheel my wife kerbed, albeit at 1 - 2mph. What are the odds of my local tyre place being able to do a good job on the weird setup on these things?
Wear is also unusual as both tyres are worn perfectly evenly across the tread but one wheel has worn down much more than the other - 1.6mm plays 4mm remaining.
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