LexVan

Why? What's the concern?? Flat spotting tires???

Flat spots are:

So over blown
Easily reversible
Easy to reduce/eliminate with 55-58 PSI during hibernation

No need to lift the car in any way.

Porsche 25th

This addresses a question I have. In my 997, I would plug into the cigarette lighter in the console. The manual for my C4S shows plugging into the emergency starting terminals. Is it OK to use one of the 12V power outlets for charging/tender?

The CTEK looks a lot like the Porsche branded tender/charger. Is this where Porsches sources theirs?

BradB

I had the joy of replacing 2 front struts one year when I raised my 1973 BMW 2002tii to help the tires over a long term storage. (4 months) Raising the car exposed the strut rods to the air and moisture in my enclosed, but not heated, garage. The exposure caused almost imperceptible pitting but it was enough to cause the seals to leak. Never again! Just don't do it.

Over inflate the tires and/or roll the car every so often.

VIC_50th

Not at all - I agree with other posters' comments including yours that flat-spotting modern tires is a non-issue that disappears after a few minutes of driving.
I am thinking more of the suspension components sitting in one position under static load for long periods of time - does this have any detrimental effect on bushings, shock seals, etc?
Is there benefit to reducing that load by raising the car a small amount? Does a 1/2 inch raise expose strut rod bare metal to the elements? On the other hand, would a 1/2 inch raise be sufficient to reduce static loading by any appreciable amount? (I don't know the answers - these are just questions).
BradB, there is a significant difference between a '73 tii's long-travel suspension and a modern 911 (my brother had a '73 tii many years ago - lovely car!). Did you raise the car enough to get the tires right off the ground?

Just asking, that's all.

BradB

No, I only raised the car enough to take the bulge out of the tires.

VIC_50th

Good to know; thanks.

spar10

how does the porsche tender differ from the two mentioned in this thread?

robsc2s

Ctek differs from porsche charger in 2 aspects:
It doesn't have porsche crest/ logo and it costs less- hey it's 4:30am and I'm on-call.
Seriously, the ctek 3300 IS the porsche model repackaged. I bought the 7002 ctek ( don't know why as it's more expensive and does the same job- just me I guess). My SA told me buy the cheaper ctek instead of the porsche batt tender.

jlanka

also the Porsche tender comes with the cig lighter attachment, the ctek model doesn't You have to purchase it extra for $10

spar10

figured it was a case of porsche re-branding and then knocking the price up 40% for the name. i've had mine for years and it's worked great. too bad i didn't know about the ctek though. oh well.

StudGarden

Just got the Porsche tequippment one. Is the charge indicator for charging supposed to come on? Mine doens't. Which port is the best to use for a 991, glove box, center console, etc? Does not have the smoking package FWIW. And stupid question but what is the red plug attatchment on the tip for? Combed throught the anemic "instruction" manual and couldn't find anything.

Team Plutonium

Plug it into the outlet in the passenger footwell. Close the door, rubber seal is thick enough to deal with the cord), and lock the car. Done.

chuckbdc

Also good idea to plug the charger into a wall outlet and set it for the charge the car setting (push bottom button until the car icon light is on). The charge setting will be yellow until a full charge is achieved, and then cycle to keep it charged.

Team Plutonium

Yes, I was assuming he understands the basic idea of a trickle charger.

Hammer911

Doesn't the Porsche version just capture free electrons from the atmosphere and transfer them to the car battery, hence the price difference?