Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions

Reply
 
LinkBack Thread Tools Display Modes
Old 10-20-2005, 07:51 PM   #1
bmussatti
Guest
 
Posts: n/a
Preventing Flat Spotting

Has anyone used a product called "Tire Cradle"? These are apparently very high density polyurethane polymer pads to park your car on to prevent flat spotting, especially for long storage periods (winter storage). They are quite expensive too, about $350 for a set of 4.

  Reply With Quote
Old 10-20-2005, 10:52 PM   #2
Registered User
 
Join Date: Sep 2005
Location: Minneapolis/St. Paul, Minnesota, USA
Posts: 3,308
Quote:
Originally Posted by bmussatti
Has anyone used a product called "Tire Cradle"? These are apparently very high density polyurethane polymer pads to park your car on to prevent flat spotting, especially for long storage periods (winter storage). They are quite expensive too, about $350 for a set of 4.
Hi,

Flatspotting isn't as much of a problem as it was in the past. This is because Kevlar has replaced Steel as the preferred Belting for a Tire. It has much less memory than Steel. The Tire cradles are OK and probably do the job, but they are half the price of a set of tires! If you inflate your tires to 58PSI when stored (as Porsche recommends), you'll pretty much avoid the issue altogether. Hope this helps...

Happy Motoring!...Jim'99
MNBoxster is offline   Reply With Quote
Old 10-21-2005, 03:15 PM   #3
Registered User
 
Join Date: Sep 2005
Location: MARLTON, NJ
Posts: 539
This is going to sound crazy...

If you truely are going to "store" the car for the winter, why not buy a set of 4 jack stands and take the wheels off the car. You could also store the car with 4 jack stands under it and the wheels on. It would certainly be less than $350.00. You would just need a floor jack and a stable surface to keep the car on. This would definately prevent Flat Spotting the tires.

Just a thought.

joe
01S
Triple Black
AUDIOGUY is offline   Reply With Quote
Old 10-21-2005, 03:21 PM   #4
bmussatti
Guest
 
Posts: n/a
It is not recommended to store the car with the suspension "unloaded/unsprung" as you suggest using jack stands.
  Reply With Quote
Old 10-21-2005, 05:13 PM   #5
Registered User
 
donv's Avatar
 
Join Date: May 2002
Location: NW of Boston, MA
Posts: 697
The reason I've heard for not using the stands is that you end up inviting rust in areas that normally aren't exposed to air/corrosion when the suspension is loaded.
__________________
2001 Lapis/Black/Black, PSM, Rear Speaker Kit, Optima...
donv is offline   Reply With Quote
Old 10-22-2005, 04:28 PM   #6
Registered User
 
Join Date: Sep 2005
Location: Minneapolis/St. Paul, Minnesota, USA
Posts: 3,308
Quote:
Originally Posted by donv
The reason I've heard for not using the stands is that you end up inviting rust in areas that normally aren't exposed to air/corrosion when the suspension is loaded.
Hi,

You're quite right so far as you go. When the suspension is left hanging, the struts expose a greater portion of the piston shaft than usual. This steel will corrode and then tear the seals on the shock body once they're pushed back into it.

But, the other reason is that the suspension bushings will be stretched and contorted in a manner contrary to their normal use. The Bushing material, Rubber or Poly has a memory and will tend to take on this new shape giving the suspension much more play, the same is true, albeit less so, for the torsion bars (anti-roll bars). So, it's not a good idea to unspring the car for long periods, especially in colder temperatures. Hope this helps...

Happy Motoring!...Jim'99
MNBoxster is offline   Reply With Quote
Old 10-23-2005, 09:44 AM   #7
Registered User
 
Join Date: Oct 2005
Location: Sacramento
Posts: 26
A little off the jack stand issue, But do not recomend storing car for the winter without doing a whole bunch of things. Personally the Porsche or for that matter any car, needs to be driven at least monthly, this will keep the oil cirulating, keep all the seals from drying out.

You must have some sunny days where you can go for a drive long enough to full warm up the engine, oil etc.

mike
__________________
2002 S. Black on Grey. Fun Fun Fun
chily3 is offline   Reply With Quote
Old 10-23-2005, 10:32 AM   #8
Registered User
 
Join Date: Sep 2005
Location: Minneapolis/St. Paul, Minnesota, USA
Posts: 3,308
Quote:
Originally Posted by chily3
A little off the jack stand issue, But do not recomend storing car for the winter without doing a whole bunch of things. Personally the Porsche or for that matter any car, needs to be driven at least monthly, this will keep the oil cirulating, keep all the seals from drying out.

You must have some sunny days where you can go for a drive long enough to full warm up the engine, oil etc.

mike
Hi,

Sorry, but for the Midwestern and other colder regions (where the temp stays consistently below 40 or lower), I have to disagree with you. In these climes, it's best to simply Hibernate the car, after prepping it as you mention.

This is because you'll induce all sorts of condensation internally as well as potentially having problems expanding and then suddenly contracting the seals. Not to mention that parts get brittle at very low temps and suddenly placing stress on them after a week or better at sub 40 temps can have some negative effects.

I have been storing Cars in this region for more than 30 years and still have one car (my '71 240Z) which I've owned since new. I have never suffered any ill effects of simply prepping the Car(s) and leaving it.

Research this forum for a post I did on how to properly store a Car for the Winter. I am actually spending the day today putting all my cars to sleep - a fair amount of work when storing 4 cars, but well worth it in the Spring!

Happy Motoring!...Jim'99

MNBoxster is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 02:15 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page