Jump to content

The RennTech.org community is Member supported!  Please consider an ANNUAL donation to help keep this site operating.
Click here to Donate

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

how long with new plastic rear window top last?

Recommended Posts

I'm going to replace my to this month. Not sold on a glass window but wouldn't mind one either. Since I bought a hard top for the fall/winter in Ohio and my car is a 3rd vehicle for my wife and I and resides in garage most days and nights.

With that said what kind of life expectancy are most getting out of their plastic rear windows?

I wouldn't mind saving a few bucks on a plastic, like the extra engine access room they provide plus the better rear visibility and cockpit light...but glass will live longer!

So I guess the life expectancy may be the true test for me!

Link to comment
Share on other sites

I think if you keep it really clean, don't wipe it until all surfce dirt it off, keep it garaged (like you do), and use a great plastic cleaner on it you should get many years from it. I'd say 5-8 years at least. Whatever you do, don't use Windex or any other typical glass cleaner. The ammonia will make it brittle and cause the yellowing corroded spots you see on a lot of them.

You probably know how to clean already but here's my 2 cents on how I plan to keep mine that long.

Here's how I clean the outside: When washing the car I generously spray the window with water (never any soap). Then I coat the window with Plexus or the Porsche plastic window cleaner so it looks like it was snowed on. Then I take a baby's cloth diaper and gently make one pass over it. If there is any cleaner left I make another pass over that part only with a different part of the diaper. This gets up almost all of the surface dirt that can cause scratches. ( I learned to never short-cut this step the hard way once. ggrrr) Then I recoat with cleaner and use a different cloth diaper this time using a circular motion like I would on a normal window.

I do the inside the same way except for the initial spray of water.

If I was replacing my window, I may go with glass just to save the time and effort involved but like you wouldn't want to lose any space when working on the engine. Tough call, good luck!

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.