Spare Tire, General question about this one |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Spare Tire, General question about this one |
jim_hoyland |
Feb 19 2018, 05:08 PM
Post
#1
|
Get that VIN ? Group: Members Posts: 9,303 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California |
I bought a Vredestein Space Master 165-15 several years ago at the G&R Swapmeet. It is designated for trmperory use only.
Question is: Can this spare be stowed deflated ? Why/What is the air valve about ? Never seen one like this before Attached image(s) |
Front yard mechanic |
Feb 19 2018, 05:18 PM
Post
#2
|
Senior Member Group: Members Posts: 1,165 Joined: 23-July 15 From: New Mexico Member No.: 18,984 Region Association: None |
Is that one of those German shred masters? (IMG:style_emoticons/default/av-943.gif)
|
Morrie |
Feb 19 2018, 05:28 PM
Post
#3
|
Member Group: Members Posts: 181 Joined: 8-October 07 From: Cedar Park, Texas Member No.: 8,198 Region Association: Southwest Region |
What you have here is a collapsible spare tire from a 911. They are designed to be stowed deflated and are sort of an acordian sidewall. The 911s came with an air pump to inflate the tire. Use extreme caution if you must use this tire, it is very likely dry rotted from the inside out and these are prone to rapid failure if driven more than the bare minimum.
|
Coondog |
Feb 19 2018, 05:50 PM
Post
#4
|
Advanced Member Group: Members Posts: 2,089 Joined: 24-September 15 From: Apple Valley Calif Member No.: 19,195 Region Association: Southern California |
|
mepstein |
Feb 19 2018, 05:50 PM
Post
#5
|
914-6 GT in waiting Group: Members Posts: 19,279 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
I’ve been told by a couple knowledgeable Porsche gurus that the 914 spare was designed to assist in front crash protection and should be kept inflated. I’m not sure I will be able to accomplish this with a GT cooler but it’s something I think about.
|
jim_hoyland |
Feb 19 2018, 05:53 PM
Post
#6
|
Get that VIN ? Group: Members Posts: 9,303 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California |
What you have here is a collapsible spare tire from a 911. They are designed to be stowed deflated and are sort of an acordian sidewall. The 911s came with an air pump to inflate the tire. Use extreme caution if you must use this tire, it is very likely dry rotted from the inside out and these are prone to rapid failure if driven more than the bare minimum. Thanks for the heads up. I did have to use it today, but only the bare minimum. Do the 996 collapsable spare suffer the same ? I agree on that front crash protection; seen two people walk away from separate front end collisions |
Tom_T |
Feb 19 2018, 05:57 PM
Post
#7
|
TMI.... Group: Members Posts: 8,318 Joined: 19-March 09 From: Orange, CA Member No.: 10,181 Region Association: Southern California |
I’ve been told by a couple knowledgeable Porsche gurus that the 914 spare was designed to assist in front crash protection and should be kept inflated. You are correct Mark. IIRC Jeff Bowlsby may have a tech document on his website that covers that, along with other crash testing & design. Also on the 914/4's you carried them fully/over inflated to max allowable pressure (i.e..: the sidewall rated max. & more than on your 914's tire pressure tag on the gas tank), in order to power/pressurize the air pressure window washer bottle, & still have usable pressure later, when you need to use the spare on the 914. (IMG:style_emoticons/default/beerchug.gif) Tom /////// |
Tom_T |
Feb 19 2018, 06:02 PM
Post
#8
|
TMI.... Group: Members Posts: 8,318 Joined: 19-March 09 From: Orange, CA Member No.: 10,181 Region Association: Southern California |
I bought a Vredestein Space Master 165-15 several years ago at the G&R Swapmeet. It is designated for trmperory use only. Question is: Can this spare be stowed deflated ? Why/What is the air valve about ? Never seen one like this before Jim, I wouldn't use that on anything as a spare, but you may be able to sell it to a 911 type who wants one for display & show purposes. If you want a space saver deflatable, then what some have done is to get a later Boxster or 996/997 deflated spare wheel with a new/fresh deflatable/collapsable tire on it (AFAIK they still sell them), & still mount horizontally in the front trunk, so you'll at least get partial frontal crash protection from it - as Mark E pointed out. IMHO the space savers in fact don't save all that much space, & then you have to use some of the meger savings up to carry the air pump anyway! (IMG:style_emoticons/default/blink.gif) PS - IIRC that is a 2-way valve to work with the Porsche air pump to both inflate & deflate/collapse the tire. You can probably find the valve part in the respective 911 PET Parts Manual for the MYs which used them. (IMG:style_emoticons/default/beerchug.gif) Tom /////// |
SirAndy |
Feb 19 2018, 06:11 PM
Post
#9
|
Resident German Group: Admin Posts: 41,651 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
I bought a Vredestein Space Master 165-15 several years ago at the G&R Swapmeet. It is designated for trmperory use only. Question is: Can this spare be stowed deflated ? Why/What is the air valve about ? Never seen one like this before That doesn't look safe, and inflated this isn't any smaller than a normal spare ... (IMG:style_emoticons/default/unsure.gif) PS: I carry a full size spare in the rear trunk. |
drem914 |
Feb 19 2018, 06:32 PM
Post
#10
|
Senior Member Group: Members Posts: 1,030 Joined: 16-May 08 From: Trabuco Canyon, CA Member No.: 9,062 Region Association: Southern California |
Jim, with my 5-Lug conversion I had to jettison the original 4-lug spare and went with the Boxster spare instead. It still gives me a fully inflated spare and the crash assist. I don't use the windshield fluid tank hook up.
|
914Sixer |
Feb 19 2018, 06:41 PM
Post
#11
|
914 Guru Group: Members Posts: 8,886 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region |
I have a 996 16" spare. I keep it inflated and it is the same size as the 914 spare.
|
porschetub |
Feb 19 2018, 07:26 PM
Post
#12
|
Advanced Member Group: Members Posts: 4,701 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
What you have here is a collapsible spare tire from a 911. They are designed to be stowed deflated and are sort of an acordian sidewall. The 911s came with an air pump to inflate the tire. Use extreme caution if you must use this tire, it is very likely dry rotted from the inside out and these are prone to rapid failure if driven more than the bare minimum. Correct ,however they don't dry rot from the inside it all happens on the outside where they fold up. I have a 964 alloy one which saves weight and clears my calipers,a good pump to get is the 944 one ,plenty around and cheaper than the 911 factory supplied one to buy used,can be handy for a slow leaking tyre also. Crash protection....well I'am sure its designed to sit flat inflated however even one mounted on the bulkhead would be better than nothing,VW beetles had them mounted near vertical then the super beetle had then sitting flat,I have personally seen proof this provides protection in a front impact with that car. |
DRPHIL914 |
Feb 20 2018, 01:07 PM
Post
#13
|
Dr. Phil Group: Members Posts: 5,766 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States |
jim
I bought a Boxster spare to put in rather than the space saver, that ive had for a few years, will sit more flat, leaving plenty of space for your travel tool kits and luggage etc. |
jim_hoyland |
Feb 20 2018, 01:33 PM
Post
#14
|
Get that VIN ? Group: Members Posts: 9,303 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California |
jim I bought a Boxster spare to put in rather than the space saver, that ive had for a few years, will sit more flat, leaving plenty of space for your travel tool kits and luggage etc. Thats what I want; should have pulled it from the Boxster before I sold it. I like the way the jack fit into the spare too. |
Lo-Fi Version | Time is now: 21st May 2024 - 03:53 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |