Flat tire - mounted the spare - tread separation after 20 miles
#1
Flat tire - mounted the spare - tread separation after 20 miles
I caught a huge screw in the right rear earlier this week and needed to deploy the spare. It mounted right up and the compressor did a nice job of inflating the tire. I drove off and soon heard something amiss in the right rear.
I was very surprised to see that the tread had separated from about 20% of the tire and the rest was clearly going to come off soon.
I had driven only about 20 miles and I'm all but certain that I was under 50 m.p.h for all of it. As far as I know, this spare tire came with the car and is therefore 27 or 28 years old. So - it's not a shock that there was an issue. But geez....
Is there a source for a replacement spare tire? I had been planning a 2,500 mile trip towards the end of the month but won't be making the trip without a functioning spare.
Note
- AAA membership (paid up)
- Fix-a-flat on board
- Phone charged
TIA
-Chris
I was very surprised to see that the tread had separated from about 20% of the tire and the rest was clearly going to come off soon.
I had driven only about 20 miles and I'm all but certain that I was under 50 m.p.h for all of it. As far as I know, this spare tire came with the car and is therefore 27 or 28 years old. So - it's not a shock that there was an issue. But geez....
Is there a source for a replacement spare tire? I had been planning a 2,500 mile trip towards the end of the month but won't be making the trip without a functioning spare.
Note
- AAA membership (paid up)
- Fix-a-flat on board
- Phone charged
TIA
-Chris
#2
Rennlist Member
There is no replacement available that I know of (and I would be very happy if this is wrong).
Was there any visible cracking or other degradation of the rubber?
We had occasion to use ours a few years ago, about 125 miles, worked fine with no issues.
My only suggestion would be to find a replacement, 928 Int'l has them listed for $417 new (86.5-91, the "red" one).
Of course everyone else will tell you that you don't need a spare, but I'm with you-- we often drive long distances in lonely parts of the country.
Was there any visible cracking or other degradation of the rubber?
We had occasion to use ours a few years ago, about 125 miles, worked fine with no issues.
My only suggestion would be to find a replacement, 928 Int'l has them listed for $417 new (86.5-91, the "red" one).
Of course everyone else will tell you that you don't need a spare, but I'm with you-- we often drive long distances in lonely parts of the country.
Last edited by jcorenman; 10-02-2013 at 12:34 PM. Reason: clarified new vs used
#3
Funny thing about all of this is, when I got my compressor, I tested it by inflating the spare. A second test, about a year later, I left the tire inflated for about 30 days, looking for a slow leak etc (travelling for work & 928 not in daily use). The thing looked great and had probably not been used, ever. So I thought I was squared away.
Local dealer has new ones available, $538 + tax + shipping and they are all in Germany. Ugh...
Kind of dreading this right now.
Local dealer has new ones available, $538 + tax + shipping and they are all in Germany. Ugh...
Kind of dreading this right now.
#4
Vegas, Baby!
Rennlist Member
Rennlist Member
I've got the spare, doubt it's ever been used. I also carry "Flat Fixer" the factory compressor, and a plug kit. If you pick up a nail or normal puncture, the plug kit works great. Just use the compressor to pump up the tire.
BTW, I carry a plug kit in all my cars, and a can of "Flat Fixer."
BTW, I carry a plug kit in all my cars, and a can of "Flat Fixer."
#5
Team Owner
Thanks for posting this info as its a good data point.
I would ask why did you not plug the tire,
plug kits take all of 5 mins to operate.
NOTE using the spare is really a questionable event, and should be a last step measure
NOTE filling the spare to see if it holds air may have damaged the tire,
as this would have added moisture to the tire.
I would think that after its inflated once the spare should be replaced.
NOTE if you buy one from Germany I would also guess that the tire will be old,
and its been sitting in a stock house for a few years,
IDK if there is a tire MFG date for the spare
I would ask why did you not plug the tire,
plug kits take all of 5 mins to operate.
NOTE using the spare is really a questionable event, and should be a last step measure
NOTE filling the spare to see if it holds air may have damaged the tire,
as this would have added moisture to the tire.
I would think that after its inflated once the spare should be replaced.
NOTE if you buy one from Germany I would also guess that the tire will be old,
and its been sitting in a stock house for a few years,
IDK if there is a tire MFG date for the spare
#6
Shameful Thread Killer
Rennlist Member
Rennlist Member
http://www.ebay.com/sch/sis.html?_nk...+Wheel+1974+89
http://www.ebay.com/itm/Porsche-928-...item25835698c0
$112 BIN plus shipping.
http://www.ebay.com/itm/Porsche-928-...item3f2a03b7fb
$50 and bidding.
http://www.ebay.com/itm/Porsche-928-...item25835698c0
$112 BIN plus shipping.
http://www.ebay.com/itm/Porsche-928-...item3f2a03b7fb
$50 and bidding.
#7
Basic Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
11 sitting in Germany and my price is $468 - delivery to me 3 days.
No tax and shipping to MN about $30
No tax and shipping to MN about $30
__________________
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission? George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission? George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Trending Topics
#9
Rennlist Member
#10
Chronic Tool Dropper
Lifetime Rennlist
Member
Lifetime Rennlist
Member
IIRC, the spare requires 60-70 PSIG inflation pressure. If it's run underinflated, the tread will fracture and delaminate.
I'm with DocMirror and others regarding having a plug kit in the car. They are cheap (under $10) most places, and can be a real daysaver out on the road. Warning though -- the little tube of glue in most kits deteriorates over time, and is a one-time use item once it's been opened. Rubber cement or yellow contact cement is a good substitute. I keep a small can of yellow contact cement with the kit, and dip the plug in it after it's in the insertion tool. I get to clean up the tool when I get home I guess, but it's net a lot cleaner than trying to coat the plug from that tube with your fingers.
So far the factory spare is unused, a fall-back if I can't plug the road tire.
Reference- in my sixteen years and 80k of ownership, only one tire incident, with a screw embedded within a mile of the house. I heard it click-click-clicking on the pavement, no air loss, and drove it home for the fix. The wheel-tire did need to come off the car to get a good attack at the hole with the plug tool. The tire was close to replacement, so didn't get a followup pro repair.
I'm with DocMirror and others regarding having a plug kit in the car. They are cheap (under $10) most places, and can be a real daysaver out on the road. Warning though -- the little tube of glue in most kits deteriorates over time, and is a one-time use item once it's been opened. Rubber cement or yellow contact cement is a good substitute. I keep a small can of yellow contact cement with the kit, and dip the plug in it after it's in the insertion tool. I get to clean up the tool when I get home I guess, but it's net a lot cleaner than trying to coat the plug from that tube with your fingers.
So far the factory spare is unused, a fall-back if I can't plug the road tire.
Reference- in my sixteen years and 80k of ownership, only one tire incident, with a screw embedded within a mile of the house. I heard it click-click-clicking on the pavement, no air loss, and drove it home for the fix. The wheel-tire did need to come off the car to get a good attack at the hole with the plug tool. The tire was close to replacement, so didn't get a followup pro repair.
#11
Shameful Thread Killer
Rennlist Member
Rennlist Member
Oh, sorry I jumped the shark with my ebay link. I withdraw my suggestion and advise the OP to shop through Roger, and only through Roger.
#12
Shameful Thread Killer
Rennlist Member
Rennlist Member
I did not advise plugging. In fact, I'm not a fan of plugging any high speed tire. It would be a last resort to get to a shop where proper repairs can be made. I would use tire goop before I would plug. If tire goop and/or fix-a-flat can be made to work until getting to a tire shop that is advisable. Plugs can often damage the internal radial ply belt of the tire beyond repair. A proper inside grind, patch, and dress would be suitable but again, for high speed tires plugging is a bad mojo.
#13
When you need to get home the plug is a great option. Would I go fast on it? Not likely. The quality of the repair depends on the puncture wound. If it is a straight hole a plug will yield many secure miles.
I haven't searched yet but I would guess there should be a generic teeny tiny tire available for a spare for cheep.
I haven't searched yet but I would guess there should be a generic teeny tiny tire available for a spare for cheep.
#14
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member