Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
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.
 

Welcome Guest ( Log In | Register )

2 Pages V  1 2 >  
Reply to this topicStart new topic
> Tires unsafe....
Cal
post Apr 12 2016, 08:36 AM
Post #1


Senior Member
***

Group: Members
Posts: 615
Joined: 19-November 14
From: Philadelphia
Member No.: 18,138
Region Association: North East States



I know this topic has been beaten to death but....
My low mileage '74 2.0L has tires that are over 10 years old with under 2K miles. Should I replace these because they are older and possibly unsafe? The current tires are 165R15....if I replace them I'm thinking of going with the Vredestein Sprint Classic in 165/HR15.
Thoughts....


Attached thumbnail(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Bulldog9
post Apr 12 2016, 08:39 AM
Post #2


Senior Member
***

Group: Members
Posts: 705
Joined: 21-August 13
From: United States
Member No.: 16,283
Region Association: MidAtlantic Region



IRRC 5-6 years is the recommended lifespan of tires, but if they were stored out of the elements and the sidewalls and area where the tread and sidewall meet have no cracks, and no cracks around bead, should be fine, but tires are relatively cheap and worth the safety.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Jett
post Apr 12 2016, 08:43 AM
Post #3


Senior Member
***

Group: Members
Posts: 1,640
Joined: 27-July 14
From: Seattle
Member No.: 17,686
Region Association: Pacific Northwest



I would replace them based on the DOT number an 10 years is too long IMO. We recently purchased a new set of Tires from tire rack and they exploded after 45 minutes on I5. One tire shook for 30 second and then exploded, apparently the belt separated.

BE CAREFUL and get brand new tires.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
billh1963
post Apr 12 2016, 08:57 AM
Post #4


Car Hoarder!
****

Group: Members
Posts: 3,402
Joined: 28-March 11
From: South Carolina
Member No.: 12,871
Region Association: South East States



Yes...replace them. Tires are cheap in the scheme of things.

I have Vredestein 15's on my '76 911.....good tire and very period correct looking

Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rgolia
post Apr 12 2016, 10:36 AM
Post #5


GeoJoe
***

Group: Members
Posts: 704
Joined: 5-February 10
From: PA
Member No.: 11,329
Region Association: North East States



Cal - I recommend the Vredestein Sprint Classic in 185/70/HR15. Keeps the original look but puts a little more rubber on the road.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ChrisFoley
post Apr 12 2016, 10:58 AM
Post #6


I am Tangerine Racing
*****

Group: Members
Posts: 7,934
Joined: 29-January 03
From: Bolton, CT
Member No.: 209
Region Association: None



If there's no sign of the rubber cracking on the surface I'll bet you can get another 2K miles out of them.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DCJosh
post Apr 12 2016, 11:48 AM
Post #7


Member
**

Group: Members
Posts: 77
Joined: 22-February 16
From: Mankato, MN
Member No.: 19,697
Region Association: Upper MidWest



Tires are the only piece of safety equipment which actually touch the road. I would not risk it.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Tom_T
post Apr 12 2016, 12:39 PM
Post #8


TMI....
*****

Group: Members
Posts: 8,318
Joined: 19-March 09
From: Orange, CA
Member No.: 10,181
Region Association: Southern California



QUOTE(Cal @ Apr 12 2016, 07:36 AM) *

I know this topic has been beaten to death but....
My low mileage '74 2.0L has tires that are over 10 years old with under 2K miles. Should I replace these because they are older and possibly unsafe? The current tires are 165R15....if I replace them I'm thinking of going with the Vredestein Sprint Classic in 165/HR15.
Thoughts....


For driving - absolutely replace them at 8 years is the NHTSA recco. You can read up a bunch of info on the Tire Rack site's tech section.

For show - if you do that - then you could keep those on your "perfect" set of wheels, & just swap them on on the Concours grounds. Some folks do that here in SoCal. If not, just sell them to some CW who would use them as such - they look to be Michelin XZX 165R15 in either SR or HR speed rating (technically no speed rating at that age).

The Vreds would be good in either the 165/80HR15 (not the SR version on a 2.0), or the 185/70HR15 (or VR, but more $'s) for more contact patch (but less mpg, if you care about that), as noted above.

However, you might also want to look at Lucas Tires website for their Blockley 165/80HR15 which are a clone to the OE Dunlop SP57 165HR15's with the dog-bone tred pattern.

In any size of these & others sold new today, they'll be made with the newest rubber compounds & belts/plies - so will be even better than the originals.

Cheers! (IMG:style_emoticons/default/beerchug.gif)
Tom
///////
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
worn
post Apr 12 2016, 12:59 PM
Post #9


can't remember
****

Group: Members
Posts: 3,156
Joined: 3-June 11
From: Madison, WI
Member No.: 13,152
Region Association: Upper MidWest



QUOTE(Cal @ Apr 12 2016, 06:36 AM) *

I know this topic has been beaten to death but....
My low mileage '74 2.0L has tires that are over 10 years old with under 2K miles. Should I replace these because they are older and possibly unsafe? The current tires are 165R15....if I replace them I'm thinking of going with the Vredestein Sprint Classic in 165/HR15.
Thoughts....

I bought my 914 from an NFL player who bought it for his wife. She must not have liked it cause while the tires were 19 years old the little nubs were still on them. I decided to lean autocross with them cause they slid like hard plastic on the pavement. Made me pay attention. But only for a short time - they weren't safe on the street and I run what I brung. You are at the end of the lifespan, but no one can give you a black and white answer because how quickly the rubber turns to stone, and how much public menace you are prepared to be are intangibles. Nice wheel BTW! I think at 19 years old the verdict is in - stupid.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
worn
post Apr 12 2016, 01:00 PM
Post #10


can't remember
****

Group: Members
Posts: 3,156
Joined: 3-June 11
From: Madison, WI
Member No.: 13,152
Region Association: Upper MidWest



double post: see below
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
worn
post Apr 12 2016, 01:01 PM
Post #11


can't remember
****

Group: Members
Posts: 3,156
Joined: 3-June 11
From: Madison, WI
Member No.: 13,152
Region Association: Upper MidWest



QUOTE(billh1963 @ Apr 12 2016, 06:57 AM) *

Yes...replace them. Tires are cheap in the scheme of things.

I have Vredestein 15's on my '76 911.....good tire and very period correct looking

Attached Image

Now that looks very nice (IMG:style_emoticons/default/first.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
dcecc1968
post Apr 12 2016, 01:35 PM
Post #12


Member
**

Group: Members
Posts: 252
Joined: 31-December 12
From: Concord, NC
Member No.: 15,313
Region Association: South East States



I would replace them. Don't mess with any tire greater than 6 years old. Six years of rubber compound and plasticizers sitting in the sun (or just sitting). Not worth risking over a few thousand extra miles in my opinion.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
0396
post Apr 12 2016, 02:00 PM
Post #13


Advanced Member
****

Group: Members
Posts: 2,046
Joined: 13-October 03
From: L.A. Calif
Member No.: 1,245
Region Association: Southern California



QUOTE(dcecc1968 @ Apr 12 2016, 12:35 PM) *

I would replace them. Don't mess with any tire greater than 6 years old. Six years of rubber compound and plasticizers sitting in the sun (or just sitting). Not worth risking over a few thousand extra miles in my opinion.


I was given the same advise from my Porsche Master Tech.
He also responded, if and when it comes apart, your not going to be happy, but if you simply want to move your car from one side of the garage- no issues.

How do you think the C GT that crash in LA a few years ago and killed the two individuals happened....and the driver was a race car driver......it was on 10 + year old tires.
If you value your life and toy, change them out as suggested above.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Cal
post Apr 12 2016, 05:12 PM
Post #14


Senior Member
***

Group: Members
Posts: 615
Joined: 19-November 14
From: Philadelphia
Member No.: 18,138
Region Association: North East States



QUOTE(Tom_T @ Apr 12 2016, 02:39 PM) *

QUOTE(Cal @ Apr 12 2016, 07:36 AM) *

I know this topic has been beaten to death but....
My low mileage '74 2.0L has tires that are over 10 years old with under 2K miles. Should I replace these because they are older and possibly unsafe? The current tires are 165R15....if I replace them I'm thinking of going with the Vredestein Sprint Classic in 165/HR15.
Thoughts....


For driving - absolutely replace them at 8 years is the NHTSA recco. You can read up a bunch of info on the Tire Rack site's tech section.

For show - if you do that - then you could keep those on your "perfect" set of wheels, & just swap them on on the Concours grounds. Some folks do that here in SoCal. If not, just sell them to some CW who would use them as such - they look to be Michelin XZX 165R15 in either SR or HR speed rating (technically no speed rating at that age).

The Vreds would be good in either the 165/80HR15 (not the SR version on a 2.0), or the 185/70HR15 (or VR, but more $'s) for more contact patch (but less mpg, if you care about that), as noted above.

However, you might also want to look at Lucas Tires website for their Blockley 165/80HR15 which are a clone to the OE Dunlop SP57 165HR15's with the dog-bone tred pattern.

In any size of these & others sold new today, they'll be made with the newest rubber compounds & belts/plies - so will be even better than the originals.

Cheers! (IMG:style_emoticons/default/beerchug.gif)
Tom
///////


I've never heard of Blockley tires.....are they any good?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
914bub
post Apr 12 2016, 05:36 PM
Post #15


Member
**

Group: Members
Posts: 433
Joined: 16-August 13
From: Modesto CA.
Member No.: 16,260
Region Association: None



I'd replace them. That having been said the tires on my car would be 26 years old IF they were installed the day it was garaged in Portland Or. in 1990. I doubt they were.(I haven't checked date codes). I drive my car everyday on those tires. I know,........ the shock and horror! I would never drive on those tires if it weren't for the fact that I drive it 3/4 of a mile each way to work, under 25 MPH, as it's a residential commute. I can feel how "square" they are. It's not like I don't want to replace them but with 4 kids and medical bills it's not in the cards right now. BDMF for sure. (IMG:style_emoticons/default/wacko.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
turk22
post Apr 12 2016, 05:44 PM
Post #16


Treetop Flyer
***

Group: Members
Posts: 735
Joined: 27-July 12
From: Cincinnati OH
Member No.: 14,725
Region Association: Upper MidWest



I didn't replace mine....

Until it was too late:

Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ConeDodger
post Apr 12 2016, 06:48 PM
Post #17


Apex killer!
***************

Group: Members
Posts: 23,606
Joined: 31-December 04
From: Tahoe Area
Member No.: 3,380
Region Association: Northern California



QUOTE(Jett @ Apr 12 2016, 10:43 AM) *

I would replace them based on the DOT number an 10 years is too long IMO. We recently purchased a new set of Tires from tire rack and they exploded after 45 minutes on I5. One tire shook for 30 second and then exploded, apparently the belt separated.

BE CAREFUL and get brand new tires.


(IMG:style_emoticons/default/blink.gif) wait... You recommend he replace the 10 year old tires and the give an example of new tires exploding on I5?

I'm confused! New tires are bad too??? (IMG:style_emoticons/default/sad.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ConeDodger
post Apr 12 2016, 06:51 PM
Post #18


Apex killer!
***************

Group: Members
Posts: 23,606
Joined: 31-December 04
From: Tahoe Area
Member No.: 3,380
Region Association: Northern California



As someone has already mentioned, you could keep them on a perfect set of wheels and use them during concours events. Preservation cars are all the rage at these events.

If you don't do that, find a way to get them to Harvey Weidman. He has customers looking for vintage original factory tires occasionally...
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
0396
post Apr 12 2016, 07:14 PM
Post #19


Advanced Member
****

Group: Members
Posts: 2,046
Joined: 13-October 03
From: L.A. Calif
Member No.: 1,245
Region Association: Southern California



QUOTE(turk22 @ Apr 12 2016, 04:44 PM) *

I didn't replace mine....

Until it was too late:

Attached Image


Please don't post pictures like this. People might actually believe some of the excellent advice given...
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
914bub
post Apr 12 2016, 08:00 PM
Post #20


Member
**

Group: Members
Posts: 433
Joined: 16-August 13
From: Modesto CA.
Member No.: 16,260
Region Association: None



QUOTE(396 @ Apr 12 2016, 06:14 PM) *

QUOTE(turk22 @ Apr 12 2016, 04:44 PM) *

I didn't replace mine....

Until it was too late:

Attached Image


Please don't post pictures like this. People might actually believe some of the excellent advice given...



If your talking about me, I in NO WAY endorse old tires. I'm using mine in a VERY limited capacity. Being a 20 year automotive master technician this goes against all I was taught at De Anza Auto Tech. I use mine for less than a mile commute and I'm pretty sure given my racing experience I won't be spinning out of control with a tire blow out. at 25 MPH.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post

2 Pages V  1 2 >
Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



- Lo-Fi Version Time is now: 2nd June 2024 - 10:49 AM