Slick tires...Shelf Life? - Suzuki GSX-R Motorcycle Forums Gixxer.com

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post #1 of 21 (permalink) Old 08-13-2015, 10:37 AM Thread Starter
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Question Slick tires...Shelf Life?

Hello Folks,
Quick question, I have a set of Dunlop Slick tires for about 6 to 7 yrs old stored Indoor in the Bay Area California. I would like to check in here if you guys have any thoughts. They are stored w/o the rims.

Really need some help. Thank you.
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post #2 of 21 (permalink) Old 08-13-2015, 10:46 AM
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Re: Slick tires...Shelf Life?

4 years if stored indoors, no more! People may still want them for their display or collector bike. Don't even think about riding on them though!
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post #3 of 21 (permalink) Old 08-13-2015, 03:31 PM
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Re: Slick tires...Shelf Life?

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Originally Posted by JamminJesus View Post
4 years if stored indoors, no more! People may still want them for their display or collector bike. Don't even think about riding on them though!
+1

Hell, I wouldn't use a tire more than 2 years old, especially at track speeds.
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post #4 of 21 (permalink) Old 08-13-2015, 04:35 PM Thread Starter
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Re: Slick tires...Shelf Life?

Would you mind sharing me where you get the 4yr shelf life information? Any particular web source I could look into and review would certainly help me. Thanks
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post #5 of 21 (permalink) Old 08-13-2015, 05:04 PM
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Re: Slick tires...Shelf Life?

Just talk to any trackside tire vendor... They will tell you.
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post #6 of 21 (permalink) Old 08-13-2015, 05:49 PM
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Re: Slick tires...Shelf Life?

Yeah my old broken bones will tell you about the 4 year limit...
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post #7 of 21 (permalink) Old 08-13-2015, 06:03 PM
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Re: Slick tires...Shelf Life?

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Originally Posted by Anthony D View Post
+1

Hell, I wouldn't use a tire more than 2 years old, especially at track speeds.
I hear ya, I don't go over 3 years personally just to be safe. You can really never go wrong at 2 years.
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post #8 of 21 (permalink) Old 08-13-2015, 07:53 PM
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Re: Slick tires...Shelf Life?

I feel like a broken record... For what it's worth to whoever reads this you shouldn't run your street tires over the 4 year mark either.
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post #9 of 21 (permalink) Old 08-14-2015, 06:32 AM
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Re: Slick tires...Shelf Life?

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Originally Posted by JamminJesus View Post
I feel like a broken record... For what it's worth to whoever reads this you shouldn't run your street tires over the 4 year mark either.
I have a race take off SC2 Supercorsa dot xx09 rear on the street wheel, I did a few trackdays, it's been to Assen and back and still has plenty of grip. On the track I currently have some xx11 Dunlop UK slicks and no problems with grip, all are race take offs. You must have bad rubber on the other side of the pond.
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post #10 of 21 (permalink) Old 08-14-2015, 07:22 AM
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Re: Slick tires...Shelf Life?

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Originally Posted by -JK750- View Post
I have a race take off SC2 Supercorsa dot xx09 rear on the street wheel, I did a few trackdays, it's been to Assen and back and still has plenty of grip. On the track I currently have some xx11 Dunlop UK slicks and no problems with grip, all are race take offs. You must have bad rubber on the other side of the pond.
Either bad rubber or we all just suck or our tire vendors don't know what the fuck they are talking about.

Pick a reason...
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post #11 of 21 (permalink) Old 08-14-2015, 07:38 AM
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Re: Slick tires...Shelf Life?

Or they just want to sell more tires...
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post #12 of 21 (permalink) Old 08-14-2015, 09:36 AM
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Re: Slick tires...Shelf Life?

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Originally Posted by -JK750- View Post
I have a race take off SC2 Supercorsa dot xx09 rear on the street wheel, I did a few trackdays, it's been to Assen and back and still has plenty of grip. On the track I currently have some xx11 Dunlop UK slicks and no problems with grip, all are race take offs. You must have bad rubber on the other side of the pond.
Quote:
Originally Posted by -JK750- View Post
Or they just want to sell more tires...
Compounds harden dangerously after a few years. Just because you've gotten away with it doesn't mean you're not risking your life! The problem is you don't know how bad the compound has gotten until it lets go without warning in a fast turn. It may look good, it may feel good to the touch! Again my broken bones will tell you so. Get rid of those old tires JK750 we want to keep you around longer!
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post #13 of 21 (permalink) Old 08-14-2015, 10:21 AM
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Re: Slick tires...Shelf Life?

^There are too many variables in the mix (how the tires are stored, climate, etc.) I'll change the tires when they need to be changed, I don't use a calendar for that.
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post #14 of 21 (permalink) Old 08-14-2015, 10:33 AM
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Re: Slick tires...Shelf Life?

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Originally Posted by -JK750- View Post
^There are too many variables in the mix (how the tires are stored, climate, etc.) I'll change the tires when they need to be changed, I don't use a calendar for that.
Don't be ridiculous, of course there are but as a general rule 3-4 years protects your neck! You sound just like me before my last big crash. Be careful buddy.
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post #15 of 21 (permalink) Old 08-14-2015, 04:00 PM Thread Starter
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Re: Slick tires...Shelf Life?

I am with JK750 on this one bro. For instance, why do people say that the Golden rule is to change your engine oil in your car every 3k miles? They say that has been the traditional way back in the days. Granted, it would not hurt your car but I still need to know why this is practiced. Obviously, the TECHNOLOGY had advanced and as well as the formula so I was skeptical with that rule.

Fortunately, I was able to work in the R&D lab for engine oil. I found out that the 3k miles rule is not applicable but it's still encourage, it is MARKET oriented.

IMO, the <4yr rule is a good rule and I will encourage that as well since I have no Lab based background to support my cynical brain.

I am still curious though, where did that 4yr rule came from?

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post #16 of 21 (permalink) Old 08-14-2015, 05:27 PM
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Re: Slick tires...Shelf Life?

You are out of your minds running a tire that old on a sportbike at any speeds, let alone track speeds.

Fuck that noise, $400 tires are cheaper than a crash.

Talk to any racer/track day coach/trackside tire vendor (even those you don't buy your tires from) and they will all tell you the same thing.

A 6-year old tire at track pace at Assen? You must be slow as hell for that to have actually worked.
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post #17 of 21 (permalink) Old 08-14-2015, 05:30 PM
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Re: Slick tires...Shelf Life?

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Originally Posted by -JK750- View Post
Or they just want to sell more tires...
In case you didn't notice I was being sarcastic because you always seem to post something contrary, so I was giving you a list of imaginary reasons to pick from.
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post #18 of 21 (permalink) Old 08-14-2015, 09:14 PM
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Re: Slick tires...Shelf Life?

Quote:
Originally Posted by GSXR750DOG View Post
I am with JK750 on this one bro. For instance, why do people say that the Golden rule is to change your engine oil in your car every 3k miles? They say that has been the traditional way back in the days. Granted, it would not hurt your car but I still need to know why this is practiced. Obviously, the TECHNOLOGY had advanced and as well as the formula so I was skeptical with that rule.

Fortunately, I was able to work in the R&D lab for engine oil. I found out that the 3k miles rule is not applicable but it's still encourage, it is MARKET oriented.

IMO, the <4yr rule is a good rule and I will encourage that as well since I have no Lab based background to support my cynical brain.

I am still curious though, where did that 4yr rule came from?
its actually law here in australia.... and it's because tyres harden over time, unless you store them in the perfect condition (which may include submersing them in a fluid), which will vary from tyre to tyre.
it's not a gimmic, and anyone on old tyres is an idiot, including me for not checking the tyre age on my gsx-r when i first bought it, and taking the guys word for them being 2 years old with 1000km on them, he was right about the 1000km bit, they looked brand new, and thats why i trusted him, but the 2 years was horseshit. they were 7 and 8 years old.

as for your oil comment, i disagree, at 3,000m/5,000km, most oils start breaking down, i know this from my own analysis and from working along side engine development teams at saab, bmw and suzuki.
the technology in oil has improved a lot over the years, but older oils actually held their detergency, lubrication and anti shear characteristics better due to the chemical compounds being legal, however the engine technology lacked.
engines now seal better, use cleaner fuels, and have better oiling systems then they did 30-40 years ago.

long life oils designed for euro cars, that is a different kettle of fish, those oils will go the distance, quite comfortably, but an earlier change is still better. the less crap in an engine the better it will run, i've pulled down motors i've maintained since new with 300,000km on them and not a single mark on any bearing, in scope wear, a linish and hone then reassemble.

in fact almost every customer who will allow me to service on my scheduling it ends up costing them about 15% less to run in the long term even with my servicing costs included.

oh and another thing, oil that is over 6 months old, will most likely be polluted, unless the vehicle is kept in a pretty good environment. (low humidity, stable temp, non ethanol based fuels used, allowed to warm up for a proper amount of time before being driven etc)
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post #19 of 21 (permalink) Old 08-15-2015, 03:00 AM
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Re: Slick tires...Shelf Life?

Quote:
Originally Posted by Anthony D View Post
You are out of your minds running a tire that old on a sportbike at any speeds, let alone track speeds.

Fuck that noise, $400 tires are cheaper than a crash.

Talk to any racer/track day coach/trackside tire vendor (even those you don't buy your tires from) and they will all tell you the same thing.

A 6-year old tire at track pace at Assen? You must be slow as hell for that to have actually worked.
Who said anything about riding at Assen or any track.I said there and back. Jeesus was talking about street tires. In general you really like to jump to conclusions without knowing.

I was just saying that if an old dot race tire works on the street, then a street tire shouldn't have any problem.
copied from another forum-

I spoke with a Pirelli rep on the phone yesterday. Got the "official" recommended shelf life for their tires...

Street tires, including the Diablos and Diablo Corsas - 5 - 7 years.

Last edited by -JK750-; 08-15-2015 at 03:15 AM.
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post #20 of 21 (permalink) Old 08-15-2015, 06:36 AM
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Re: Slick tires...Shelf Life?

Quote:
Originally Posted by -JK750- View Post
I have a race take off SC2 Supercorsa dot xx09 rear on the street wheel, I did a few trackdays, it's been to Assen and back and still has plenty of grip.
This sentence here sounds to me like you took a tire from '09 amd rode it at Assen. Does it not?
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