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[alko]

Just noticed some serious sidewall cracking on the rear tire of my 2017 DSR. I checked the DOT stamp on the tire and the last 4 digits are 4414 meaning they were manufactured during the 44th week of 2014. Safetywise thats unacceptable!
My front tire is better at 0716.
I don't think this would ever happen on a car.
Curious if anyone else has a similar situation.

[flattetyre]

Your bike was new in 2016, I don't think that's a big deal. The tires will still outride your skill level and a little cracked rubber doesn't mean it's going to explode.

[Richard230]

The tires of my 2018 S, manufactured in November 2017, are 44/15 at the rear and 19/17 at the front.  I think I am seeing a trend here.   

Zero must have received a discount on two year old rear tires. 

No cracking on my tires, but they are looking a little yellowish. 

[Curt]

Weird that the sidewalls showed cracking. 3 years is still new. It sounds like manufacturing defect, or poor storage conditions with exposure to heat/light, either prior to or after installation. Not confidence inspiring.

My Tundra tires started to show cracking in the sidewall around the 10 year mark when I replaced them. That was 10 years sitting in direct south-facing sunlight, so it was not too surprising.

[KrazyEd]

As mentioned in a previous thread, not necessarily to introduce chemicals to rubber.
MANY years ago, a lady friend was always using Armor All on the tires of her 350Z
I did nothing other than regular cleaning on my tires. We had installed the same tires
at similar times and hers started showing weather checking fairly quickly. Mine were
replaced years later without any of the same signs. If that is ALL it is, I have been told
that this isn't an issue for concern.

[alko]

The tires of my 2018 S, manufactured in November 2017, are 44/15 at the rear and 19/17 at the front.  I think I am seeing a trend here.   

What's interesting is they are cracked only on the left side. I would think the right side being tilted more to the sky would weather sooner. My bike was manufactured Nov 2016, so back tire was over 2 years old at time they were installed. I've had the bike a year and has always been stored inside.
At 4-1/2 years old, it shouldnt be cracked as bad as they are.

[jnef]

I think the bigger problem is that you aren’t riding enough to have worn them out already. 

[NEW2elec]

+1  Jnef

I think the law is you can't sale tires that are 6 years old.  Could be a little over filled or been up and down with pressure which will cause sidewall cracks as well.

[alko]

I just figured out how to post pics. I had to install an app to reduce size of pics enough to go on this forum.

[flattetyre]

In this thread a owner complains that the rear tire on his new bike was 2 years old (or, pretty new) when the bike was sold, and is further incensed that tires don't last forever.

Am I missing something?

[jbk]

In this thread a owner complains that the rear tire on his new bike was 2 years old (or, pretty new) when the bike was sold, and is further incensed that tires don't last forever.

Am I missing something?

An owner should expect more than a year before cracking that badly...  something happened to have quickly degraded like that.

But the answer is the ride more!  That solves everything, not just this.


Sent from my iPhone using Tapatalk

[alko]

Just purchased this from amazon to replace it. Had really good reviews. Has anyone else teied them?
Heidenau K60 Scout

[Richard230]

Just purchased this from amazon to replace it. Had really good reviews. Has anyone else teied them?
Heidenau K60 Scout

I have never tried those tires, but I have heard people say that they wear like iron and are very difficult to install because their sidewalls are so stiff.  Good luck and let us know what you think of them.

[NEW2elec]

Well Alko I just checked my 2017 DSR and the tires are 4114 so they are even older than yours. 
But my sidewalls look brand new.  Not even tiny rubber crackle.  I may put a few thousand more miles on them and swap them out for tread wear.
My money is on my guess that tire sat completely flat for a period of time with all the bike's weight on it.  It could be a defective tire of course but if the front one looks fine I'd say the dealer let it go flat and could say "oh man I'd let you test ride it but..." or just didn't notice it.

All that being said/guessed at, I wouldn't ride on that tire if I were you.  When you said cracks I thought a little dry rot or salt wear but that does look bad.

[alko]

Well Alko I just checked my 2017 DSR and the tires are 4114 so they are even older than yours. 
But my sidewalls look brand new.  Not even tiny rubber crackle.  I may put a few thousand more miles on them and swap them out for tread wear.
My money is on my guess that tire sat completely flat for a period of time with all the bike's weight on it.  It could be a defective tire of course but if the front one looks fine I'd say the dealer let it go flat and could say "oh man I'd let you test ride it but..." or just didn't notice it.

All that being said/guessed at, I wouldn't ride on that tire if I were you.  When you said cracks I thought a little dry rot or salt wear but that does look bad.

Very possible, except it's cracked all the way around on that side. Thanks