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2019 Ninja 1000
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Discussion Starter · #1 ·
This is off my 2019 that has about 3000 miles on the tire and I like the canyons primarily.
I've seen this happen in the center, but never the sides. Never ridden this on track and while I like to lean, I'm not the fastest out there.

There's nothing rubbing against it, tire pressure is checked and adjusted before every ride.

Went to Cycle Gear and not enough tread to cover under the purchased warranty. Calling Michelin in the morning.

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Nope, that is a first. Will be interesting to see what they say.
 

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It looks like a cold tear. It happened to my Q3+ also and it shows up after riding in the fall. For mine though, Dunlop replaced it.
They instructed me to go to cyclegear so they can physically inspect it and measure thread depth. The guy from Dunlop sent me new ones direct to my home.

I hope it works out with Michelin too.
 

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2021 Ninja 1000 SX
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tire pressure is checked and adjusted before every ride
What (cold) pressure do you normally run.
I had Road 5 on my last two bikes and never had anything like what your tire is showing and they lasted twice your distance.
But I mostly do more a more general mix riding - not specialising in canyons.
Best of luck with Michelin's response.
ps - what's "a cold tear" that Angelo refers to??
 
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See how the pattern isnt constant? Almost like the tire is bouncing, when leaned over? It is visible on both sides.

Tearing, cold or hot, usually looks more uniform and would be easier to diagnose if the rear shock was working properly, and I dont think it is.

I would look at the rear shocks setting and consider backing off the rebound damping. And dont be surprised if you cant fix this.

If your suspension isnt able to deal with the various loads, the force goes into he tires and you see patterns like this.

If a tire company is offering warranty for wear like this, they are doing it for good will. Not because of a defect.
 

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Yeah, it does look too uniform for a cold tear. Very unusual.

NT how many miles did you put on your first set of tires before you did the suspension mod?
 

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Minlak, you just made an f-ing brilliant point, and you deserve a prize. Who said it could only be one issue at a time? And, if there is more than one issue, where do you start?

That's why you cant use tire wear is your 100% guide to what's wrong. We need to find out how the bike felt. If he loves the way the bike was handling, do you give up, make no changes, and just eat it with regards to tire wear?

You can also see we have a tire being used out of its element. Not that you cant, but I imagine most sport touring tires get worn down in the middle. Not from cornering wear.

This is where it would be interesting to have him do the same riding on a stiffer tire.
 

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Discussion Starter · #11 ·
What (cold) pressure do you normally run.
I had Road 5 on my last two bikes and never had anything like what your tire is showing and they lasted twice your distance.
But I mostly do more a more general mix riding - not specialising in canyons.
Best of luck with Michelin's response.
ps - what's "a cold tear" that Angelo refers to??
I keep the rear between 40 and 42.
 

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Discussion Starter · #12 ·
Yeah, it does look too uniform for a cold tear. Very unusual.

NT how many miles did you put on your first set of tires before you did the suspension mod?
I did the suspension mods at around 9000 miles. Just had sag set and rebound/compression adjusted too.
 

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Discussion Starter · #13 ·
Minlak, you just made an f-ing brilliant point, and you deserve a prize. Who said it could only be one issue at a time? And, if there is more than one issue, where do you start?

That's why you cant use tire wear is your 100% guide to what's wrong. We need to find out how the bike felt. If he loves the way the bike was handling, do you give up, make no changes, and just eat it with regards to tire wear?

You can also see we have a tire being used out of its element. Not that you cant, but I imagine most sport touring tires get worn down in the middle. Not from cornering wear.

This is where it would be interesting to have him do the same riding on a stiffer tire.
I like the bike way better now that I've adjusted the suspension. But, I suspect I am using it more for sport than I should.
 

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You have the penske shock. I didn't remember that.

I would play with the rebound. Try reducing it 2 or 3 clicks . I think this is off by enough that the bike is going to feel better once its correct.

I would also not run a soft carcass tire. Michelins are one of the softest.. With the penske shock, you dont need the squishy tire to be part of the suspension.
 

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R5 (and all of the current ST tires) are multi-compound, with the outer band a softer mix than nearer the center (2CT in michelin-speak)..that looks like it is happening just on the soft outer stuff..

Looks to me like the tire was worked harder than its designed for and you should be on something sportier.. Same kind of wear on both sides, basically all the way around..i dont think anyone is going to warranty that but I'd be happy for you if i was wrong.

ahm
 

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That what my Super Corsa's looked like after a hard day at the track running 28-30 lbs. Air them back up and run them back out on the street for a few miles and they looked normal again.
 

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Discussion Starter · #19 ·
Ended up that Michelin wasn't going to warranty it because tread was mostly used up. Cycle Gear gave me 25% off a new one. The front is still good and so when I'm ready for the next set, I will try something more sport oriented.

Not trying to humble brag or anything like that, but I don't think I'm all that fast on the bike compared to others. Surprises me that the tire wore out so fast for a tire that people say you can canyon carve for over 5000 miles a set.

In the end, I'm very happy that I caught it and nothing bad happened. Could have ended bad because the next canyon i was going to take has some nice fast corners. I could have been FUBARed
 
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