Tyre damage - why?

[BMW_BeMyWings]

Hi people, Happy 2019 to you all.

I was wondering if people could comment on this. How can damage like this happen? Left with a good tyre and after about 150km of Northland roads (all sealed) I ended up with this. Tyre is made in week 42 in 2015.

https://i.postimg.cc/y8K8m1Sg/Tyre.jpg

Cheers

Peter

[Scubbo]

what the.... she can't have been all good when you left it looks worn to death, how many KMs since it was new?.....

can see by the profile chicken-strip that you've used it for a LONG time over many KM's do better checks before you set off............................................... ............. and look after your bike before you become another statistic through maintenance neglect

https://www.webbikeworld.com/wp-content/uploads/2013/12/michelin-anakee-3-tires.jpg

as soon as that profile on the edge started to happen you should have moved to a new set .....................................

[BMW_BeMyWings]

what the.... she can't have been all good when you left it looks worn to death, how many KMs since it was new?.....

Checked the tyre before I left. No damage. Checked tread depth last week with one of those measurement thingies and it was still legal. I was planning to replace the tyres in February because that's when the WOF is due. The tread on the right side of the tyre looks worn on the photo but that's because of the light/shadow. Look at the top of the tyre and you see it is still legal. Yes the tyre is not in new condition. But it wasn't worn out to an extend that it would start to disintegrate.

I don't know how many k's are on those tyres because they were on the bike when I bought it. I put less than 1000k's on them in the time I owned the bike.

Cheers

Peter

[Scubbo]

Tread depth on a motorcycle is NOT LIKE A CAR!!!!!! ... swap both tires now take it to a shop and get it done and a full once over while you're at it, you have no clue!

[BMW_BeMyWings]

Sorry scubbo can't keep up with your edits . Ok I see what you mean now. Thanks for the image. So the tyres were worn down on the sides.

Will take more care in the future, thanks.

Cheers

Peter

[BMW_BeMyWings]

Tread depth on a motorcycle is NOT LIKE A CAR!!!!!! ... swap both tires now take it to a shop and get it done and a full once over while you're at it, you have no clue!

I think we all were at a stage once where we had no clue, right? That's why we ask questions.

Cheers

Peter

[Scubbo]

please while you are still alive, trailer the bike to a bike-shop and get them to check it over and fit new shoes! --- last thing you want to do is have a crash on such a big bike because of a mechanical fault, hard enough to trust others on the road while riding without the added risk of an unmaintained bike between your thighs ---- anyway happy 2019 :laugh:

[george formby]

Whoopsie.

Yeah, as stated. From "she'll be right" to "oh shit" in one ride. Hot roads, coarse chip seal, big bike = rapid wear.

I've had a similar experience a couple of times but not as dramatic. I live oop north, too. Started a ride with a marginally legal tyre and arrived home with a slick shoulder.

Dual (soft) compound and thinner rubber on the shoulder / edge of the tyre..

If nothing else, change a bit sooner to avoid punctures.

When that tyre comes off, feel how thin the rubber is on the sides compared to the centre.

How much of the 150km was going up and down the Mangamukas?:whistle:

What are your tyre pressures like?

[jasonu]

Ride 'em 'till they blow!!!!!

[BMW_BeMyWings]

Whoopsie.

Yeah, as stated. From "she'll be right" to "oh shit" in one ride. Hot roads, coarse chip seal, big bike = rapid wear.

I've had a similar experience a couple of times but not as dramatic. I live oop north, too. Started a ride with a marginally legal tyre and arrived home with a slick shoulder.

Dual (soft) compound and thinner rubber on the shoulder / edge of the tyre..

If nothing else, change a bit sooner to avoid punctures.

When that tyre comes off, feel how thin the rubber is on the sides compared to the centre.

How much of the 150km was going up and down the Mangamukas?:whistle:

What are your tyre pressures like?

Thanks mate, yes it was a wake up call. I was shocked when I saw the damage. I did go across the Maungamukas, Okaihau, Kerikeri and then Matauri Bay. Saw the damage when I stopped at the lookout towards Tauranga Bay. The bike was sold to me with "good tyres". As a newb I trusted the seller too much. I also got a WOF with those tyres in Feb 2018. Haven't been riding much since then since the bike was out of order for a while. I only did around 1000k since the WOF in Feb 2018.

Unfortunately it isn't that easy up here to get a bike serviced. No bike shops apart form the quad bike sellers who also do two wheel farm bikes. I ordered new rubber and will get them put on hopefully next week. But the way it is up here I have to remove the wheels form the bike myself. No shop up here does this for me. I asked around and also spoke to bikers up here.

Anyway, I learned my lesson and I am glad it turned out without any damage to myself and the bike. Maybe other newbies can learn from my stuff up.

Tyre pressure. I keep the front at 32 psi and the rear at 36 psi. As per manual/workshop handbook.

Cheers

Peter

[rok-the-boat]

The reason is ... too many corners. Drive straighter and wear out the centre a bit more. Some tread left there ...

[BMW_BeMyWings]

The reason is ... too many corners. Drive straighter and wear out the centre a bit more. Some tread left there ...

Great advice, thanks. I'll just ride up and down the Awanui straight from now on.

Thanks

Peter

[george formby]

The reason is ... too many corners. Drive straighter and wear out the centre a bit more. Some tread left there ...

:yes:Norfland, the place to be for even tyre wear.....

Town and Country in Kerikeri will do ride in / ride out for tyres.

[FJRider]

Great advice, thanks. I'll just ride up and down the Awanui straight from now on.

Thanks

Peter

I suspect you may have had an inflation issue as well. Under inflation maybe ... but being parked up at your place might be safer for you long term ... :shifty:

[BMW_BeMyWings]

Tread depth on a motorcycle is NOT LIKE A CAR!!!!!!

So how is it different and how do you check?


The legal minimum tread depth is 1.5mm in all the ‘principal grooves’ around the entire circumference of the tyre. ‘Principal grooves’ are the ones that have a tread depth indicator in them: these are the thin ‘flaps’ of rubber that sit crosswise in the groove and they are 1.5mm in height. Measure tread depth with a gauge or a steel ruler and make sure you do it at several places around the circumference.
https://www.rideforever.co.nz/working-on-your-bike/maintaining-your-bike/tyres/

I find this a bit confusing. No "flaps of rubber" in the grooves of my tyre. It didn't help me to know that my tyre was bad. I measured it over the whole circumference of the tyre and it was in the limit.I used this thing I have on my keyring and it showed "Replace" which I was planning to do anyway.
https://i.postimg.cc/fRqvPRQy/20190102-111343.jpg

Cheers

Peter

[BMW_BeMyWings]

being parked up at your place might be safer for you long term ... :shifty:

So you were born as an expert motorbike owner. Good for you

Cheers

Peter

[george formby]

The wear indicators in the tread may be small raised blocks in the groove. I'm struggling to see any in the photo, though.

Any hoo, onwards and upwards.

If nothing else it demonstrates how much load and heat a bike tyre generates. Particularly on a Bavarian behemoth..... :laugh:

[caspernz]

https://youtu.be/QoIFaPFMmv4

Here's the basics as explained by Ari, good a place as any to expand your knowledge ;)

[AllanB]

Reckon you answered your own question of how it happened.

Started as just on 'legal' and you went for a decent fat on the bike in the Summer heat on NZ 40 grit sandpaper roads.

Heat, power, road abrasion killed it quickly.

Alternatively you had something loose dragging on the right side of a worn tyre that churned it out.

When they pull the tyre for you ask to see it and place a single finger opposite each other one on the outside of the tyre one inside. You will be surprised how thin the carcass for a modern tyre is.

On the bright side nothing popped.

You know you should have changed it before that ride .......... the point where you are thinking ' just another 500 out of it, is the point you replace it.

And FFS don't be that person who now says 'I got 10,000 kms out of my rear brand XXX tyre....'

[russd7]

looks to be you are learning the KB way of some of the real experts on here who know everything.

as for your tire, I have never had one wear like that, so unable to answer that question but I do know that the last bit of tread seems to disappear real quick.
never rely on a warrant check to advise on when to change tire as most places that do bike warrants understand that tires are expensive and if a bike appears well looked after they let the rider decide, as long as the tire is legal.
every motorcycle tire I have used (which is more quite a few) have had wear limits in the tread.
never trust when a seller says "has good tires".

and as has already been stated, when ya look at a tire and say naaa I can get another 500km out of that, then ya probably wont even get 100 out of it before it is no longer legal.


I take all my wheels out and take em to town, remember bike shops charge by the hour to do tire fitments,

[iYRe]

As the man said, if you think it needs replacing "soon" - it needs replacing now. There is 2 tiny bits of rubber between you and the road. A tyre that worn wont corner well (the carcass is soft), it wont stop well, it wont give you confidence in times of trouble.. I guess its better to get some scrapes from KB nonces than to get them from the road.

[nzspokes]

To me that looks like a rock has got caught between the tyre and swingarm. Look for damage to the swingarm.

But that tyre has been toast for a while.

[OddDuck]

I've had similar (not as bad) on a marginal rear tyre and seen several tyres rapidly wear in the last phase of their life since. Once the rubber starts looking worn, it starts disappearing at a faster and faster rate. The price we pay for high performance tyres?

Understood about the difficulty of getting tyres changed but rubber is cheaper than crash repairs and insurance premium increases... stay sorted and keep riding!

[AllanB]

Viewing it again that tyre has weird wear for the bike (assuming it is the bike in your profile). I'd expect the centre to die first but that has been fair fanged on the sides as if you look at the top of the tyre in that image the profile is odd. From a limited look at the left side it is similar?

Too many donuts at rallies by the previous owner possibly ;)

[FJRider]

So you were born as an expert motorbike owner. Good for you

Cheers

Peter

I know what a bald tire looks like ... so obviously know more than you ... <_<

You're the fuckwit that doesn't/didn't know how to check tread depth properly on your own bike. The legal minimum tread depth is 1.5mm in all the ‘principal grooves’ around the entire circumference of the tyre. In the photo's you posted ... more than half of the "Principal Groves" are missing ... :weird:

Also ... check your insurance policy ... in some policies (on the high price range motorcycles) the bike must be legal. You may have the required labels and stickers ... but if it's not up to WOF standard it's not legal. At a roadside stop you would be issued a ticket and probably pink stickered for that.

Tires do not retain their original profile as they wear ... and depending on where the tire is worn ... how the distortion will vary.

Killing yourself on the road really wouldn't bother us that much ... but the cops doing the investigation into your crash would consider you a complete and total tosser for riding with a tire in that condition. And ACC would consider the levy attached to the license fee ... totally justified .... :blank:

https://www.rideforever.co.nz/working-on-your-bike/maintaining-your-bike/tyres/

[F5 Dave]

Jesus lighten up FJ . Are you an angry drunk? I scoffed when I saw the picture too but let the guy learn from a mistake, we've all made them rather than just being a dick to him so he won't come back.

[BMWST?]

i never ever wear a motorbike tyre to the max.The main reason is when tyres get old they get thin ,then you get punctures,and a pucture on a bike is a PITA.
And the second reason as others have pointed out in a less than polite manner is that a motorcycle (and you)absolutely depends on those two tyres.

[russd7]

I know what a bald tire looks like ... so obviously know more than you ... <_<

You're the fuckwit that doesn't/didn't know how to check tread depth properly on your own bike. The legal minimum tread depth is 1.5mm in all the ‘principal grooves’ around the entire circumference of the tyre. In the photo's you posted ... more than half of the "Principal Groves" are missing ... :weird:

Also ... check your insurance policy ... in some policies (on the high price range motorcycles) the bike must be legal. You may have the required labels and stickers ... but if it's not up to WOF standard it's not legal. At a roadside stop you would be issued a ticket and probably pink stickered for that.

Tires do not retain their original profile as they wear ... and depending on where the tire is worn ... how the distortion will vary.

Killing yourself on the road really wouldn't bother us that much ... but the cops doing the investigation into your crash would consider you a complete and total tosser for riding with a tire in that condition. And ACC would consider the levy attached to the license fee ... totally justified .... :blank:

https://www.rideforever.co.nz/working-on-your-bike/maintaining-your-bike/tyres/
FJ you really seem to be suffering from some sort of neglect and coming on and roasting a new member for no reason does not help the site or the motorcycling community, now we were not all born experts like you obviously have been and some of us have learned from making mistakes and asking valid questions, now you may have seen wear like that on a regular basis over your 45 years of riding but I would hazard a guess that most of us haven't seen that type of wear on modern tires. instead of being a tosser, try offering some real advice or fuck off, your roasting is not helpful.

by the way, definition of expert,

X is the unknown factor
spurt is a drip under pressure
that to me makes an expert an unknown drip under pressure.

[fridayflash]

kiwibiker is home to a few cocksuckers sadly

[SaferRides]

Normally the only time you'll see shoulders worn out before the centre is on the track. Obviously the previous owner didn't leave the tyres in the best shape, but that's a good effort on a GS!

I check my tyres for wear and damage regularly, and now measure the pressure before heading out after getting a slow puncture from a small screw last year. That's about once a week for me. Tyres are just so important on a motorbike.

If you're mainly riding on roads, Michelin do an adventure version of the Pilot Road that should give much better wear and grip. A mate fitted one to the rear of the same bike as you have and really liked it.

Please stick around, not everyone here is a dick. You can setup KB to ignore members if you'd prefer not to see their contributions.

[layton]

Thats a good effort!:D Well, atleast it happend closeish to home right? not half way around the island. im running Michelin road 5's on the aprillia at the moment and they seem to have ton's of grip, in fact i cant get them to break traction unless i really give it a fist full! they have a black carbon shoulder for good grip and a harder rubber in the middle to help keep the tyre profile.

one thing i am noticing is they are really wearing out on the shoulders and not in the middle, i can feel the steep with a finger but we will see how they last!

anyhow.. ignore FJ, he sometimes has helpful information but unfortunately sometimes he can post very negative stuff, dont take any notice.

[release_the_bees]

I'm on my second set of Road 5 tyres, and like you said, the outside of the tyre wore out first. In my case, it was the outside of the front that wore out first.

That said, I was very impressed with the performance and the longevity.

Sent from my SM-G930F using Tapatalk

[tanken2]

The reason is ... too many corners. Drive straighter and wear out the centre a bit more. Some tread left there ...

yes try not to lean over , tyres will last longer but trip may take longer too

[AllanB]

I'm on my second set of Road 5 tyres, and like you said, the outside of the tyre wore out first. In my case, it was the outside of the front that wore out first.



I've run various dual compound Michelin tyres on different bikes in the past and each front did this. Implies they could soften up the central rubber slightly.

[rambaldi]

I've run various dual compound Michelin tyres on different bikes in the past and each front did this. Implies they could soften up the central rubber slightly.

Probably influenced by the US market where they have so much straight super-slab that you have to ride through to get to something fun.

[george formby]

Probably influenced by the US market where they have so much straight super-slab that you have to ride through to get to something fun.

Indeed. Some M'erckn forums are entertaining when it comes to tyres. Quite a few stories of tyres de-laminating and chunking. Then you read further to find out they are using cross plys, have ridiculous ideas on pressure or expect 10'000mls out of a tyre, 2 up with luggage on a big bike, riding at warp speed on the interstates.

I guess that's why the dark side is adopted.:crazy:

I used to V my Bridgestone fronts really badly. Turns out it was a consequence of braking into the corners, a habit I had for years, nay, decades.

Must be lot thicker rubber on the front tyre than rear, you can't V a rear. Well, I can't.

[layton]

Indeed. Some M'erckn forums are entertaining when it comes to tyres. Quite a few stories of tyres de-laminating and chunking. Then you read further to find out they are using cross plys, have ridiculous ideas on pressure or expect 10'000mls out of a tyre, 2 up with luggage on a big bike, riding at warp speed on the interstates.

I guess that's why the dark side is adopted.:crazy:

I used to V my Bridgestone fronts really badly. Turns out it was a consequence of braking into the corners, a habit I had for years, nay, decades.

Must be lot thicker rubber on the front tyre than rear, you can't V a rear. Well, I can't.

i seem to be chewing the rear out much faster then the front, but i find my riding style is slower into the corner and early on the gas.. the aprilia is kinda like a tractor, torque everywhere. makes for bad habbits.

[george formby]

i seem to be chewing the rear out much faster then the front, but i find my riding style is slower into the corner and early on the gas.. the aprilia is kinda like a tractor, torque everywhere. makes for bad habbits.

Word of advice. It's frowned upon to chew the rear to fast.:shit:




Rule of thumb is 1 front to 2 rears, so the internuts say. Until recent years I always changed tyres as a pair, sometimes the front was worse than the rear. Brake, brake, gassssssss! You live and learn.

My riding has changed quite a bit and I have a torquey twin, it's not unusual in the summer to get home with iridescent blue sidewalls. I recently put on a new rear with a lot of life left in the front. Dunno if it's the physical effects of age or attained wisdom.

Any tyre discussion in UnZud needs to factor in the coarseness of our roads. Up here we have granite chip seal and volcanic chip seal, some nasty dark brown stuff, like scoria but harder.. Either way, they eat tyres.

Which reminds me. OP, whats your front tyre like? (If you're still partaking..)