Is that dangerous?

Sure is.

Extremely, that tire is going to blow at any moment. Probably the next time they hit a bump at high speed.

Yep, had a car tire look like that once. Blew up on the road not long after.
- Why did you drive it like that? And how did you get it like that?

Only when driving.

If you have to ask, it probably is.

If you're a registered organ donor don't even worry about it bro. It will provide extra grip

Also, metal is much stronger than rubber. So this is actually safer.
- Motorcycle tires don't use steel belts. These are woven cords showing

Yes. Replace your rear tire immediately.

Also, have you considered riding somewhere that isn't straight? You've got no meat in the middle, but you've got nice, fat, juicy chicken strips on the sides.

It's probably due to burnouts.
- The mark observed is from locking up the tire while braking.
  
  Burnout marks would have it evenly worn and ragged margins, discoloration, chunks missing, blistering, or strips of tire missing along the circumference.
- I was thinking the same thing. Either this person didn't replace their tires in a couple of decades or does insane acceleration/turns/burnouts/stunts.
- Nah, you'll get that wear pattern from normal riding, if you don't replace your tires the second you get to the wear bars. I ride a pretty fair amount on a sport bike, and about half of my commute is on interstates. When I was using Pirelli Angel STs, there were no bars that crossed the middle, so it was hard to tell how much tread you had left in the middle until one day you were down to the belt. That happened to me multiple times--Anget STs last about 5000 miles on a CBR600rr--but hasn't happened since I switched to using Dunlops.
How are you making me hungry for bike tire??
Like the Castro or Boystown?

Looks good for at least another couple of hundred yards.

Into the cemetery? Very efficient.

This is actually the secret "ejecto seato" button.

How is this not the most upvoted comment? I just do not understand!

On a more serious note, yes, this is extremely dangerous and the rear tire should be replaced before anyone rides this bike.
It's also the "magical slide with a smell of barbecue" button, but you don't know which it will be. Tis a surprise!!

Very.

Eh slap a little Gorilla Tape on there, it'll be fine.

On an unrelated note, have you considered taking out a life insurance policy on your friend there?

Riding a motorcycle? Extremely.

Get off your high horse not everyone can afford a car.
- I mean they could try that horse you insist the original commenter is sitting on.
- High horses aren’t safe either. The averagest horse is the safest horse.

Tell you friend he has a death wish

Yeah, the owner rides a bike. I think that's like number 1 sign someone has a death wish.

Source: me. I have a death wish.
Ironically this is called a chicken strip.
- Incorrect, a chicken strip is the unused part of the tire closest to the wall. Meaning the rider has been too "chicken" to lean the bike over far enough to use the full tire.

This post is obviously not meant serious.

To the right of the damaged section we can see a thread indicator, so there is maybe around 1 mm thread on the right shoulder. Therefore the centre part was below legal limits.

Before changing tyres, the owner of that bike decided to kill off the old tyre completely by doing a burnout. We can see the flat centre piece all around on the tyre, typical for a burnout.

When changing a motorcycle tire it helps to do a nice burnout before starting. It heats up the tire making it easier to pry off with tire irons.
- Is that true?

Incredibly so. Not only is there basically no traction, the tire will be unbalanced and could vibrate causing loss of control, and it could also catastrophically fail at speed almost certainly causing loss of control.

Don't worry. Your loud pipes will save you.

Very dangerous. You should change it immediately OP

That tire has an elevated risk of spontaneous de-installation.

It's quite dangerous, yes

To shreds you say…

Only if you ride it.

Use both brakes, kiddies.

Welp, may as well do some burnouts since you need a new rear tire anyway.

Nah tis is but a scratch.

Rubber is just the grippy part of the tire. Not super important.

That’s a little too rough for my liking. I would sand it down.

Nah you are good. Tires a solid all the way through, this is just the protective coating.

I had a cop pull me over for a sideways license plate over my tire. He pointed at it and was almost screaming at me for it . Meanwhile my tire looked like that and he didn't notice or didn't care.

it is going to pop soon.

Yes. That’s a piece of gravel from popping

Is this an American asking that question?

expired
- Having worked in ERs...nah. People can be pretty damn dumb sometimes.

That's the threads holding the tire together, they are embedded in the tire for a reason, if you hit those at speed, it could catastrophically fail, as in perforate and blow.

I see a tyre and I want it painted black...

It'll buff out

Yuh

Oh it's fine, that's a perfectly healthy tire. Absolutely not going to get the rider killed. Trust me, I'm a complete stranger on the internet.

Yes.

Well it's a KTM bike, so yes, I'd say it's dangerous

Yes. Replace tire plz.

That Duke needs a shop.

Wish I had a motorcycle to live off.

Yes, definitely. You need new tires. Do not ride like that.

Motorcycling is dangerous, what difference does a chicken strip make. Damn. I’m hungry now. Gonna squid through the drive in! Tell mama if I’m not returning I’m either dead or in jail.

Edit: damn, should I have added the /s ?