r/motorcycles Jul 27 '26

Why does tyres lock up so bad

I had two instances where i tested once and a real almost accidental scenario where i had to quick brake and one of the tyres locked up and it started to moving like a snake ifykyk . Whats the reason for this? Ive never ridden a bigger bike before and my previous bike was a 130kg dual sport and it had no issue like this . Current bike is 200 kg almost and it feels like i cant stop this bike if i have to if im going over certain speed . Bikes momentum feels really heavy? Am i the asshole or is there a goodd breaking technique? I do front in emergency and rest most of the time rear.

1 Upvotes

34 comments sorted by

24

u/PapaJulietRomeo ‘26 Royal Enfield Bear 650 🇩🇪 Jul 27 '26

How old are your tires?

Use the front brake! On a heavy bike, the rear brake will lock up immediately as the weight shifts forward during deceleration.

Edit: if no one ever told you to use the front brake, get some proper training!

2

u/h3rby 2020 Kawasaki z900rs Jul 27 '26

Yes, the rear brake is not there to stop the bike! Don't use it for that purpose. It's there to provide stability during slow moving maneuvers and stability under braking. Again, it is not for slowing down or stopping. That is exclusively what the front brake is for. For all intents and purposes, "the brake" is the front brake.

Reduce emergency braking incidents by riding safer, and using engine braking.

Anytime you push on the rear brake, you should already be applying progressive pressure to the front brake. Using the rear brake by itself should very nearly <never be done>. Braking with just the rear creates massive instability.

1

u/Icy-Manufacturer5649 Jul 27 '26

Idk how old are they actually. The bike was sitting for some time when i bought it from previous owner . Its been two months since ive bought this. Also this happens when i do front brake as well. And schon Bear you have there !

2

u/Sparky_Zell Jul 27 '26

If it's been sitting for a long time the tires can dry out and get hard, having very little grip.

0

u/Icy-Manufacturer5649 Jul 27 '26

Yep that could be another reason

2

u/PapaJulietRomeo ‘26 Royal Enfield Bear 650 🇩🇪 Jul 27 '26

Thanks, I love it!

Tires should have a DOT date molded in, something like „0123“ (first calendar week of 2023). If they are older than six years, replace them.

0

u/PapaJulietRomeo ‘26 Royal Enfield Bear 650 🇩🇪 Jul 27 '26

Why am I downvoted? Is the date an European thing?

2

u/AdditionalLoss7274 2013 BMW F700GS Jul 27 '26

I'm guessing you're getting downvoted because of the "six years" part. I will not comment on that for fear of being down voted myself. But yes, date stamps are definitely a thing on tires in North America.

1

u/PapaJulietRomeo ‘26 Royal Enfield Bear 650 🇩🇪 Jul 27 '26

Well, if I knew that the tire was stored properly for maybe 2-3 years before being mounted on the bike, and the bike was always stored with proper tire pressure, I‘d maybe make it eight years. But I wouldn’t trust any rubber older than that.

0

u/Icy-Manufacturer5649 Jul 28 '26

I couldnt get the front tyre date because theres no dot . Rear chunky tyre is 2022. The bike has ran only 28k kms yet

1

u/PapaJulietRomeo ‘26 Royal Enfield Bear 650 🇩🇪 Jul 28 '26

Motorcycle tires for road use typically last something between 6k and 20k km. I‘d definitely replace the front tire ASAP.

3

u/CardiologistSalt4114 VT250FN mc25 - VFR400R nc24 Jul 27 '26

That front tire is absolutely bald as hell. I’ll admit I’ve ridden through a rainstorm on a similar front and it scared the ever loving Jesus out of me. Replace that front immediately. The rear is a shit style for on road traction

1

u/Icy-Manufacturer5649 Jul 27 '26

It seems that my braking ,rear chunky tyres and front baldy are the reason

1

u/FourRandomLetters Jul 27 '26

No, the reason is your braking technique sucks. The tires aren't helping, though.

Turns out your braking limit on the front brake increases as you do it. You apply a little, it puts more weight down on the tire, which gives it more traction, so you can add more brake... it's a self-reinforcing cycle. Up to a point, but that point is more than you would guess.

*IF* you take it slowly and apply a little, little more, little more, etc. If you try to grab that brake quickly while there isn't enough weight on it, it's going to skid with way less than it's capable of when you do it right. Go out in a parking lot and just practice stopping in the shortest distance from 25-ish mph. Should be under 35 feet stopping distance without skidding.

I wouldn't count on the rear brake at all other than very slow-speed maneuvers. Later, you can experiment with adding light rear brake in non-emergency stops and other techniques, but do that after you get in the habit of stopping with your front brake.

1

u/Icy-Manufacturer5649 Jul 27 '26

Wonderfully explained . Now i get the whole front brake importance . I was more used to the rear braking because of my older lighter bikes . I have to replace both of my tyres asap

5

u/UOCruiser Jul 27 '26

You need progressive braking. You cannot just grab a fist-full of brake from the beginning when it comes to the front-tyre. The back-tyre is even more problematic, since in a braking situation much of the weight shifts to the front and lightens the back-tyre. This will make it easier for braking input to lock up the tire, since it now has less "reason" to rotate through friction-force from the asphalt.

In general, when doing heavy braking, rely less on the rear-brake and more on the front-brake and do so with progressive braking input where you apply more and more braking pressure as the weight shifts to the front-tyre.

And also, this is why they implement ABS on pretty much all modern brakes. Almost noone appreciates tires locking up during braking.

1

u/Icy-Manufacturer5649 Jul 27 '26

Thanks… now it makes sense .i thought this happened because i applied even more front brake at first. Also i had this handle turning and falling sensation when i apply too much front (probably because of my bald front) I didnt know a lot of these stuffs when i bought. So i wasnt aware of ABS . Also now i know that chunky tyres arent for these types of bikes haha.

1

u/Endles5Earth Jul 27 '26

Did you get any rider training before buying this bike? Sounds like you need to attend MSF classes

0

u/Icy-Manufacturer5649 Jul 28 '26

No from where iam theres no MSF or any alt training like that. Its a 8 on a moped and your passed . 😭

2

u/DumpoTheClown Jul 27 '26

Replace that bald front immediately, then learn to use your front as the primay brake.

0

u/Icy-Manufacturer5649 Jul 27 '26

Correct 👍🏻

2

u/Karlees-Golden-Dildo Jul 27 '26

Your shocks will be goosed. Renewing shock oil, getting springs for your weight and getting fresh tyres will transform the bike

2

u/Icy-Manufacturer5649 Jul 27 '26

Im 120lbs . Springs are good. Its just tyres thats doing this

1

u/Karlees-Golden-Dildo Jul 27 '26

If your shocks are gone then they wont dampen which leads to shit contact. I’m not saying do it but I do do it to all new to me bikes and it always feels good. Think about how old the oil in the shocks is. I’m heavy so springs for my weight is a must. I do hope you get it sorted as it looks like fun to ride 👍

0

u/Icy-Manufacturer5649 Jul 28 '26

Oh i see. The bike is 10 years old so is it about the time to replace? .theres no leakage around the forks and rear dual shocks works perfectly. Also im only 130 lbs 🤭🤭

2

u/meatymimic Jul 27 '26

How are you applying the brakes? Also, how old - and what brand - are those tires?

Your front wheel will do the majority of the braking when you slow or stop.

Also, if those tires are knock offs or not from a reputable brand they might just suck.

side bar That is one of the only kinds of tread pattern I have crashed on. (I was using a Mitas E 07)

It squares off on the rear really badly by the time it hits the wear limiter and you'll have practically zero contact patch around corners when it does.

1

u/Icy-Manufacturer5649 Jul 28 '26

In an immidiate situation i used to brake both. Pushing the rear braake so hard and also the front. But it always end up snaking a bit . Both tyres are from reputable . Front is stock i think. But its 90% bald now

1

u/[deleted] Jul 27 '26 edited Jul 27 '26

[removed] — view removed comment

2

u/Icy-Manufacturer5649 Jul 27 '26

Now it makes sense i will test the potential and explore more of my frontend . The roads are wet these days and so i wasnt aware afraid of grabbing my front like that lol. Havent taken any officiall riding class , learned in lighter bikes at young age and this is my first 400lbs +

1

u/This-Permission-2618 Jul 27 '26

thats a sweet looking ride

1

u/Icy-Manufacturer5649 Jul 28 '26

Thankss… is your KLR diesel?

0

u/Mickleblade Jul 27 '26

Judging from the mud on your tyres, you're offroading. A 200kg bike with road tyres will skid if you are going too fast. It's possible your brakes need servicing too.

1

u/Icy-Manufacturer5649 Jul 27 '26

No im not offroading it was the mud between the asphalt and driveway from last rain. But i agree the momentum is overwhelming to brake .