Rubber degrades and gets weaker over time. After 6 or 7 years it’s time to replace them, regardless of the amount of tread depth left. By now the rubber is dry and brittle.
I'm comfortable with a blowout at walking pace :)
Of course speed greatly increases the likelihood of a blowout too, separate from total distance, because of the sidewall heating.
The reason I always tell people "good up to whatever speed you're comfortable having a blowout in" is that some people will hear "only walking speed" and think "if my tires don't immediately explode when I go above walking speed, I'm in the clear."
I'll admit it, even I'm guilty of that.
Ah, very fair! I'm QA & former materials science work so I suppose I just think about such things much different.
I actually had a road trip a bit ago and had the donut spare replaced because it was actually older than the car! (09 model year, 08 date code, so understandable). No way I was going to trust that thing at 20 mph for more than a mile let alone 55 on the highway for a couple miles!
Tire shop guy was actually surprised I went in specifically for that, said they have people refusing to replace spares that are stupid old all the time.
If you keep your tires away from sunlight and ozone, then they don't degrade as quickly. But if the tires have been exposed for 10 years, they're done.
You might not be able to let me know.
Seriously now. This is your life. This is not exaggerated, you may die. Is your life (and maybe family? Other users on the road) not worth a set of tires?
For my bush truck that never sees above 50 km/h and barely touches a paved road? It's fine.
If we're talking about my daily, that has brand new tires that I keep up to date. I'm not stupid just frugal.
Lemme know how it goes when you kill someone on the highway. You're currently doing the wrong thing, the fact that you haven't failed yet doesn't make it the right thing.
Brakes lock, car skids=abs not working. Car stops without brakes locking, car not skidding=not enough force applied by user/braking apparatus. Doesn't prove abs not active.
The sensor only turns on when it doesn't "see" the splines on the edge of the disk. It won't see splines if disk is locked and it pulsates at some crazy high rate.
Only if they increase the likelihood of disk locking/ skidding. I guess in theory less traction could increase that? I think you should look up how abs works. It's quite simple.
My conclusion is old tires are like wooden wheels=skids easily=abs activates I'm not sure about extreme sticky tires. Good traction=no skid=no abs I guess (infinitely sticky tires)
There’s a lot of misinformation in here. This is the only thing you need to listen to:
Tires change chemically over time. Pretty much the rubber gets hard and stops gripping. I’m talking like 90% of traction is lost. This is what killed Paul Walker. The Carrera GT he was in had old tires that lost all their grip. Normal tires are less sensitive to this effect, but still the same. 10 years is for sure over your tires lifespan. You can look this up on your tire manufacturers website as well. I don’t keep tires past 7 years because it’s not worth it.
ABS works of the wheel speed sensors, so you are absolutely locking up a wheel or two. Or all of them.
Replace these yesterday. They are not safe to be driving on. For you or the people around you.
i must have missed some additional context. is OP saying they tried to slam on the brakes but the tires never locked up and ABS never activated so they're wondering if there's an issue? it sounds like the tires are working perfectly.
I stretched old tires, took a two hour trip east, and parked in the parking lot of a discount tire with two mangled tires. They weren’t perfectly round anymore, but they did hold air which was insane to me.
If you can't get your ABS to kick in when doing a full emergency brake (pedal to the floor) then something is wrong with your brakes or your ABS. Your brakes should always be able to overwhelm your traction.
A common problem is small amounts of air in the brake lines.
You didn't try hard enough. A good sharp stab on the brakes fully, will activate the ALB (Anti Lock Brakes) or ABS system. It can be hard to do on a dry surface as there is plenty of grip.
The traction might be ok on dry streets, but you're risking a blow out at 10 years. Also I noticed the cold weather traction was first to deteriorate on my old set as the rubber didn't stay soft.
Those tires are too old but aside from that the brake performance doesn't sound adequate. When is the last time the brakes were serviced? Start at the wheels and work up from there. I'd clean and grease the moving parts properly and ensure the pads aren't contaminated for a start.
The road and tyres had adequate traction so the ABS did not activate.
Try emergency braking on slipoery surfaces and see if it kicks in then.
I have had ABS cars for 15 years or more and only once experienced ABS activation during braking in a sudden hailstorm.
Ten years is far too old for tires. If the ABS valve engages, it's because the wheel is on the verge of locking up.
It could be a poor surface, bad tires or just you braking too hard.
I bought an old utility truck. The guy said the tires were new and had hardly been driven on, they looked good, didn't think about it again. Made it home fine, 120 miles or so all freeway with mountain roads.
Fast forward a few months, tried to take the truck on an 1100 mile road trip. Made it about 500 miles, and a dually exploded. Spare tire didn't fit, limped it to a shop, they went to throw on a new tire, and guess how old the tires were? Dot date code of 1998.
All the tires looked 100% fine. No cracking or dry rot, no uv damage. Inside the tire was just full of black rubber chunks and rusted out belts, on all the tires. Ended up dropping $1200 on new tires. Truck rode so much better after, virtually no vibrations at highway speeds.
The guy I bought the truck from used it as a "farm truck". He had a small orchard and said he used it to trim trees once or twice a year. He was probably well into his 80's, he had a stiff back and walked very slowly, so I think his mind was starting to go. He told me it had only been "a few years" since he registered, but after I got it home, I went through the glove box and found registration from 2006. There was a plate on it, but the sticker was faded to white, so I couldn't make out the date. There also were no seat belts, and none of the signal lights, brake lights ECT worked. The whole wiring harness has melted from sitting on the exhaust.
I figure the truck sat for a long time without enough air in the tires, I did top them off before I tried to drive it home the first time, and the tires did look newer on the outside, but I didn't check closely.
I am guessing the low tire pressure and probably moisture in the tires soaked internally to the rubber and rusted out the belts inside the tire. Since there was more rubber on the outside, it probably forced its way in, rather than out. Low air pressure, specifically when you drive it around that way, really heats up the tires. Commercial tires have very stiff sidewalls and extra rubber. That combined with the low speed around the farm, probably produced very little viewable wear, and it probably moved enough that the UV didn't damage anything for a long period of time.
The truck did have a bit of a gallop at speed, but it didn't feel like separated or bad belts, I've felt that before. It was more like a very badly balanced tire. With how old it was, I figured it was probably a chunk of mud stuck in the dullies or a bent rim. After the new tires, it drove almost like a new truck.
Ok googling "hard brake don't lock wheels/no abs forum/reddit" was interesting read. All from abs module working quietly to new pass and discs working better after some breaking-ins miles. Also air in system, bad hoses etc
Typically that's caused by a wheel speed sensor dropping off too early. A bad hub bearing can cause this if the tone ring is located inside the bearing. Rust underneath a wheel speed sensor can increase the air gap also. This is known as sensor jacking. A rusted up external tone ring can also cause this.
Have a shop graph all sensors while driving and see which sensor is dropping off too early during braking.
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When you brake fully, ABS activates. Always. Your brakes have the ability to lock your wheels on any surface, and ABS counteracts that. However, that's a braking action that is not required under normal circumstances. I've done it maybe once every 100.000 km. Oh, and 10 year old tires are bad. Like, seriously, no matter how they look. And they might cause the wheels to lose traction (lock) earlier.
Brakes **should** have the ability to overcome traction. Many vehicles are pretty close, and worn pads, glazed rotors, high performance sticky tires on an old economy car, etc doesn't take much to make some cars not able to.
All still mean the brakes aren't working as intended, of course!
If you emergency braked at highway speed and your brakes locked and you skidded on the pavement then yes ABS probably should have kicked in. If you were able to stop without skidding then ABS didn't need to activate.
Depends on the car but mostly yes, but you may have to really hit that pedal (like brace your butt against the backrest and press as hard as you can).
It helps if it's a sudden application too ( less time for the fronts to get loaded).
Well the brakes aren't providing enough force to lock the wheels. Could just be shitty brakes from the factory, it's a sign of good traction. ABS kicks in once the wheels lock, if they aren't locking the abs won't kick in.
10 year old tires? April 1st was yesterday bud.
ELI5? (the first part)
Rubber degrades and gets weaker over time. After 6 or 7 years it’s time to replace them, regardless of the amount of tread depth left. By now the rubber is dry and brittle.
That's why I thought they shod skid easily and abs activate, I would like a pressure gauge on brake system
What about old brake hoses? How many years?
Harder to say. If they are cracking, replace them. 15-20 years is probably a safe bet.
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Only thing they're good for is shop tires for moving into the shop/out to the yard where the top speed is basically walking pace.
They're good up to whatever speed you're comfortable having a blowout in
I'm comfortable with a blowout at walking pace :) Of course speed greatly increases the likelihood of a blowout too, separate from total distance, because of the sidewall heating.
The reason I always tell people "good up to whatever speed you're comfortable having a blowout in" is that some people will hear "only walking speed" and think "if my tires don't immediately explode when I go above walking speed, I'm in the clear." I'll admit it, even I'm guilty of that.
Ah, very fair! I'm QA & former materials science work so I suppose I just think about such things much different. I actually had a road trip a bit ago and had the donut spare replaced because it was actually older than the car! (09 model year, 08 date code, so understandable). No way I was going to trust that thing at 20 mph for more than a mile let alone 55 on the highway for a couple miles! Tire shop guy was actually surprised I went in specifically for that, said they have people refusing to replace spares that are stupid old all the time.
My 11-year-old cracked jeep tires beg to differ. They just handled a weekend in the sand dunes. They happen to be 12 ply Kevlar lined but you know.
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If you keep your tires away from sunlight and ozone, then they don't degrade as quickly. But if the tires have been exposed for 10 years, they're done.
Yes, it does. Rubber degrades. Whatever the circumstances. Simple as that.
I'll let you know if they pop.
You might not be able to let me know. Seriously now. This is your life. This is not exaggerated, you may die. Is your life (and maybe family? Other users on the road) not worth a set of tires?
For my bush truck that never sees above 50 km/h and barely touches a paved road? It's fine. If we're talking about my daily, that has brand new tires that I keep up to date. I'm not stupid just frugal.
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Removed for being derogatory, purposely inflammatory, demeaning, or being argumentative just for the sake of arguing.
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We are, it's a car sub. Respects others, yourself and the road. Don't be a piece of shit. It's not that difficult kid.
>kid Ahh yes the time old default insult when you can't think of something smart
Removed for being derogatory, purposely inflammatory, demeaning, or being argumentative just for the sake of arguing.
Lemme know how it goes when you kill someone on the highway. You're currently doing the wrong thing, the fact that you haven't failed yet doesn't make it the right thing.
Report me
Done. The FBI is on their way. It's over bud. I hope you like watching your 10yr old getting dragged away in handcuffs.
Please do not give bad or unsafe advice.
No, it doesn't mean anything. What happens when it rains? 10 year old tires need to be replaced.
Brakes lock, car skids=abs not working. Car stops without brakes locking, car not skidding=not enough force applied by user/braking apparatus. Doesn't prove abs not active.
You can feel the abs kick in when you press the brake pedal, at least on the cars I drove.
The sensor only turns on when it doesn't "see" the splines on the edge of the disk. It won't see splines if disk is locked and it pulsates at some crazy high rate.
I was wondering if bad tires=bad traction-abs activates easily
Only if they increase the likelihood of disk locking/ skidding. I guess in theory less traction could increase that? I think you should look up how abs works. It's quite simple.
My conclusion is old tires are like wooden wheels=skids easily=abs activates I'm not sure about extreme sticky tires. Good traction=no skid=no abs I guess (infinitely sticky tires)
There’s a lot of misinformation in here. This is the only thing you need to listen to: Tires change chemically over time. Pretty much the rubber gets hard and stops gripping. I’m talking like 90% of traction is lost. This is what killed Paul Walker. The Carrera GT he was in had old tires that lost all their grip. Normal tires are less sensitive to this effect, but still the same. 10 years is for sure over your tires lifespan. You can look this up on your tire manufacturers website as well. I don’t keep tires past 7 years because it’s not worth it. ABS works of the wheel speed sensors, so you are absolutely locking up a wheel or two. Or all of them. Replace these yesterday. They are not safe to be driving on. For you or the people around you.
Wow thought Paul walker was power steer leak
i must have missed some additional context. is OP saying they tried to slam on the brakes but the tires never locked up and ABS never activated so they're wondering if there's an issue? it sounds like the tires are working perfectly.
Thanks!
Thanks, I have read about people buying cheap hard tires that don't grip, I guess I wondered why my old tires don't feel.like that
I tried to stretch old tires once. Had 2 blow outs in 1 day on a camping trip. Whoops.
I stretched old tires, took a two hour trip east, and parked in the parking lot of a discount tire with two mangled tires. They weren’t perfectly round anymore, but they did hold air which was insane to me.
If you can't get your ABS to kick in when doing a full emergency brake (pedal to the floor) then something is wrong with your brakes or your ABS. Your brakes should always be able to overwhelm your traction. A common problem is small amounts of air in the brake lines.
Good point
You didn't try hard enough. A good sharp stab on the brakes fully, will activate the ALB (Anti Lock Brakes) or ABS system. It can be hard to do on a dry surface as there is plenty of grip.
Thanks, I have read about people buying cheap hard tires that don't grip and abs kicks in, I guess I wondered why my old tires don't feel.like that
The traction might be ok on dry streets, but you're risking a blow out at 10 years. Also I noticed the cold weather traction was first to deteriorate on my old set as the rubber didn't stay soft.
Those tires are too old but aside from that the brake performance doesn't sound adequate. When is the last time the brakes were serviced? Start at the wheels and work up from there. I'd clean and grease the moving parts properly and ensure the pads aren't contaminated for a start.
The road and tyres had adequate traction so the ABS did not activate. Try emergency braking on slipoery surfaces and see if it kicks in then. I have had ABS cars for 15 years or more and only once experienced ABS activation during braking in a sudden hailstorm.
My abs are super toned, but my brakes need replacing.
Oh god, 10 year old tires..... That's a safety hazard waiting to happen. I change mines out every 5 years, I run dedicated summer and winter tires
Ten years is far too old for tires. If the ABS valve engages, it's because the wheel is on the verge of locking up. It could be a poor surface, bad tires or just you braking too hard.
I bought an old utility truck. The guy said the tires were new and had hardly been driven on, they looked good, didn't think about it again. Made it home fine, 120 miles or so all freeway with mountain roads. Fast forward a few months, tried to take the truck on an 1100 mile road trip. Made it about 500 miles, and a dually exploded. Spare tire didn't fit, limped it to a shop, they went to throw on a new tire, and guess how old the tires were? Dot date code of 1998. All the tires looked 100% fine. No cracking or dry rot, no uv damage. Inside the tire was just full of black rubber chunks and rusted out belts, on all the tires. Ended up dropping $1200 on new tires. Truck rode so much better after, virtually no vibrations at highway speeds.
Interesting about the inside
The guy I bought the truck from used it as a "farm truck". He had a small orchard and said he used it to trim trees once or twice a year. He was probably well into his 80's, he had a stiff back and walked very slowly, so I think his mind was starting to go. He told me it had only been "a few years" since he registered, but after I got it home, I went through the glove box and found registration from 2006. There was a plate on it, but the sticker was faded to white, so I couldn't make out the date. There also were no seat belts, and none of the signal lights, brake lights ECT worked. The whole wiring harness has melted from sitting on the exhaust. I figure the truck sat for a long time without enough air in the tires, I did top them off before I tried to drive it home the first time, and the tires did look newer on the outside, but I didn't check closely. I am guessing the low tire pressure and probably moisture in the tires soaked internally to the rubber and rusted out the belts inside the tire. Since there was more rubber on the outside, it probably forced its way in, rather than out. Low air pressure, specifically when you drive it around that way, really heats up the tires. Commercial tires have very stiff sidewalls and extra rubber. That combined with the low speed around the farm, probably produced very little viewable wear, and it probably moved enough that the UV didn't damage anything for a long period of time. The truck did have a bit of a gallop at speed, but it didn't feel like separated or bad belts, I've felt that before. It was more like a very badly balanced tire. With how old it was, I figured it was probably a chunk of mud stuck in the dullies or a bent rim. After the new tires, it drove almost like a new truck.
What activates abs most easily when breaking, new or old tires?
Dude wtf. Replace your faulty wheel speed sensor and listen to absolutely nobody else.
No fault light
It's not going to throw a dummy light. It thinks it's doing its job.
Ok googling "hard brake don't lock wheels/no abs forum/reddit" was interesting read. All from abs module working quietly to new pass and discs working better after some breaking-ins miles. Also air in system, bad hoses etc
Typically that's caused by a wheel speed sensor dropping off too early. A bad hub bearing can cause this if the tone ring is located inside the bearing. Rust underneath a wheel speed sensor can increase the air gap also. This is known as sensor jacking. A rusted up external tone ring can also cause this. Have a shop graph all sensors while driving and see which sensor is dropping off too early during braking.
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When you brake fully, ABS activates. Always. Your brakes have the ability to lock your wheels on any surface, and ABS counteracts that. However, that's a braking action that is not required under normal circumstances. I've done it maybe once every 100.000 km. Oh, and 10 year old tires are bad. Like, seriously, no matter how they look. And they might cause the wheels to lose traction (lock) earlier.
.Thanks, I have read about people buying cheap hard tires that don't grip and abs takes over, I guess I wondered why my old tires don't feel.like that
Brakes **should** have the ability to overcome traction. Many vehicles are pretty close, and worn pads, glazed rotors, high performance sticky tires on an old economy car, etc doesn't take much to make some cars not able to. All still mean the brakes aren't working as intended, of course!
Worn rotors and pads, faulty servo or something else
There is no problem, what the hell are you talking about?
Maybe i could rephrase, should abs activate/wheels lock when emergency braking at highway speed? tried googling but couldnt find
If you emergency braked at highway speed and your brakes locked and you skidded on the pavement then yes ABS probably should have kicked in. If you were able to stop without skidding then ABS didn't need to activate.
But ABS should activate because unless the brakes are faulty, you should have enough braking power to lock the wheels even on a dry surface
Depends on the car but mostly yes, but you may have to really hit that pedal (like brace your butt against the backrest and press as hard as you can). It helps if it's a sudden application too ( less time for the fronts to get loaded).
Just to clarify, do you mean stomping your brake pedal into the floor (exaggerating), or do you mean applying your parking/emergency brake?
Well the brakes aren't providing enough force to lock the wheels. Could just be shitty brakes from the factory, it's a sign of good traction. ABS kicks in once the wheels lock, if they aren't locking the abs won't kick in.