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Old 04-12-2021, 03:44 PM   #31 (permalink)
JSH
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Quote:
Originally Posted by cRiPpLe_rOoStEr View Post
Worse than retreadings are the regroovings I often see in Brazil.
I used to work with a guy that previously worked for Michelin for more than a decade working on commercial tires. According to him a commercial tire can be used 9 times:

1. The original tread
2. Face on a lathe and groove
3. Face on a lathe and groove
4. 1st Retread
5. Face on a lathe and groove
6. Face on a lathe and groove
7. 2nd Retread
8. Face on a lathe and groove
9. Face on a lathe and groove

For each regroove or retread a mark is burned on the side of the tire. According to him retreads aren't a problem if they are done right. They fail for the same reason that original tires fail - overheating due to underinflation.

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Old 04-12-2021, 04:01 PM   #32 (permalink)
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Quote:
Originally Posted by JSH View Post
I used to work with a guy that previously worked for Michelin for more than a decade working on commercial tires. According to him a commercial tire can be used 9 times:

1. The original tread
2. Face on a lathe and groove
3. Face on a lathe and groove
4. 1st Retread
5. Face on a lathe and groove
6. Face on a lathe and groove
7. 2nd Retread
8. Face on a lathe and groove
9. Face on a lathe and groove

For each regroove or retread a mark is burned on the side of the tire. According to him retreads aren't a problem if they are done right. They fail for the same reason that original tires fail - overheating due to underinflation.
Except prime tires don't puke up their tread when they overheat...

Seems dangerous and common enough that retreads come apart that there should be pressure and temperature monitoring on them. Makes no sense to have pressure monitoring on passenger cars because they only have 4 wheels, and it's plainly obvious when the tires are dangerously low due to handling differences.

Just yesterday a guy had pulled halfway onto the shoulder and stopped on a country road (55 MPH limit). I was angry that he was backing up traffic and creating a dangerous situation, but then realized he was pulling half a tire carcass off the road, which if hit, would have caused major damage for most passenger cars.
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Old 04-12-2021, 06:54 PM   #33 (permalink)
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Quote:
Originally Posted by redpoint5 View Post
Except prime tires don't puke up their tread when they overheat...
They still come apart - just in smaller pieces.



Quote:
Originally Posted by redpoint5 View Post
Seems dangerous and common enough that retreads come apart that there should be pressure and temperature monitoring on them. Makes no sense to have pressure monitoring on passenger cars because they only have 4 wheels, and it's plainly obvious when the tires are dangerously low due to handling differences.
The EU agrees with you. TPMS will be mandatory for commercial vehicles in 2022.

There is nothing on the horizon here in the USA but TPMS systems are a pretty common option for large fleets. Tires are expensive - TPMS is cheap. Even aftermarket TPMS is only about $1000. Having a service truck come out to change a one tire on the side of the road can cost that much.

ATIS is also popular (Automatic Tire Inflation System). ATIS has the advantage because slow leaks are continually topped off by the truck's air system so you have longer to make it to a service center for the tire to be fixed.

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Old 04-12-2021, 08:35 PM   #34 (permalink)
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ATIS is quite widespread in Brazil for heavy-duty commercial vehicles, yet it's often fitted in a different way with some pipes hanging more visibly on the outside. It's easier to notice on the front axles of the trucks in these pictures.




Quote:
Originally Posted by JSH View Post
I used to work with a guy that previously worked for Michelin for more than a decade working on commercial tires. According to him a commercial tire can be used 9 times:

1. The original tread
2. Face on a lathe and groove
3. Face on a lathe and groove
4. 1st Retread
5. Face on a lathe and groove
6. Face on a lathe and groove
7. 2nd Retread
8. Face on a lathe and groove
9. Face on a lathe and groove
But these tyres are regroovable as a design feature, while for tyres meant to light-duty vehicles it's not the case. Yet it's quite a common practice. A friend who opened a tyre shop after we finished high-school told me it was widely sought after.


Quote:
For each regroove or retread a mark is burned on the side of the tire.
I'm sure most tyre repairers in my country "forget" this procedure.
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Old 04-12-2021, 10:22 PM   #35 (permalink)
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Quote:
Originally Posted by JSH View Post
ATIS is also popular (Automatic Tire Inflation System). ATIS has the advantage because slow leaks are continually topped off by the truck's air system so you have longer to make it to a service center for the tire to be fixed.

Hey guys! Have I ever told you about the M1083?! It has something like that!

Remember my thread about how long it would take to replace my heater core? I mentioned it should have been called "How long will it take me to start?"

I completed it, but needed to redo it, and I don't even know how long it has been.

I keep working on other projects.

Until I got a girlfriend in the Phoenix area I bought gas every two months. My MPG is lower than ever (barely above the EPA estimate for mixed driving), but I have never spent less!

The guy who sold me the Civic bragged that he got 13 MPG. So, there are those idiots, but humans can become accustomed to almost anything, including paying far too much gas money.

Metro, you aren't offended that RedPoint protests dependence on Canadian oil?

I hear that he has a vendetta against maple syrup, too!

Oh yeah...
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The point?
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Old 04-12-2021, 11:01 PM   #36 (permalink)
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CTIS has been a military option since the 1970’s
Used to be standard on old split rims right alongside LH/RH directional lug nuts.

Works well on the 16r20 and 20r20 MXV Supersingles


There is also central lube grease options, good lord are those irritating to setup.
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Old 04-12-2021, 11:16 PM   #37 (permalink)
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Was that on Caterpillar's M520 Goer?
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Old 04-13-2021, 12:51 AM   #38 (permalink)
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Quote:
Quote:
Originally Posted by Frank Lee
Using a proven liar to make a point- what am I missing here?
The point?
Are you saying I was wrong to ask the question, or do you just like reposting redneck's memery?

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