what is "ply"?
Guest
Posts: n/a
Joshua Nelson did pass the time by typing:
> Doing tire research, I looked back through the google archives. There
> is a lot of talk about Thornbirds being 2-ply, some tires being
> bias-ply, others being other kinds of "ply." I am not familiar with
> this term... could someone tell me briefly what it means?
A fly with a speach impediment.
:)
Number of layers in the sidewall.
The more plies the stiffer the tire.
--
DougW
ramjw resident wiseass.
> Doing tire research, I looked back through the google archives. There
> is a lot of talk about Thornbirds being 2-ply, some tires being
> bias-ply, others being other kinds of "ply." I am not familiar with
> this term... could someone tell me briefly what it means?
A fly with a speach impediment.
:)
Number of layers in the sidewall.
The more plies the stiffer the tire.
--
DougW
ramjw resident wiseass.
Guest
Posts: n/a
Joshua Nelson did pass the time by typing:
> Doing tire research, I looked back through the google archives. There
> is a lot of talk about Thornbirds being 2-ply, some tires being
> bias-ply, others being other kinds of "ply." I am not familiar with
> this term... could someone tell me briefly what it means?
A fly with a speach impediment.
:)
Number of layers in the sidewall.
The more plies the stiffer the tire.
--
DougW
ramjw resident wiseass.
> Doing tire research, I looked back through the google archives. There
> is a lot of talk about Thornbirds being 2-ply, some tires being
> bias-ply, others being other kinds of "ply." I am not familiar with
> this term... could someone tell me briefly what it means?
A fly with a speach impediment.
:)
Number of layers in the sidewall.
The more plies the stiffer the tire.
--
DougW
ramjw resident wiseass.
Guest
Posts: n/a
Joshua Nelson did pass the time by typing:
> Doing tire research, I looked back through the google archives. There
> is a lot of talk about Thornbirds being 2-ply, some tires being
> bias-ply, others being other kinds of "ply." I am not familiar with
> this term... could someone tell me briefly what it means?
A fly with a speach impediment.
:)
Number of layers in the sidewall.
The more plies the stiffer the tire.
--
DougW
ramjw resident wiseass.
> Doing tire research, I looked back through the google archives. There
> is a lot of talk about Thornbirds being 2-ply, some tires being
> bias-ply, others being other kinds of "ply." I am not familiar with
> this term... could someone tell me briefly what it means?
A fly with a speach impediment.
:)
Number of layers in the sidewall.
The more plies the stiffer the tire.
--
DougW
ramjw resident wiseass.
Guest
Posts: n/a
and for the sake of completeness only, older tyres which have layers going
round the circumference were called crossplies.
Dave Milne, Scotland
'99 TJ 4.0 Sahara
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:3F83349D.F7B07C33@sympatico.ca...
: The 'plies' are the layers or belts that are inside the tires.
:
: A heavy duty truck tire can be 8 'ply' which means there are 8 different
: layers of belts in the sidewalls.
:
: A Thornbird you say only has 2 plies.
:
: The cheap BFG second line of mud tires, the Mud King's, only have 2
: sidewall plies, real BFG muds have 3 sidewall plies.
:
: This makes the sidewall much stronger and much more resistant to pinches
: or perforations. It also makes it less flexible under full air
: pressure.
:
: So a 2 ply tire will lean into turns and dive the front end down way
: more than a 3 ply sidewall or 8 ply one will do on the street.
:
: Some tires will also list X number of plies for the tread and X # of
: plies for the sidewall.
:
: Bias ply means the belts go sideways at something like 20-45 deg across
: the tire alternating zig zag front to back where radial plies go
: straight across in a 90 deg to the rim or in line with the tire
: 'radius'.
:
: Radial tires flex way more and couldn't work until technology improved
: back in the 70's I think it was.
:
: That is why bias ply tires should be rotated in a cross pattern, because
: the belts go both ways, so the best wear is had my making them turn the
: opposite way by flipping them side to side.
:
: A steel belted radial will 'break in' the belts in the rotation they
: were installed in and can and 'will' blow a belt if crossed in a
: rotation so they spin the opposite direction.
:
: 'Modern' radials are 'supposed' to be able to be cross rotated according
: to the tire makers, the same folks that want to sell you new ones
: remember, eh....
:
: Meanwhile, 'both' of my original Jeep owners manuals state point blank
: to only rotate the tires front to back with radials, if you want to
: rotate the spare in, it goes on the right rear, because the right rear
: is the highest wear tire. It is the default power wheel for a stock
: open diff. Dump the clutch and the right rear is always the one to
: spin. The right front goes to the spare, then back to the right rear on
: the next rotation. The left side only ever rotates front to back.
:
: That is the main reason I only have a used BFG AT as a spare for my BFG
: mud tires. As a spare, I am only going to use it to get to a place to
: fix my 'expensive' tire so I don't give a ---- what side it has to go on
: if I get a flat and it blows a belt as a spare. I can get another for
: the cost of mounting it.
:
: I just tossed 10 tires out of my garage, all with good tread and belts
: that had let go. I bought the tires used from the scrap yard cheap with
: the 50/50 factor if I could guess which way they were previously
: installed.
:
: I bought my Cherokee in 99 with 'modern' radial tires on it that were
: cross rotated, and one blew a belt out. They were Hercules 'Terra Trac'
: tires.
:
: Mike
: 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
: 88 Cherokee 235 BFG AT's
:
: Joshua Nelson wrote:
: >
: > Doing tire research, I looked back through the google archives. There
: > is a lot of talk about Thornbirds being 2-ply, some tires being
: > bias-ply, others being other kinds of "ply." I am not familiar with
: > this term... could someone tell me briefly what it means?
round the circumference were called crossplies.
Dave Milne, Scotland
'99 TJ 4.0 Sahara
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:3F83349D.F7B07C33@sympatico.ca...
: The 'plies' are the layers or belts that are inside the tires.
:
: A heavy duty truck tire can be 8 'ply' which means there are 8 different
: layers of belts in the sidewalls.
:
: A Thornbird you say only has 2 plies.
:
: The cheap BFG second line of mud tires, the Mud King's, only have 2
: sidewall plies, real BFG muds have 3 sidewall plies.
:
: This makes the sidewall much stronger and much more resistant to pinches
: or perforations. It also makes it less flexible under full air
: pressure.
:
: So a 2 ply tire will lean into turns and dive the front end down way
: more than a 3 ply sidewall or 8 ply one will do on the street.
:
: Some tires will also list X number of plies for the tread and X # of
: plies for the sidewall.
:
: Bias ply means the belts go sideways at something like 20-45 deg across
: the tire alternating zig zag front to back where radial plies go
: straight across in a 90 deg to the rim or in line with the tire
: 'radius'.
:
: Radial tires flex way more and couldn't work until technology improved
: back in the 70's I think it was.
:
: That is why bias ply tires should be rotated in a cross pattern, because
: the belts go both ways, so the best wear is had my making them turn the
: opposite way by flipping them side to side.
:
: A steel belted radial will 'break in' the belts in the rotation they
: were installed in and can and 'will' blow a belt if crossed in a
: rotation so they spin the opposite direction.
:
: 'Modern' radials are 'supposed' to be able to be cross rotated according
: to the tire makers, the same folks that want to sell you new ones
: remember, eh....
:
: Meanwhile, 'both' of my original Jeep owners manuals state point blank
: to only rotate the tires front to back with radials, if you want to
: rotate the spare in, it goes on the right rear, because the right rear
: is the highest wear tire. It is the default power wheel for a stock
: open diff. Dump the clutch and the right rear is always the one to
: spin. The right front goes to the spare, then back to the right rear on
: the next rotation. The left side only ever rotates front to back.
:
: That is the main reason I only have a used BFG AT as a spare for my BFG
: mud tires. As a spare, I am only going to use it to get to a place to
: fix my 'expensive' tire so I don't give a ---- what side it has to go on
: if I get a flat and it blows a belt as a spare. I can get another for
: the cost of mounting it.
:
: I just tossed 10 tires out of my garage, all with good tread and belts
: that had let go. I bought the tires used from the scrap yard cheap with
: the 50/50 factor if I could guess which way they were previously
: installed.
:
: I bought my Cherokee in 99 with 'modern' radial tires on it that were
: cross rotated, and one blew a belt out. They were Hercules 'Terra Trac'
: tires.
:
: Mike
: 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
: 88 Cherokee 235 BFG AT's
:
: Joshua Nelson wrote:
: >
: > Doing tire research, I looked back through the google archives. There
: > is a lot of talk about Thornbirds being 2-ply, some tires being
: > bias-ply, others being other kinds of "ply." I am not familiar with
: > this term... could someone tell me briefly what it means?
Guest
Posts: n/a
and for the sake of completeness only, older tyres which have layers going
round the circumference were called crossplies.
Dave Milne, Scotland
'99 TJ 4.0 Sahara
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:3F83349D.F7B07C33@sympatico.ca...
: The 'plies' are the layers or belts that are inside the tires.
:
: A heavy duty truck tire can be 8 'ply' which means there are 8 different
: layers of belts in the sidewalls.
:
: A Thornbird you say only has 2 plies.
:
: The cheap BFG second line of mud tires, the Mud King's, only have 2
: sidewall plies, real BFG muds have 3 sidewall plies.
:
: This makes the sidewall much stronger and much more resistant to pinches
: or perforations. It also makes it less flexible under full air
: pressure.
:
: So a 2 ply tire will lean into turns and dive the front end down way
: more than a 3 ply sidewall or 8 ply one will do on the street.
:
: Some tires will also list X number of plies for the tread and X # of
: plies for the sidewall.
:
: Bias ply means the belts go sideways at something like 20-45 deg across
: the tire alternating zig zag front to back where radial plies go
: straight across in a 90 deg to the rim or in line with the tire
: 'radius'.
:
: Radial tires flex way more and couldn't work until technology improved
: back in the 70's I think it was.
:
: That is why bias ply tires should be rotated in a cross pattern, because
: the belts go both ways, so the best wear is had my making them turn the
: opposite way by flipping them side to side.
:
: A steel belted radial will 'break in' the belts in the rotation they
: were installed in and can and 'will' blow a belt if crossed in a
: rotation so they spin the opposite direction.
:
: 'Modern' radials are 'supposed' to be able to be cross rotated according
: to the tire makers, the same folks that want to sell you new ones
: remember, eh....
:
: Meanwhile, 'both' of my original Jeep owners manuals state point blank
: to only rotate the tires front to back with radials, if you want to
: rotate the spare in, it goes on the right rear, because the right rear
: is the highest wear tire. It is the default power wheel for a stock
: open diff. Dump the clutch and the right rear is always the one to
: spin. The right front goes to the spare, then back to the right rear on
: the next rotation. The left side only ever rotates front to back.
:
: That is the main reason I only have a used BFG AT as a spare for my BFG
: mud tires. As a spare, I am only going to use it to get to a place to
: fix my 'expensive' tire so I don't give a ---- what side it has to go on
: if I get a flat and it blows a belt as a spare. I can get another for
: the cost of mounting it.
:
: I just tossed 10 tires out of my garage, all with good tread and belts
: that had let go. I bought the tires used from the scrap yard cheap with
: the 50/50 factor if I could guess which way they were previously
: installed.
:
: I bought my Cherokee in 99 with 'modern' radial tires on it that were
: cross rotated, and one blew a belt out. They were Hercules 'Terra Trac'
: tires.
:
: Mike
: 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
: 88 Cherokee 235 BFG AT's
:
: Joshua Nelson wrote:
: >
: > Doing tire research, I looked back through the google archives. There
: > is a lot of talk about Thornbirds being 2-ply, some tires being
: > bias-ply, others being other kinds of "ply." I am not familiar with
: > this term... could someone tell me briefly what it means?
round the circumference were called crossplies.
Dave Milne, Scotland
'99 TJ 4.0 Sahara
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:3F83349D.F7B07C33@sympatico.ca...
: The 'plies' are the layers or belts that are inside the tires.
:
: A heavy duty truck tire can be 8 'ply' which means there are 8 different
: layers of belts in the sidewalls.
:
: A Thornbird you say only has 2 plies.
:
: The cheap BFG second line of mud tires, the Mud King's, only have 2
: sidewall plies, real BFG muds have 3 sidewall plies.
:
: This makes the sidewall much stronger and much more resistant to pinches
: or perforations. It also makes it less flexible under full air
: pressure.
:
: So a 2 ply tire will lean into turns and dive the front end down way
: more than a 3 ply sidewall or 8 ply one will do on the street.
:
: Some tires will also list X number of plies for the tread and X # of
: plies for the sidewall.
:
: Bias ply means the belts go sideways at something like 20-45 deg across
: the tire alternating zig zag front to back where radial plies go
: straight across in a 90 deg to the rim or in line with the tire
: 'radius'.
:
: Radial tires flex way more and couldn't work until technology improved
: back in the 70's I think it was.
:
: That is why bias ply tires should be rotated in a cross pattern, because
: the belts go both ways, so the best wear is had my making them turn the
: opposite way by flipping them side to side.
:
: A steel belted radial will 'break in' the belts in the rotation they
: were installed in and can and 'will' blow a belt if crossed in a
: rotation so they spin the opposite direction.
:
: 'Modern' radials are 'supposed' to be able to be cross rotated according
: to the tire makers, the same folks that want to sell you new ones
: remember, eh....
:
: Meanwhile, 'both' of my original Jeep owners manuals state point blank
: to only rotate the tires front to back with radials, if you want to
: rotate the spare in, it goes on the right rear, because the right rear
: is the highest wear tire. It is the default power wheel for a stock
: open diff. Dump the clutch and the right rear is always the one to
: spin. The right front goes to the spare, then back to the right rear on
: the next rotation. The left side only ever rotates front to back.
:
: That is the main reason I only have a used BFG AT as a spare for my BFG
: mud tires. As a spare, I am only going to use it to get to a place to
: fix my 'expensive' tire so I don't give a ---- what side it has to go on
: if I get a flat and it blows a belt as a spare. I can get another for
: the cost of mounting it.
:
: I just tossed 10 tires out of my garage, all with good tread and belts
: that had let go. I bought the tires used from the scrap yard cheap with
: the 50/50 factor if I could guess which way they were previously
: installed.
:
: I bought my Cherokee in 99 with 'modern' radial tires on it that were
: cross rotated, and one blew a belt out. They were Hercules 'Terra Trac'
: tires.
:
: Mike
: 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
: 88 Cherokee 235 BFG AT's
:
: Joshua Nelson wrote:
: >
: > Doing tire research, I looked back through the google archives. There
: > is a lot of talk about Thornbirds being 2-ply, some tires being
: > bias-ply, others being other kinds of "ply." I am not familiar with
: > this term... could someone tell me briefly what it means?
Guest
Posts: n/a
and for the sake of completeness only, older tyres which have layers going
round the circumference were called crossplies.
Dave Milne, Scotland
'99 TJ 4.0 Sahara
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:3F83349D.F7B07C33@sympatico.ca...
: The 'plies' are the layers or belts that are inside the tires.
:
: A heavy duty truck tire can be 8 'ply' which means there are 8 different
: layers of belts in the sidewalls.
:
: A Thornbird you say only has 2 plies.
:
: The cheap BFG second line of mud tires, the Mud King's, only have 2
: sidewall plies, real BFG muds have 3 sidewall plies.
:
: This makes the sidewall much stronger and much more resistant to pinches
: or perforations. It also makes it less flexible under full air
: pressure.
:
: So a 2 ply tire will lean into turns and dive the front end down way
: more than a 3 ply sidewall or 8 ply one will do on the street.
:
: Some tires will also list X number of plies for the tread and X # of
: plies for the sidewall.
:
: Bias ply means the belts go sideways at something like 20-45 deg across
: the tire alternating zig zag front to back where radial plies go
: straight across in a 90 deg to the rim or in line with the tire
: 'radius'.
:
: Radial tires flex way more and couldn't work until technology improved
: back in the 70's I think it was.
:
: That is why bias ply tires should be rotated in a cross pattern, because
: the belts go both ways, so the best wear is had my making them turn the
: opposite way by flipping them side to side.
:
: A steel belted radial will 'break in' the belts in the rotation they
: were installed in and can and 'will' blow a belt if crossed in a
: rotation so they spin the opposite direction.
:
: 'Modern' radials are 'supposed' to be able to be cross rotated according
: to the tire makers, the same folks that want to sell you new ones
: remember, eh....
:
: Meanwhile, 'both' of my original Jeep owners manuals state point blank
: to only rotate the tires front to back with radials, if you want to
: rotate the spare in, it goes on the right rear, because the right rear
: is the highest wear tire. It is the default power wheel for a stock
: open diff. Dump the clutch and the right rear is always the one to
: spin. The right front goes to the spare, then back to the right rear on
: the next rotation. The left side only ever rotates front to back.
:
: That is the main reason I only have a used BFG AT as a spare for my BFG
: mud tires. As a spare, I am only going to use it to get to a place to
: fix my 'expensive' tire so I don't give a ---- what side it has to go on
: if I get a flat and it blows a belt as a spare. I can get another for
: the cost of mounting it.
:
: I just tossed 10 tires out of my garage, all with good tread and belts
: that had let go. I bought the tires used from the scrap yard cheap with
: the 50/50 factor if I could guess which way they were previously
: installed.
:
: I bought my Cherokee in 99 with 'modern' radial tires on it that were
: cross rotated, and one blew a belt out. They were Hercules 'Terra Trac'
: tires.
:
: Mike
: 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
: 88 Cherokee 235 BFG AT's
:
: Joshua Nelson wrote:
: >
: > Doing tire research, I looked back through the google archives. There
: > is a lot of talk about Thornbirds being 2-ply, some tires being
: > bias-ply, others being other kinds of "ply." I am not familiar with
: > this term... could someone tell me briefly what it means?
round the circumference were called crossplies.
Dave Milne, Scotland
'99 TJ 4.0 Sahara
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:3F83349D.F7B07C33@sympatico.ca...
: The 'plies' are the layers or belts that are inside the tires.
:
: A heavy duty truck tire can be 8 'ply' which means there are 8 different
: layers of belts in the sidewalls.
:
: A Thornbird you say only has 2 plies.
:
: The cheap BFG second line of mud tires, the Mud King's, only have 2
: sidewall plies, real BFG muds have 3 sidewall plies.
:
: This makes the sidewall much stronger and much more resistant to pinches
: or perforations. It also makes it less flexible under full air
: pressure.
:
: So a 2 ply tire will lean into turns and dive the front end down way
: more than a 3 ply sidewall or 8 ply one will do on the street.
:
: Some tires will also list X number of plies for the tread and X # of
: plies for the sidewall.
:
: Bias ply means the belts go sideways at something like 20-45 deg across
: the tire alternating zig zag front to back where radial plies go
: straight across in a 90 deg to the rim or in line with the tire
: 'radius'.
:
: Radial tires flex way more and couldn't work until technology improved
: back in the 70's I think it was.
:
: That is why bias ply tires should be rotated in a cross pattern, because
: the belts go both ways, so the best wear is had my making them turn the
: opposite way by flipping them side to side.
:
: A steel belted radial will 'break in' the belts in the rotation they
: were installed in and can and 'will' blow a belt if crossed in a
: rotation so they spin the opposite direction.
:
: 'Modern' radials are 'supposed' to be able to be cross rotated according
: to the tire makers, the same folks that want to sell you new ones
: remember, eh....
:
: Meanwhile, 'both' of my original Jeep owners manuals state point blank
: to only rotate the tires front to back with radials, if you want to
: rotate the spare in, it goes on the right rear, because the right rear
: is the highest wear tire. It is the default power wheel for a stock
: open diff. Dump the clutch and the right rear is always the one to
: spin. The right front goes to the spare, then back to the right rear on
: the next rotation. The left side only ever rotates front to back.
:
: That is the main reason I only have a used BFG AT as a spare for my BFG
: mud tires. As a spare, I am only going to use it to get to a place to
: fix my 'expensive' tire so I don't give a ---- what side it has to go on
: if I get a flat and it blows a belt as a spare. I can get another for
: the cost of mounting it.
:
: I just tossed 10 tires out of my garage, all with good tread and belts
: that had let go. I bought the tires used from the scrap yard cheap with
: the 50/50 factor if I could guess which way they were previously
: installed.
:
: I bought my Cherokee in 99 with 'modern' radial tires on it that were
: cross rotated, and one blew a belt out. They were Hercules 'Terra Trac'
: tires.
:
: Mike
: 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
: 88 Cherokee 235 BFG AT's
:
: Joshua Nelson wrote:
: >
: > Doing tire research, I looked back through the google archives. There
: > is a lot of talk about Thornbirds being 2-ply, some tires being
: > bias-ply, others being other kinds of "ply." I am not familiar with
: > this term... could someone tell me briefly what it means?
Guest
Posts: n/a
DougW wrote:
>
> Dave Milne did pass the time by typing:
> > and for the sake of completeness only, older tyres which have layers going
> > round the circumference were called crossplies.
>
> I want a five ply chocolate cake please.
>
> --
Mmmmmmmm.....
Mike
>
> Dave Milne did pass the time by typing:
> > and for the sake of completeness only, older tyres which have layers going
> > round the circumference were called crossplies.
>
> I want a five ply chocolate cake please.
>
> --
Mmmmmmmm.....
Mike


