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  #1  
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col
 
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Default tyre tread symetry question - 01-29-2007 , 01:56 PM





I just had new tyres fitted to my nissan primera - firestone TZ200
'fuel saver'.
The tread on these is asymetrical. There seems to be no marking for
forward, inside or outside.
They have been fitted so that the part of the tyre that is on the
inside of the left side front and rear tyre is the same as the the
part that is on the outside of the right side tyres. Forward is the
same for all 4 tyres.

I can't find anything conclusive on the net about this. Is it normal
for budget tyres to have an asymetrical pattern but be fitted any
which way?
I'm not worried about the look, just safety.

Have these been fitted wrong? Have I been sold four left (or right)
tyres? Is there a correct and an incorrect (sideways or longways) way
to fit these tyres?
I would ask the guys at the garage but I don't really trust them, I've
already had to go back once because they fitted the wrong size of
tyres the first time.

thanks, col


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  #2  
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Paul Giverin
 
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Default Re: tyre tread symetry question - 01-29-2007 , 02:58 PM





In message <1170100563.438263.12330 (AT) m58g2000cwm (DOT) googlegroups.com>, col
<colin_brown (AT) hotmail (DOT) com> writes
Quote:
I just had new tyres fitted to my nissan primera - firestone TZ200
'fuel saver'.
The tread on these is asymetrical. There seems to be no marking for
forward, inside or outside.
I've been using TZ200's for a couple of years and they are not
asymmetrical.

http://www.firestone.eu/bfe/v/index....fada010VgnVCM1
000005101a10aRCRD


--
Paul Giverin

British Jet Engine Website http://www.britjet.co.uk


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  #3  
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col
 
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Default Re: tyre tread symetry question - 01-29-2007 , 04:15 PM




On 29 Jan, 20:58, Paul Giverin <p... (AT) giverin (DOT) co.uk> wrote:
Quote:
In message <1170100563.438263.12... (AT) m58g2000cwm (DOT) googlegroups.com>, col
colin_br... (AT) hotmail (DOT) com> writes

I just had new tyres fitted to my nissan primera - firestone TZ200
'fuel saver'.
The tread on these is asymetrical. There seems to be no marking for
forward, inside or outside.I've been using TZ200's for a couple of years and they are not
asymmetrical.

http://www.firestone.eu/bfe/v/index....1665fada010Vgn...
000005101a10aRCRD

--
Paul Giverin

British Jet Engine Website http://www.britjet.co.uk
standing in front of the car looking towards the windscreen, the tread
pattern on the two front tyres is roughly:
Code:
------         ------

 
Quote:
 
 
 
			
				/\\\\/|       |/\\\\/|
/\\\\/|       |/\\\\/|
/\\\\/|       |/\\\\/|
/\\\\/|       |/\\\\/|
/\\\\/|       |/\\\\/|
------         ------
			
		 
 
 


I wondered if it should be more like this?
------         ------

 
Quote:
 
 
 
			
				/\\\\/|       |\////\|
/\\\\/|       |\////\|
/\\\\/|       |\////\|
/\\\\/|       |\////\|
/\\\\/|       |\////\|
------         ------

Col



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  #4  
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Mike G
 
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Default Re: tyre tread symetry question - 01-29-2007 , 04:36 PM



"col" <colin_brown (AT) hotmail (DOT) com> wrote

Quote:

On 29 Jan, 20:58, Paul Giverin <p... (AT) giverin (DOT) co.uk> wrote:
In message <1170100563.438263.12... (AT) m58g2000cwm (DOT) googlegroups.com>, col
colin_br... (AT) hotmail (DOT) com> writes

I just had new tyres fitted to my nissan primera - firestone TZ200
'fuel saver'.
The tread on these is asymetrical. There seems to be no marking for
forward, inside or outside.I've been using TZ200's for a couple of years
and they are not
asymmetrical.

http://www.firestone.eu/bfe/v/index....1665fada010Vgn...
000005101a10aRCRD

--
Paul Giverin

British Jet Engine Website http://www.britjet.co.uk

standing in front of the car looking towards the windscreen, the tread
pattern on the two front tyres is roughly:
Code:
------         ------
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
------         ------

I wondered if it should be more like this?
------         ------
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
------         ------
IMO, yes.
Mike.



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  #5  
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Adrian
 
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Default Re: tyre tread symetry question - 01-30-2007 , 06:16 AM


col (colin_brown (AT) hotmail (DOT) com) gurgled happily, sounding much like they
were saying :

Quote:
I just had new tyres fitted to my nissan primera - firestone TZ200
'fuel saver'.
The tread on these is asymetrical. There seems to be no marking for
forward, inside or outside.

I've been using TZ200's for a couple of years and they are not
asymmetrical.

standing in front of the car looking towards the windscreen, the tread
pattern on the two front tyres is roughly:
Code:
------         ------
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
------         ------

I wondered if it should be more like this?
------         ------
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
------         ------
Firestone don't describe the TZ200 as either assymetric or
unidirectional. If it was either, it'd be clearly marked as such with a
direction or orientation.

Stop worrying. If you see truly assymetric tyres, you'll see that the
change in tread is FAR more marked...


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  #6  
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Nick Finnigan
 
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Default Re: tyre tread symetry question - 01-30-2007 , 06:28 AM


col wrote:
Quote:

standing in front of the car looking towards the windscreen, the tread
pattern on the two front tyres is roughly:
Code:
------         ------
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
------         ------

I wondered if it should be more like this?
------         ------
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
------         ------
Your preferred option seems to require a different tyre, rather than
just fitting a different way.


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  #7  
Old   
Mike G
 
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Default Re: tyre tread symetry question - 01-30-2007 , 06:37 PM



"Nick Finnigan" <nix (AT) genie (DOT) co.uk> wrote

Quote:
col wrote:


standing in front of the car looking towards the windscreen, the tread
pattern on the two front tyres is roughly:
Code:
------         ------
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
------         ------

I wondered if it should be more like this?
------         ------
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
------         ------

Your preferred option seems to require a different tyre, rather than just
fitting a different way.
Why do you say that?
All that's needed is to refit one tyre, so the present outside of the tyre,
is on the inside.
Or, to put it another way. Reverse the rotation of one tyre.
Mike.



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  #8  
Old   
Adrian
 
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Default Re: tyre tread symetry question - 01-31-2007 , 03:03 AM


Mike G (metier (AT) lycos (DOT) co.uk) gurgled happily, sounding much like they
were saying :

Quote:
standing in front of the car looking towards the windscreen, the
tread pattern on the two front tyres is roughly:
Code:
------         ------
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
|/\\\\/|       |/\\\\/|
------         ------

I wondered if it should be more like this?
------         ------
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
|/\\\\/|       |\////\|
------         ------

Your preferred option seems to require a different tyre, rather than
just fitting a different way.

Why do you say that?
All that's needed is to refit one tyre, so the present outside of the
tyre, is on the inside.
Or, to put it another way. Reverse the rotation of one tyre.
Have another look at the first drawings. Turn one of the tyres round. What
do you get? Yep, EXACTLY the same...


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  #9  
Old   
Mike G
 
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Default Re: tyre tread symetry question - 01-31-2007 , 04:16 AM



"Adrian" <toomany2cvs (AT) gmail (DOT) com> wrote

Quote:
Mike G (metier (AT) lycos (DOT) co.uk) gurgled happily, sounding much like they
were saying :

Why do you say that?
All that's needed is to refit one tyre, so the present outside of the
tyre, is on the inside.
Or, to put it another way. Reverse the rotation of one tyre.

Have another look at the first drawings. Turn one of the tyres round. What
do you get? Yep, EXACTLY the same...
Damnit you're right, and I did think about it.
Wish I had a brain. :-)
Mike.



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  #10  
Old   
Adrian
 
Posts: n/a

Default Re: tyre tread symetry question - 01-31-2007 , 06:18 AM


Mike G (metier (AT) lycos (DOT) co.uk) gurgled happily, sounding much like they
were saying :

Quote:
Why do you say that?
All that's needed is to refit one tyre, so the present outside of
the tyre, is on the inside.
Or, to put it another way. Reverse the rotation of one tyre.

Have another look at the first drawings. Turn one of the tyres round.
What do you get? Yep, EXACTLY the same...

Damnit you're right, and I did think about it.
Or am I left? Does it make a difference?

Quote:
Wish I had a brain. :-)
There's plenty of low mileage ones kicking about...


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