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Old 08-11-2009, 11:06 AM   #1
2dino
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Join Date: Aug 2003
Default jawmark and wearbar

Hi Folk,

Bought used Sti BBS rims with tyres.
Need some input.

Inside the rims are set of marks located at 12, 3, 6, 9 o'clock positions
I think these are marks from jaw of wheel mounting machine.
The picture show a typical mark:

Do you think the marks are only cosmetic?

On the same topic, tyres on rim are 5 yr old Dunlop M3.
I presume the wear bar is where I pointed to on picture.

Think I can get another season out of it given the age (5-1/2yr this X'Mas)?


TIA,
2dino
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Old 08-11-2009, 11:43 AM   #2
thorongil
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Default

Quote:
Originally Posted by 2dino View Post
On the same topic, tyres on rim are 5 yr old Dunlop M3.
I presume the wear bar is where I pointed to on picture.
Yep, that's the wear bar.
Quote:
Think I can get another season out of it given the age (5-1/2yr this X'Mas)?
Where do you live? How much snow/ice do you see in the winter? 5.5 years is rather old for a tire

I have 4 seasons and 32,000+ miles on my Dunlop M3s, and while they still have some tread depth left before the wear bars, I fully intend to replace the tires this fall, as I have noticed a drop off in snow/slush traction over the past couple of years and I do see an appreciable amount of snow and slush each winter (usually including two or more snowfalls in the 1+ foot range).

If you don't see much snow/slush, etc, you're probably okay for a little while longer, as long as you don't expect too much from the tires.
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Old 08-11-2009, 12:04 PM   #3
2dino
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Default Thks, thorongil. Luk, any comment?

Thks, thorongil.

I am up at the great white north Toronto - so not really much snow mostly plowed roads.
I do realize the tyres are old. Seems a bit wasteful to throw away still usable tyres. I intend to test them out early in the season and if I feel too insecure I'll scramble for a new set.
Could be in trouble trying to hop over to Buffalo, though.

Luk, any comment on 5.5 yr Dunlop M3.

The jaw marks., anyone?

2dino
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Old 08-11-2009, 02:01 PM   #4
Uncle Scotty
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throw
the
old
tires
in
the
****can
where
they
belong
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Old 08-11-2009, 05:30 PM   #5
2dino
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Default

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Originally Posted by Uncle Scotty View Post
throw
the
old
tires
in
the
****can
where
they
belong
Really that bad
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Old 08-11-2009, 06:36 PM   #6
silver2004impreza
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The jaw marks are just cosmetic, and are nothing to worry about. Yes, those marks are from the tire mounting machine.

The tires look like there's not much tread left on them, the bar that you have the red arrow pointing to in your picture is in fact the wear bar. I've never driven on Dunlop M3s before, so I don't know how well they hold up to age, but they do look rather worn out. Winter tires typically aren't terribly expensive, so it might be worth it to you to just replace them.
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Old 08-12-2009, 08:28 AM   #7
2dino
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Default

Thank, silver2004impreza & everyone who helped with input..

I rechecked and there are only 4/32-5/32" tread left.
Combine with the age, I'v decided to use them a bit as pre-winter set and buy new tyres to be swapped on before the temp drops.

Cheers.
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Old 08-12-2009, 06:16 PM   #8
Boxologist
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Default

i would use teh tyres for one last season if they show no signs of dry rot. While nowhere near the performance of the new tyre, it should be adequate if in good condition.
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Old 08-12-2009, 07:06 PM   #9
Uncle Scotty
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Quote:
Originally Posted by Boxologist View Post
i would use teh tyres for one last season if they show no signs of dry rot. While nowhere near the performance of the new tyre, it should be adequate if in good condition.
depends on how heat cycled they are

if they got good and hot more than a time or 3 they may be hard as rocks when they get cold
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Old 08-13-2009, 12:57 PM   #10
srad711
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Quote:
Originally Posted by Uncle Scotty View Post
depends on how heat cycled they are

if they got good and hot more than a time or 3 they may be hard as rocks when they get cold
So exactly what tempereature is good and hot?? Does the amount of time they are good and hot affect hardeness or just the number of times they have been good and hot? What exactly in the rubber compound changes to make them hard as rocks? or is it maybe just the cold temperature made them hard. Are they still hard as rocks when it is warm out due to the 1 or three heat cycles???

Please elaborate for us all.
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Old 08-13-2009, 05:40 PM   #11
mosc
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I would throw out any winter tire below 6/32"
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