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Forums > General Discussion   Shooting the breeze...

Tyre wear... what's considered normal

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Created by GPA > 9 months ago, 18 Apr 2012
Carantoc
WA, 7298 posts
18 Apr 2012 9:40PM
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GPA said...

^^^
Thanks buckles (and everyone who replied). I reckon we'll get 'em done shortly... prob start with a call to Subaru to see what rubber they are now putting on the new Foresters...

Thanks again.


blaggghhhh - what would Subaru know about it.

Go for a set of 38" Simex Extreme Trekkers

buckles
VIC, 107 posts
18 Apr 2012 11:46PM
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Ian K said...

Tyres also harden up with age. If you don't do a lot of miles each year you should get more out of them. I've heard of taxi drivers who'd buy and store tyres for a while before using them to maximise mileage.

But they lose grip, just like an old eraser skates over a typo.


Basically this advice should be "If you haven't worn out your tyres in 2-3 years, replace them anyway."

Marvin
WA, 725 posts
18 Apr 2012 9:58PM
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Rotation is most important early in the life - at 10K (for a car doing 15k per year) - as this is when the tyres are soft (as noted above). Then maybe once more at some point later to wear all four tyres out at the same time (judgement called for).

decrepit
WA, 12887 posts
18 Apr 2012 11:11PM
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only got 30k from factory fitted tyres on my hyundai i30 cw diesel, driven fairly lightly, but a fair few of those ks were 2 trips East. Surprised me I expected to do better than that.

TurtleHunter
WA, 1675 posts
18 Apr 2012 11:46PM
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if their wearing even and don't separate your doing fine.
Anything over 40000km up here is good too.
If you really want them to do high km get a hard compound and soak them in water for a month. I wouldn't recommend it though they can become too brittle and there is always a chance the steel belts will rust but they will last longer in a burnout
As some one said pirelli and yokahama have soft sticky rubber but wear fast on hot roads

Gizmo
SA, 2865 posts
19 Apr 2012 1:32AM
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You may wish to have a look at your tyres and compare them with others using the UTQG code (Uniform Tyre Quality Grading System) It is a USA system and not on all tyres (but most) that are sold in Australia.... It is a comparison and grading for tread wear, traction and temperature.

http://www.toyotires.com.au/tyre-care-safety/sidewall-markings.htm
[about half way down the page.]
Here is a little more about the system.... Oh by the way I do some casual work for a tyre company.....

Uniform Tire Quality Grading
The Uniform Tire Quality Grading rating is a quality rating system developed by the American Department of Transportation. It is designed to tell consumers the relative performance of passenger tires (but does not apply to winter tires).

Below is an example of a UTQG Rating:
150A B

The "150" indicates the treadwear rating
the "A" indicates traction
the "B" indicates temperature

The Treadwear rating is based on a wear test performed on a 400 mile government test course covering specified sections of public roads in Texas. A group of not more than 4 test vehicles travels the course in a convoy so that all tires experience the same conditions. Tread groove depths of the tires being tested are measured after each 800 miles. The same procedure is followed for a set of "control" or "course monitoring tires" Upon the completion of the 7200 mile test, the rating results of both tires are compared, and the tires being tested are assigned a treadwear rating according to government standards. This number can be used to compare between tires. In the above example, this tire rated 150 should last 1/2 as long as a tire rated 300. The relative performance of tires depends upon the actual conditions of their use and may be significantly different from the norm due to differences in road characteristics and climate.

The Traction ratings are AA, A, B, and C, from highest to lowest. This measurement indicates a tires ability to stop in a straight line on wet pavement. The rating is based on a 40mph test where the brakes are "locked up" on wet asphalt and wet concrete surfaces. It's important to remember that this rating does not indicate the tires ability to resists hydroplaning, and do not apply to cornering traction.

Temperature ratings are determined by running tires on an indoor roadwheel test under specified conditions. Successive 30 minute runs are made in 5mph increments starting at 75mph and continuing until the tires fails. Tires with an A rating must withstand at least 114mph, B at least 99mph, and C at least 85mph. These measurements indicate the tire's ability to sustain high temperatures which often cause tires to wear away quickly or in extreme conditions lead to sudden tire failure.



surferstu
1011 posts
19 Apr 2012 12:47AM
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decrepit said...

only got 30k from factory fitted tyres on my hyundai i30 cw diesel, driven fairly lightly, but a fair few of those ks were 2 trips East. Surprised me I expected to do better than that.


Same with Bridgestone 693 on Nissan patrol. Not happy, won't get them again. Would be over the moon with 60k

harry potter
VIC, 2777 posts
19 Apr 2012 2:50PM
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Just about to tick over 100,000km on 35" BFG Muddies ( KM2 ) and still about 15mm tread left.

Rolling a Nissan Patrol

surferstu
1011 posts
19 Apr 2012 12:58PM
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harry potter said...

Just about to tick over 100,000km on 35" BFG Muddies ( KM2 ) and still about 15mm tread left.

Rolling a Nissan Patrol


Is that with speedo adjusted for larger rolling diameter? If not you've travelled even further, either way very impressive

doggie
WA, 15849 posts
19 Apr 2012 1:25PM
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surferstu said...

decrepit said...

only got 30k from factory fitted tyres on my hyundai i30 cw diesel, driven fairly lightly, but a fair few of those ks were 2 trips East. Surprised me I expected to do better than that.


Same with Bridgestone 693 on Nissan patrol. Not happy, won't get them again. Would be over the moon with 60k


Standard tyres on almost any new car will be garbage, unless you are buying premium cars Porshe etc.

dusta
WA, 2940 posts
19 Apr 2012 2:53PM
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GPA said...

^^^
Thanks buckles (and everyone who replied). I reckon we'll get 'em done shortly... prob start with a call to Subaru to see what rubber they are now putting on the new Foresters...

Thanks again.


my11 forrie bridgestone dueler h/t's

GPA
WA, 2529 posts
19 Apr 2012 3:31PM
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^^^
thanks dusta - the same then...

Having said that, we've had no problem with them whatsoever, and they have worn evenly (with rotation)...

Cheers - GPA



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"Tyre wear... what's considered normal" started by GPA