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Offline aggy

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square tyres
« on: 22 February, 2012, 12:27:28 PM »
Whilst oiling my chain, bike on the centre stand , just rotating the back wheel  i noticed the apex of my back tyre has squared off to form a definite flat centre section , the tyres have got 6,500 miles on them bike is about 7 months old, is this change in shape normal or due to other factors....tyre over inflated/under inflated , riders girth pushing down on the tyre, any words of wisdom gratefully accepted. :028:

Offline Bifferman

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Re: square tyres
« Reply #1 on: 22 February, 2012, 01:54:47 PM »
How long have you been riding aggy ?

Offline Nuff

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Re: square tyres
« Reply #2 on: 22 February, 2012, 04:12:55 PM »
Which tyres?
Take my advice or not, I really don't care. I'm just telling you what I think and would do on my bike.

Offline golfsharpy12

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Re: square tyres
« Reply #3 on: 22 February, 2012, 05:24:23 PM »
*Originally Posted by Bifferman [+]
How long have you been riding aggy ?

I would say about 110 hours if he averaged 60 or so :018:

Steve

Offline Shooter

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Re: square tyres
« Reply #4 on: 22 February, 2012, 07:52:46 PM »
aggy
      Youve done 6.500 miles and only just noticed squared tyres, your lucky.

Offline aggy

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Re: square tyres
« Reply #5 on: 23 February, 2012, 10:37:14 AM »
how long, well i passed my test about fifteen years ago , got a triumph trophy , gave it up when my job took me to a decapitated motorcyclist near Dorking, decided to get back into it about two years ago now that i work in London, so i suppose about three years , but i do about 8000 miles a year all weathers, so spill the beans guys , is this normal?

Offline Bifferman

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Re: square tyres
« Reply #6 on: 23 February, 2012, 10:48:51 AM »
Depends on tyre and also riding style.  Single compound tyres will usually square off much quicker than dual compound tyres which is why manufacturers brought out dual compounds in the first place. 

Judge for yourself with Mich PR2's.  Have posted pics of rears only at new, c.6300 miles, at just under 8000 miles (two pics) and just for comparison a new PR3.   I generally accelerate hard but don't otherwise ride like a loon, most of my braking is on the front with stability on the back but I do not rely on the rear for retardation unlike many.  Bear in mind that the pics at 8000 miles are of demounted tyres so the profile will look squared more anyway.

At about 4k-4.5k miles the tyrea didn't look squared at all, at 6k miles they were starting to show signs of squaring but nothing dramatic at all, by 8000 they were showing definite signs of squaring but the profile was still amazingly good.

Going to use my all time hated expression now;  'Hope that helps'.

Andy

 :149:
« Last Edit: 23 February, 2012, 11:14:33 AM by Bifferman »

Offline bonoeuf

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Re: square tyres
« Reply #7 on: 23 February, 2012, 11:06:10 AM »
The more straight roads you ride on the quicker it will square off. As I try to avoid dual carriageways like the plague mine rarely square off. As bifferman says dual compound tyres will do it less. So if you ride upright on long straight commutes with single compound tyres within a short time you will be riding on a breeze block. Lots of variables, so yes it is normal depending on your riding.
Marty
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Abraham Lincoln.

Offline Rev Ken

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Re: square tyres
« Reply #8 on: 23 February, 2012, 03:01:28 PM »
Once your tyre squares off you can park it without putting the side stand down.......... :007:

(Depending on your style of riding a squared off tyre is still OK for commuting etc until the tread depth is getting towards the limit, and then it is time to get some PR3s - whereupon you'll have to learn to ride all over again as they will feel completely different! Your bike will immediately feel far more sporty with a far better grip on the planet. :123:
Never ride faster than your Angel can fly.

Offline aggy

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Re: square tyres
« Reply #9 on: 23 February, 2012, 06:13:26 PM »
Cheers guys, cleared up alot there , thanks Andy for those pictures , this site has been a font of knowledge for me, thankyou all. :152:

 


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