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Post by divimike on Aug 30, 2015 19:42:44 GMT
After seeing much written to recommend the latest Pirelli AngelGT tyre I decided to have a set fitted. Then we went for a tour around Spain. The photo below shows the state of the rear tyre when I checked it one morning. This was after only 7347 miles. Any rear tyre I have used before has been close to 10000 and still legal before it needed to be changed. I challenged Pirelli on this, but as the tyre was still in Spain it was not possible to get it back to them. They would not consider that I was telling the truth, so my only response is to make sure people know that I would not recommend this tyre to anyone. Anyone else have comments on this tyre?  |
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Post by m40man on Aug 30, 2015 19:58:10 GMT
. Anyone else have comments on this tyre? I don't - but the Angel ST was not at all grippy enough, so between them they don't manage to win on either grip or wear  . |
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Post by m40man on Aug 30, 2015 20:02:29 GMT
.... fixed your pic posting - Crikey, that IS well worn  ! |
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Post by chris900divvy on Aug 30, 2015 20:53:04 GMT
I find my Diversion tyres have always been shagged by the time they get to around 8k miles, so 7ish I wouldn't say was very unusual in my experience. Strange wear pattern with yours though, being able to see the cord exposed at the sides rather than the centre where most of the wear will be looks very odd to me! As if you'd been riding on your side banked over for a few thousand miles!
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Post by brianpb on Aug 30, 2015 22:19:18 GMT
I can remember that the Bridgestone rear that my 900 arrived with when new only lasted 3000 miles, that was however when I was younger and foolisher and used the twisty thingy like a switch 'ON or OFF'.
Even now 10k from a rear sounds a lot to me.
Those cords didn't just appear suddenly, how often do you look at your tyres?
As an ex service manager (cars) if I saw a tyre with excessive wear on both shoulders I would know some numpty driver had run it for some miles very under-inflated but I can't believe that anyone could do that with a bike tyre without noticing.
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Post by divimike on Aug 31, 2015 7:15:53 GMT
Thanks for the comments.
I am a slow rider so do not expect to wear a tyre out in less than 8k, and most of the time we are two up.
I was checking the tyres each day and this was after about a 300 mile day through northern Portugal and into Spain. The tyre was looking worn but still had some tread showing before this.
We do enjoy the twisties but in the past it is only the centre that has been down to minimum.
Now back on Bridgestone and feeling happier.
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Post by bev on Aug 31, 2015 11:08:51 GMT
Was it inflated to 42psi ? I knew one numpty who was running his D9 tyres at 30psi (like his car  ) I wore a Pirelli diablo out in less than 3000 miles of normal riding. I got around 6000 from conti's I'd never expect 10,000 from a bike tyre. I have Bridgestones on at the moment but I'm not riding much. More than Trev but less than most other people on here. |
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Post by mlbv on Aug 31, 2015 13:49:37 GMT
I have to ask, do you ever check your tyres before you get on?? that seriously looks like (the high) hundreds of miles of use after it had gone bald....
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Post by divimike on Aug 31, 2015 16:25:32 GMT
As we were touring two up and with baggage the rear was on 41 psi. I check the tyres every time I ride and during a tour every morning along with other parts to ensure nothing is loose and no fluid leeks. Yes the tyre was worn the day before but still had some tread showing. The other side was not a problem, about the same as the middle which shows in the picture.
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Post by bobh on Aug 31, 2015 23:43:33 GMT
No, I've never seen wear like that - even on bikes ridden by mates who I know to be fast in the corners - it's always been the middle that's worn down to the canvas.
Wear on the left shoulder is consistent with riding on the right, on cambered roads, but even so....
It looks to me as if it's the softer compound away from the harder centre strip that's given up - maybe it was very hot? Even so, you wouldn't expect the tyre temperature to get up to track levels when gently touring, certainly not hot enough to melt the rubber. And when you get shoulder wear on track there's always some evidence of heat, in the form of little bobbles of rubber, which I don't see in the picture.
Nonetheless, 7,500 miles from a tyre on the back of a fully-laden D9 sounds about the most I'd expect. It's a fairly narrow-section tyre on a heavy bike. For comparison, I did get about that much out of the OEM Bridgestone on the Fazer8, but that's a fatter (180) section on a lighter bike, ridden solo. Its replacement, A Conti Motion, is only going to manage about 6000.
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klas
Scooter Rider
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Post by klas on Sept 1, 2015 10:57:55 GMT
I've had the same wear pattern on Metzler tyres on my 900. I think it's due to the use of hard rubber in the center and softer rubber up the sides.
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Post by cam7777 on Sept 1, 2015 17:38:55 GMT
As we were touring two up and with baggage the rear was on 41 psi. I check the tyres every time I ride and during a tour every morning along with other parts to ensure nothing is loose and no fluid leeks. Yes the tyre was worn the day before but still had some tread showing. The other side was not a problem, about the same as the middle which shows in the picture. 41psi, two up with baggage sounds a bit low to me |
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Post by m40man on Sept 1, 2015 18:13:01 GMT
41psi, two up with baggage sounds a bit low to me Why? 41 Sounds about right to me - maybe 42 but no more. Once you're down to odd PSI differences your gauge is unlikely to be accurate enough for it to matter much. |
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Post by m40man on Sept 1, 2015 20:47:23 GMT
I see you are back to normal Eh? Seriously - what PSI would you reckon then, if you think 41 a bit low ? .............. & I've always been normal. It's the rest of you that are weird  . |
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Post by chris900divvy on Sept 1, 2015 23:27:20 GMT
I'd always put 42 in mine, when the tyres were towards the end of their lives a little bit more could be used as they lose their stiffness a bit but not much above 43-44psi. I'd say 8k miles is about the absolute max before you start seeing exposed cord with all the tyres I used couriering!
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Post by bev on Sept 2, 2015 11:16:03 GMT
I see you are back to normal .............. & I've always been normal. . Feck me I just fell off my chair.  |
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Post by teejayexc on Sept 2, 2015 17:40:51 GMT
I'd always put 42 in mine, when the tyres were towards the end of their lives a little bit more could be used as they lose their stiffness a bit but not much above 43-44psi. I'd say 8k miles is about the absolute max before you start seeing exposed cord with all the tyres I used couriering! Would have thought dropping the psi a couple of pounds would have made more sense when tyres were toward the end of their lives, increasing, not decreasing the contact patch shirley ? |
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ianp
CBT failure
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Post by ianp on Sept 2, 2015 19:28:56 GMT
My volvo had a front tyre that looked very similar to that. It was caused by a piece of inner mudguard trim falling and rubbing the tyre at high speeds. It had 6mm of tread on the outer edge and middle, and exposed cords on the inner edge. Could something have been catching on the tyre?
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Post by chris900divvy on Sept 4, 2015 8:49:02 GMT
I'd always put 42 in mine, when the tyres were towards the end of their lives a little bit more could be used as they lose their stiffness a bit but not much above 43-44psi. I'd say 8k miles is about the absolute max before you start seeing exposed cord with all the tyres I used couriering! Would have thought dropping the psi a couple of pounds would have made more sense when tyres were toward the end of their lives, increasing, not decreasing the contact patch shirley ? I think the normal contact patch is actually increased as the tyre wears due to becoming squared off spending most of its time upright in a straight line, a little bit of extra pressure I suppose counteracts that to a certain degree and makes up for the loss of tension you get within the tyre. I find lowering the pressure would just give you a more squirmy ride, I prefer things to feel firm. |
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Post by HRHpenfold on Sept 4, 2015 9:51:44 GMT
I have never gotten that sort of mileage out of a normal tyre, a good sports touring tyre is done in 5500 miles max, the Corsa on my Breva is done in under 3000 miles, best wearing tyre I ever had was the original tourance on my Gs, which lasted 9,000
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Post by HRHpenfold on Sept 11, 2015 15:27:23 GMT
We have just had a Ducati Diavel in for a new rear tyre, the first tyre lasted 2000 miles until the canvas was showing, 600 of those miles were running in miles, and the choice of only one tyre at the suppliers, 240/45/17, £176 a tyre impressive bike with low seat height though!  |
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Post by stukeith on Sept 18, 2015 12:00:29 GMT
8k miles I don't think I ever got more than 3k on any of my R series bikes I've owned with 010's on there |
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Post by chris900divvy on Sept 21, 2015 9:31:40 GMT
We have just had a Ducati Diavel in for a new rear tyre, the first tyre lasted 2000 miles until the canvas was showing, 600 of those miles were running in miles, and the choice of only one tyre at the suppliers, 240/45/17, £176 a tyre impressive bike with low seat height though! Eek! Would be difficult for me to put up with that sort of tyre wear especially at those prices. You'd think with a tyre that broad you'd be looking at much extended tyre change intervals. |
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Post by stukeith on Feb 29, 2016 12:43:56 GMT
I have to ask, do you ever check your tyres before you get on?? that seriously looks like (the high) hundreds of miles of use after it had gone bald.... I used to get 3k on my R1 with 010 Bridgestone. Just brought a pan with metzlers let's see how long they last Would have thought dropping the psi a couple of pounds would have made more sense when tyres were toward the end of their lives, increasing, not decreasing the contact patch shirley ? I think the normal contact patch is actually increased as the tyre wears due to becoming squared off spending most of its time upright in a straight line, a little bit of extra pressure I suppose counteracts that to a certain degree and makes up for the loss of tension you get within the tyre. I find lowering the pressure would just give you a more squirmy ride, I prefer things to feel firm. |
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Post by crickleymal on Feb 29, 2016 22:23:14 GMT
I had a workmate tell me that my tyre was down to the cords once. It was perfectly fine before the 40mile ride to work, so they do wear that fast sometimes.
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