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 Post subject: Tyres
PostPosted: Sun Oct 01, 2017 2:36 pm 
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50 cc

Joined: Sat Sep 23, 2017 12:57 pm
Posts: 2
Hi just wondering if anyone has problem with mt43 rear tyres middle bits of rubber coming off


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 Post subject: Re: Tyres
PostPosted: Sun Oct 01, 2017 3:21 pm 
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650 cc Monster

Joined: Fri Apr 03, 2009 3:08 pm
Posts: 4391
Tread-shedding is usually caused by sustained high speed combined with under or over inflation (or a knackered mousse).

Or giving it too much throttle on sharp rocks.

The on/off-road tyres we use will always be a compromise, and the compromise sometimes presents in a dramatic manner.


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 Post subject: Re: Tyres
PostPosted: Sun Oct 01, 2017 3:42 pm 
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50 cc

Joined: Sat Sep 23, 2017 12:57 pm
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Thanks Richard only rode from Taunton to Minehead average speed 65 mph it's just the middle nobbles seem to losing little bits of rubber


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 Post subject: Re: Tyres
PostPosted: Sun Oct 01, 2017 4:22 pm 
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200 cc

Joined: Sun Oct 16, 2011 2:35 pm
Posts: 406
Location: Somerset
Rossi wrote:
Thanks Richard only rode from Taunton to Minehead average speed 65 mph it's just the middle nobbles seem to losing little bits of rubber


Taunton to Minehead at an average speed of 65mph is fairly tanking it; I'm not surprised you're losing knobbles off a trials tyre.

I ride with Somerset TRF and plenty of us use MT43s, or the much softer Maxxis TrialMaxx. Losing knobbles isn't generally an issue.


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 Post subject: Re: Tyres
PostPosted: Sun Oct 01, 2017 8:19 pm 
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650 cc Monster

Joined: Fri Apr 03, 2009 3:08 pm
Posts: 4391
If it's only little bits of rubber as opposed to entire individual lumps of tread, then that's normal.

The tread compound on those tyres is soft, and unsupported. Sharp bits of road grit cut into the tread blocks, and then the 'flex' in the rubber sees the cuts turn into tears and off they come.

I wouldn't go over about 55 - 60 mph on a trials tyre...and not over 50 if it was a 'super sticky'.


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 Post subject: Re: Tyres
PostPosted: Sun Oct 08, 2017 9:44 am 
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80 cc

Joined: Sun Jun 22, 2014 11:23 pm
Posts: 28
Rossi wrote:
Thanks Richard only rode from Taunton to Minehead average speed 65 mph it's just the middle nobbles seem to losing little bits of rubber



What pressure were you running at?
- could have been too high


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