Tyres, defects and pushing too hard.

[talkToTheHat]

It looks like I'm getting some tearing on the surface of my front tyre, is this a sign that I'm pushing to hard and nearly wiped out, or just what happens when ridden with enthusiasm.

https://cdn.bikechatforums.com/files/image_207.jpg


Also I've spotted odd marks in my rear, there are some voids that look like hairs or bristles from a paintbrush or similar were embedded in the rubber when the tyre was moulded, and there's an odd set radial lines just to the left of them? Thoughts? And I know they are old fashioned crossply tyres with a family bucket of chicken strips.
https://cdn.bikechatforums.com/files/image_883.jpg
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[Ste]

Good question.

To find out how much of the rear tyre is left you should go and do a burnout until the tyre pops.

[kramdra]

The front looks almost unused, and shiny. The torn surface is what a used tire normally looks like. Has it done 50 miles?

Radial lines do not line up, so are not from rubbing on hugger, look like moulding lines.

Defect is rider

[talkToTheHat]

They've got about 1500 miles on them, fitted November. Much careful pottering about town on slippery winter city streets. Recent sunshine has resulted in everywhere being at least a tank of fuel away and remembering that the twisty bit on the handlebars twists. Contis fitted previously wore like a 50p coin at the rear but rubber surface stayed pretty much the same until I hit the wear markers. Avons move around a bit if I'm hamfisted, contis just gripped until they didn't.
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[Ste]

What pressures are you running?

[talkToTheHat]

29 front 36 rear, as is Avon's recommendation and Yamaha's recommendation for payload of more than 90kg or high speed riding. I'm just over that before leathers and luggage. Is 90/90-19 front and 140/90-15 rear. For some probably historic reason they have tread round a wider arc than modern radials, so I'm not getting to the edges without grinding more than footpegs.

I'm used to seeing road rubber on boring road vehicles looking smooth. Racecar tyres done right get a melty bumpy surface if temperature is managed properly and tears are bad as they indicate graining or inappropriate temperatures. I have seen plenty of sportsbikes get that melty look to them. I suspect that is doing it right. I would have thought tears in the surface layer were a sign somthing was not good, although possibly 'hard, all weather tyres on a cruiser' is enough of the unright.

The back has me more puzzled. The lines aren't straight enough to be old tide marks showing the used / unused interface.
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[Slacker24seve...]

There is nothing wrong with them, other than the fact they're Avons.
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[garth]

Lol.

No, you've got a huge amount of unused tyre left and they're not blue.

But yeah as above, Avons, the only place I'd be happy to push them is to the bin.
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