Tyres... what would cause this?

Did a little jaunt to Stratford and back this afternoon - nice enough ride.

However when I got back I noticed the front tyre had an unusual mark on it -
as if I had rode over a very hot
piece of metal or something - the mark's over about 15cm of the tyre,on the
left side of the tread, is sunken slightly, and almost shiny, with a rounded
shape to the depression. For those smart arses, no it's not the tread!

WTF did I rode over?

 

This is one of your seth effrikanisms, I suspect. For some reason I'm
finding it really annoying although I don't usually mind.. Anyway,
here's a new word for you - "ridden".

However i suspect this one is just a typo.

Anyway, it's been warm today. Could you possibly have gone very slowly
over a very hot cattle grid at any point? That's about my only guess.

 

How the **** are we supposed to know?

FWIW, the back tyre on my FJ did that just after I'd got it.

 

New tyre or new FJ?

 

Picture?

 

New (to me) FJ, old tyre. The blemish wasn't there when I got the bike,
but seemed to appear somewhere around 500 miles of riding.

 

heh.

 

Sounds like a tyre defect to me. Maybe some rubber not completely fused to
the rest?
See if you can get a replacement.

 

Heh - it's an idea.. though i suspect the Bridgestone man will look at tyre
that's done 6000+ miles with just a -hint- of scepticism

 

Rode/ridden. Then/Than - there are more important things to worry yourself
about!

Yes. My newsnet postings are reflecting my general decline.

Nice idea, but a) there are no cattle grids on the route I did, b) an
average speed of 43mph over 115 miles would imply that whilst I'm still
slow, I'm not THAT slow.

 

Before I set out - it was fine (36psi).

And the mark on the tyre (which I can't a picture of for a few reasons)
looks like a 'rolling' mark - ie something that the tyre went over, rather
then something coming off the tyre.

 

This is just bait for me, isn't it...

 

dwb says...

I have a SigmsSport BC700 speedo fitted to my CB250RS. I calibrated it
very carefully when I fitted it, and the top speed is recorded as being
84.7mph[1]. I average 43.77mph on that bike.

[1] Downhill and slipstreaming a Mercedes Sprinter van.

 

After seeing Sean with one I wish I'd fitted a cycle computer to the MZ
before going to Frankfurt.

I'll have one for N. Africa/Transylvania.

 

sweller says...

I find it very useful, mainly because it incorporates a clock so I can
tell how late I am for work. It gives me time, speed in either mph or
kmh, average speed, top speed, trip mileage, total mileage and has a
stop-watch facility too. It took 20 minutes to fit once I'd got a Cat-
Eye magnet from a bicycle shop to clamp to a wheel spoke, and about 10
minutes to calibrate.

Hein Gericke are selling the later model Base Line 800 for about 15 quid
atm. There's a m/cycle specific Targa Titan for 20 quid, with longer
cable and larger buttons, but I don't have a problem with the one I have
tbh.

The speedo/tacho binnacle on the CB is only still there to house the
idiot lights and what's left of the ignition switch, neither clock has a
cable running into it.

 

is it just undecided, or are you very bad at map-reading?

 

Undecided.

Or both for the hard bastards.

 

for some reason I'm much more interested in the Transylvania option.

heh. I don't have a suitable bike. What are the rules again?

 

I can't remember the new ones. Something stupid is my guess.

Pretty much Frankfurt rules

 

Where do you ride it though - seriously - is that on motorways with a bit of
town, or mainly town/country rode etc