[Closed] What is destroying my shoe??

catching on the crank?

catching on the crank?

Not that I can see and no signs of wear/polishing on the crank.  It's a 105 crank, am switching to Ultegra (on the same bike) when they arrive.

Er, maybe I'm missing something but if you sit on the bike at a standstill and backpedal, does the wear area come close to anything that might rub it?

That's drastic rub - gaffa tape a 'red crayon' on the spot and look for signs?

And stop snapping your heels together like Dorthy / German officers.

is the tyre worn on the NDS? Maybe you hold your foot in such a way it rubs when you're descending?

Er, maybe I’m missing something but if you sit on the bike at a standstill and backpedal, does the wear area come close to anything that might rub it?

Not that I can see in user testing, hence the mystery.

That’s drastic rub – gaffa tape a ‘red crayon’ on the spot and look for signs?

Interesting concept, but a whole crayon is going to really mess with real world clearances.

And stop snapping your heels together like Dorthy / German officers.

Ja mein Furher!

is the tyre worn on the NDS? Maybe you hold your foot in such a way it rubs when you’re descending?

Don't think so, will check but I'm pretty sure my feet are at 3/9 o'clock when freewheeling anyway (and so out of tyre line)

'Red crayon' - could be 'carbon paper' or just a dab of oily poster paint 😉

Passing terriers?

Passing terriers?

Don't see them locally, it's all 'Doodles' round here.

Water bottle in cage?

it is catching the front mech? or the cable from the mech?

Bottle cage? Or someone f$$cking with you?

it is catching the front mech? or the cable from the mech?

None drive side foot.

Bottle Cage 

I'll check, using plastic elite jobs so pretty low profile and shouldn't be causing that sort of damage.

I reckon that must be tyre buzz when uncliping

Could electric tape over that bit of shoe, crayon the leccy tape in red then see if leaves any marks. Smaller than a whole crayon.

I'd go with tyre buzz too.

That said, the blob of paint/crayon idea will tell you for certain and won't harm anything.👍

go-pro attached on seat post looking down, go for a ride.

Could electric tape over that bit of shoe, crayon the leccy tape in red then see if leaves any marks. Smaller than a whole crayon.

Certainly going to give that a go when I'm out next.  May try chalk first as the white should show easily.

If it is unclipping I'm going to have to re-tune my brain.

I can’t believe that’s be unclipping, unless you unclip hundreds of time each ride, and even then...
That is constant rubbing somewhere when you ride, be that tyre, frame, crank, whatever.
Has it happened on any other shoe/bike combo? And if not, could you try another pair of shoes on that bike?
Do you lead with that foot when freewheeling? If so, could it be chainring or chain damage ?

<Am disappointed >

"wee in his shoes" - see which bit of the bike smells of piss.

</I'm sure 'we' could of worked it in>

-Must be a tyre buzz to do that much damage quickly -

Looking at the other scuffs by the hole i'd say it was tyre buzz.

Get someone to ride behind you, I bet you do it when you don't realise, climbing, attacking rolling hills etc.

Tape some sandpaper over the hole in the shoe, it should pretty quickly show up where you're rubbing your shiny new looking bike

^^ Evil sod.lol😆

Tyre buzz I can imagine, but not when unclipping - who unclips by twisting the heel inwards??!!

Clip your shoe into the pedal without your foot in it and turn the cranks round and push the heel of your shoe in and see what it can touch.
Then look in those areas when you ride.

Tyre buzz I can imagine, but not when unclipping – who unclips by twisting the heel inwards??!!

I do!

I've come back to this post 3 times already!! I can't wait to find out what's happening, c'mon don't keep us in suspense....

Looking at the wear pattern it doesn't look like it's caused by rubbing the frame, crank or tyre. More like two things rubbing together when in a bag, how do you store or transport your shoes if driving to the start point of a ride? Could even have happened in one journy or has the wear become larger over a number of weeks?

Mice. The bike is fine, no rubbing at all but when you store your shoes for the night, the mice nibble that one.
Just that one.

😉

Right, update.  Just got back from an Mtb ride and had a quick look at the road bike when in the shed. A tell tale rubbing on the tyre logo, so double rum rations to those who called it.

Now just to figure out when I’m actually coming into contact with it to see what I have to try to get out of the habit of doing before I use the current damage to justify a nice new pair of shoes.

No red crayon required and glad I didn’t try sandpaper as I’d end up covered in Stans!

Hurrah! The suspense was killing me.

I can sleep soundly tonight now.😁

But the main question is still to be answered...do people REALLY unclip by moving their heels INWARDS? Really?
It’s never even occurred to me to try...surely your heel would end up really close to the bike and...oh! 😉

But the main question is still to be answered…do people REALLY unclip by moving their heels INWARDS? Really?
It’s never even occurred to me to try…surely your heel would end up really close to the bike and…oh! 😉

Yes, yes, me! (See above)
Hasn’t caused me any problems in the past 135,000 miles so I can’t really see the issue.

I didn’t consciously know that I unclipped inwards, but yes it sounds like indeed I may be one of those wierdos (I ride flats on the Mtb and am late in life to the ways of the road, perhaps unable to learn my lesson until now).

Looks like my next few rides will be spent paying more attention to my feet at junctions and lights.  There’s always the reward of reform and new shoes to look forward to.

Also means the pedal spacers I ordered from Amazon today are going straight into the spare box (or on my Mtb).

To be fair thats probably actually only a few bursts of tyre rub it might not even be unclipping. Do you twist your feet when you look behind you?

Now just to figure out when I’m actually coming into contact with it to see what I have to try to get out of the habit of doing before I use the current damage to justify a nice new pair of shoes.

Descending left handers?? outside leg straight at 6 O'Clock, inside leg bent at 12 O'Clock and your foot twisted in a bit?

Yeah good shout carlos.

When you unclip unless you do ot really really early the tyre shoild be pretty slow i am basically stopped before i unclip.

Which probably why its not an issue for people who unclip inwards

My first reaction was mice (just based on the edges of the plastic and that the little ****s eat anything)

If it is tire buzz I’m amazed you haven’t noticed anything and can only imagine its something to do with descending because to doing so much damage up hill or on the flat you would definitely notice the resistance.

When you unclip unless you do ot really really early the tyre shoild be pretty slow i am basically stopped before i unclip.

Not to mention you don't unclip that often, even if it does hit the tyre it shouldn't be often enough to cause that kind of damage.

Hasn’t caused me any problems in the past 135,000 miles so I can’t really see the issue.

Beginners always get it wrong.

😁