What about tyre running in the opposite direction?

[raleighnut]

A followup:

Juni or so 2024 I discovered frame broken at the driveside tube that connects bottom bracket to rear axle, and in my case has a slot piece in it to allow inserting a belt.
I got a replacement frame 3-4 months later and assembled everything back together.
The rear outer tyre Schwalbe "Super-Moto-X" has now worn towards one place a little peek green anti leak stuff.
Didn't catch it earlier, but while checking tyres I now did: the wear is now precisely symmetrical.

So it looks like there was something wrong with the frame at purchase time (2017).
At some point I even started to think that it was due to a habit of resisting pedals more with one leg than the other and I started to pay attention to it, with no effect.
A rear tyre lasts about a year, so I have replaced them about 6 times, now would be the 7th, and it's the first that wears normal

Also new, maybe related, the middle still has profile, the sides not, while I keep it at the same pressure as before. It may be a normal thing for wide (62 mm) tyres - I've noticed this at mountain bike tyres from other people, only that due to the whatever was wrong with the old frame upon acquiring the bike, it had been else for me.

And while I type this, I start to wonder, the bike showed a weird instability, already noticed at the first test ride from the dealers shop and back - I had to pay much more attention when riding, and dealer couldn't explain it.
The instable feeling (it was like difficult to ride just straight) suddenly vanished after putting a basket with some 3-4 kilo stuff on top of the rear rack, so I didn't consider it anymore as a problem.
Taking away that stuff again, and the instable feeling returned, proving that this weight on top of the rear rack made the difference.
So as soon as I get the chance, I'll remove it and check.
If it doesn't make a difference, then whatever was wrong with the old frame also caused that instable feeling.

Worn at the edges and not in the middle...........................underinflated
This would also lead to instability as the tyre 'squidges' about

 

[silva]

...and on a bicycle, what would be the consequence of this happening?

an annoyant garbling sound and people staring.

 

[silva]

Worn at the edges and not in the middle...........................underinflated
This would also lead to instability as the tyre 'squidges' about

Schwalbe Super-Moto-X shows 2.0-4.0 bar, they are kept at the max, I have to otherwise it gets nasty in turns, I've seen a weight/pressures table and for me+default luggage for this tyre specs it specifies the max, confirming the practice.
So "underinflated" is then judged as a "no", no?
Also, that instability wasn't in turns, the problem was riding straight, it required very significant more concentration to just follow a white road line, and when going up (ex bridge) it became impossible to stay on it.
I remember that during my first test ride from dealer shop and back to it that I felt uneasy/nervous - the bike gave me an unsafe feeling.
Now adding at least 3 kilo on top of the rear rack, and the problem vanished just like that.
Because I always use the top of the rear rack too for a basket with stuff in and on top of it (see my avatar pic, what is under the red travel case), I coincidently discovered that the experienced problem went with it.
Not that I say anything here that I didn't say before.

What I reported in my last post was that the out of center wear of the rear tyre, that was the case for 7 years / 7 tyres, driving me to flip the tyre in order to chew out some more months, went by replacing the frame.

And as also said, to check if that instability is/was? also related, I have to remove the basket and stuff on the rear rack, and do a test ride, which I will do when I have the chance, because things are tied / strapped together with inner tyre pieces and belts - it's some work and I use this bike daily for some hours.
So I will report back then.
There has been something wrong with the initial frame as delivered, as now proved with the new frame.
So the new frame has an unexpected plus: no need anymore to flip the tyre due to asymmetrical wear in order to reach 1 year life.