Why i only 180deg of the inside of my tyre worn?

[JackP1]

Need to clear up a bit of confusion here, as i just can't think why this would happen.
Had tyres changed tonight for a new full set. Same model as the old ones ( too T1-R's ) had the set about 2 years and done around 16k
O/S F + R had good amount of tread left on them, NSF was down to the markers and Rear had a chunk out of the protector part of the tyre and would no doubt be an MOT Fail and generally wouldn't think was road worthy. Got the two good tyres home tonight and looked at them finding this on the OSF Tyre...

Front tyre


90Deg rotation



180deg Rotated



RH side of tyre, even tread wear.



LH side of tyre. Noted its not even tapering off, its almost shouldered.



180Deg of the inside is fine, the other 180Deg is massively worn down.

If the tracking was out it would all be worn, the only things i could think off would have been a flat spot on the wheel or wheel out of balance, but in two years i would have most definitely noticed, even with some steering wobble or vibration or something. Tyre pressures are regularly checked.

Anyone got a better answer/idea?

[JackP1]

Defcon5 said:

Tyre sidewall collapsed?

Had a quick look inside but will double check tomorrow, surely i would have noticed whilst i was driving?

[JackP1]

ShiningWit said:

Was the car stood for a long period of time at all?

Nope, used daily.

[JackP1]

a couple on each wheel, nothing extreme!