Discussion
Hi all,
Forgot I have an MOT booked in tomorrow morning and two tyres are questionable. Could do with waiting until pay day next week to change them, so just wondering if they will pass for tomorrow.
The first two are a front tyre, some edge wear and borderline touching the 1.6mm markers.


This is a rear tyre, almost touching the wear marker.

I know that they need changing, and they will be changed. So please no lectures...
Forgot I have an MOT booked in tomorrow morning and two tyres are questionable. Could do with waiting until pay day next week to change them, so just wondering if they will pass for tomorrow.
The first two are a front tyre, some edge wear and borderline touching the 1.6mm markers.


This is a rear tyre, almost touching the wear marker.

I know that they need changing, and they will be changed. So please no lectures...
Edited by Knoxville2410 on Friday 19th November 16:47
Tyre Smoke said:
Top one is a definite fail.
The wear markers are at 2mm I think. The limit is 1.6mm over 75% of the tread. BUT there must be visible tread on the remaining 25%.
I'd guess the second one is equally a fail.
Couple of part worn to get you through the test?
That's really helpful, thanks.The wear markers are at 2mm I think. The limit is 1.6mm over 75% of the tread. BUT there must be visible tread on the remaining 25%.
I'd guess the second one is equally a fail.
Couple of part worn to get you through the test?
I am going to have to try and get them done in the morning I think!
Knoxville2410 said:
Tyre Smoke said:
Top one is a definite fail.
The wear markers are at 2mm I think. The limit is 1.6mm over 75% of the tread. BUT there must be visible tread on the remaining 25%.
I'd guess the second one is equally a fail.
Couple of part worn to get you through the test?
That's really helpful, thanks.The wear markers are at 2mm I think. The limit is 1.6mm over 75% of the tread. BUT there must be visible tread on the remaining 25%.
I'd guess the second one is equally a fail.
Couple of part worn to get you through the test?
I am going to have to try and get them done in the morning I think!
Edited by Pica-Pica on Friday 19th November 17:35
I'd bet a large sum of money that there's nothing wrong with your tracking, all BMW's seem to have a habit of scrubbing the outer edge off the front tyres, I had mine four wheel aligned last year and it's still worn the front tyres like the pictures above.
Also, FWIW, I've had tyres worn on the edge like that pass an mot but with an advisory, depends how picky the tester is I suppose.
Also, FWIW, I've had tyres worn on the edge like that pass an mot but with an advisory, depends how picky the tester is I suppose.
The law is 1.6mm over central 3/4 and visible tread on the remaining 1/4. Which will be the shoulders
But weirdly can pass an mot bald on the outside or inner edge.
Could always pay ya money and take ya chance or wait till they are changed as will very much depend on the mot testers view
But weirdly can pass an mot bald on the outside or inner edge.
Could always pay ya money and take ya chance or wait till they are changed as will very much depend on the mot testers view
shakindog said:
The law is 1.6mm over central 3/4 and visible tread on the remaining 1/4. Which will be the shoulders
But weirdly can pass an mot bald on the outside or inner edge.
Could always pay ya money and take ya chance or wait till they are changed as will very much depend on the mot testers view
That’s not correct I’m afraid. There doesn’t have to be any visible tread on the remaining 25%, for a car at least. That’s why a tyre that is bald on the edge can pass. But weirdly can pass an mot bald on the outside or inner edge.
Could always pay ya money and take ya chance or wait till they are changed as will very much depend on the mot testers view
Edited by Little Pete on Friday 19th November 21:27
stevemcs said:
Trouble is if at any point they are below 1.6mm they will be an instant fail and be classed as a dangerous defect do not drive. I can understand why you want to wait until next payday but they haven't just worn like that and you would have know3-4 paydays ago that they were needed.
Clearly they should have been changed a long time ago !Little Pete said:
shakindog said:
The law is 1.6mm over central 3/4 and visible tread on the remaining 1/4. Which will be the shoulders
But weirdly can pass an mot bald on the outside or inner edge.
Could always pay ya money and take ya chance or wait till they are changed as will very much depend on the mot testers view
That’s not correct I’m afraid. There doesn’t have to be any visible tread on the remaining 25%, for a car at least. That’s why a tyre that is bald on the edge can pass. But weirdly can pass an mot bald on the outside or inner edge.
Could always pay ya money and take ya chance or wait till they are changed as will very much depend on the mot testers view
Edited by Little Pete on Friday 19th November 21:27
As i said above that is what the law states feel free to look it up. But as I did also say to pass an mot it can be bald on the edges. it’s one of the oddity’s of the law and mot’s.
I’ve had the discussion before with an mot tester and had it explained to me in words of one syllable 🤣
But I am always happy to be educated
From the MOT manual:
The primary grooves of the tread pattern must be at least 1.6mm deep within the central three-quarters of the breadth of tread and around the entire outer circumference of the tyre (see diagram 1).
Either side of the central three-quarters of the tyre can be devoid of tread (‘bald’).
I would personally say the first tyre is a fail though. The bold bit isn’t contained to the edge. But, it’s all down to that particular testers opinion at that moment in time though.
The primary grooves of the tread pattern must be at least 1.6mm deep within the central three-quarters of the breadth of tread and around the entire outer circumference of the tyre (see diagram 1).
Either side of the central three-quarters of the tyre can be devoid of tread (‘bald’).
I would personally say the first tyre is a fail though. The bold bit isn’t contained to the edge. But, it’s all down to that particular testers opinion at that moment in time though.
shakindog said:
Little Pete said:
shakindog said:
The law is 1.6mm over central 3/4 and visible tread on the remaining 1/4. Which will be the shoulders
But weirdly can pass an mot bald on the outside or inner edge.
Could always pay ya money and take ya chance or wait till they are changed as will very much depend on the mot testers view
That’s not correct I’m afraid. There doesn’t have to be any visible tread on the remaining 25%, for a car at least. That’s why a tyre that is bald on the edge can pass. But weirdly can pass an mot bald on the outside or inner edge.
Could always pay ya money and take ya chance or wait till they are changed as will very much depend on the mot testers view
Edited by Little Pete on Friday 19th November 21:27
As i said above that is what the law states feel free to look it up. But as I did also say to pass an mot it can be bald on the edges. it’s one of the oddity’s of the law and mot’s.
I’ve had the discussion before with an mot tester and had it explained to me in words of one syllable ??
But I am always happy to be educated

Some testers will guess rather than refer to the manual, it’s why we used to have refresher courses.
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