Tyreman said:Ewazix said:Tyreman said:Two issues here, I do realise that I'm late to the party here though and it's irrelevant but here goes.
Do the tyres need replacing yes 100% without a shadow of doubt, most organisations recommend replacement at 3mm for good reason.
Should they have failed MOT, well based on the photograph no they should not "At least 1.6mm throughout a continuous band in the centre 3/4 of the tread and around the entire circumference" is the wording and the current tyre law in the UK.
There is no requirement for the tread outside of the central 3/4 as outside of the main water evacuation channels some features of the tyre will be designed to wear out quicker than the main tread pattern.
So the OP was correct in my opinion and the tyres aren't technically illegal, he has however done the correct thing by replacing them![]()
As you say the rule is min 1.6mm continuous band in the centre 3/4 of the tread and around the entire circumference, therefore you cannot have more than 1/8 of the width below 1.6mm ether side of the centre 3/4. Looking at the picture the bald band is clearly more that 1/8 (12%) of the tyre width so must be illegal.
Sorry the pedant in me wouldn't let it pass :wink:
You can be as pedantic as you wish sir but are ultimately wrong, the tread area which you refer to is outside of the water evacuation channels and has features designed to wear out prior to the main tread pattern.
Basically the sipes outside of the main tread pattern don't matter as per the law........the biggest issue is that most people including MOT testers haven't got a clue what they're talking about.
It's purely down to different peoples interpretation of a set of rules in a manual. :wink:
Ewazix said:Besides the 1.6mm 3/4 centre area limit, it's a separate offence to have any groove in the tread area which is no longer visible (s.27 1 f Con & Use Regs 1986) and since approx 20% band of the original visible tread/groove area on one side was bald as a badgers arse, it wasn't legal.

ph001 said:Ewazix said:Besides the 1.6mm 3/4 centre area limit, it's a separate offence to have any groove in the tread area which is no longer visible (s.27 1 f Con & Use Regs 1986) and since approx 20% band of the original visible tread/groove area on one side was bald as a badgers arse, it wasn't legal.
Trouble is you get road legal track oriented tyres that have quite limited tread patterns anyway, so who's to say? Are these brand new Michelin Pilot Sport Cup 2 bald as a badgers arse?...
Michelin PS Cup2.jpg
ph001 said:I didn't think you were being rude at all. My comment was also supposed to be very light hearted - I'm just playing devil's advocate here! I guess my point was that knowing if there should be tread pattern there or not may not always be clear cut. In practise I guess it is quite obvious.