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[CaptainZok]

Mot regs are 1.6mm across the centre 3/4s of the tyre and around the circumference.
The inner and outer edges can be devoid of tread as long as there is no cords or ply showing. The 1.6mm limit only applies to groves that are as deep as the ones with wear indicators (some tyres have raised tread on edges) when new.  So you may be ok. If the tread has been recut it is a  fail.
Lee

I seem to recall a mate of mine, years ago, having a heated tool to re-cut commercial tyres, in this case on coaches..........

Different animal Vamps, you can recut commercial tyres as they are designed to be recut.

[Vamps]

Mot regs are 1.6mm across the centre 3/4s of the tyre and around the circumference.
The inner and outer edges can be devoid of tread as long as there is no cords or ply showing. The 1.6mm limit only applies to groves that are as deep as the ones with wear indicators (some tyres have raised tread on edges) when new.  So you may be ok. If the tread has been recut it is a  fail.
Lee

I seem to recall a mate of mine, years ago, having a heated tool to re-cut commercial tyres, in this case on coaches..........

Different animal Vamps, you can recut commercial tyres as they are designed to be recut.

 

[Seth]

Mot regs are 1.6mm across the centre 3/4s of the tyre and around the circumference.
The inner and outer edges can be devoid of tread as long as there is no cords or ply showing. The 1.6mm limit only applies to groves that are as deep as the ones with wear indicators (some tyres have raised tread on edges) when new.  So you may be ok. If the tread has been recut it is a  fail.
Lee

I seem to recall a mate of mine, years ago, having a heated tool to re-cut commercial tyres, in this case on coaches..........

Different animal Vamps, you can recut commercial tyres as they are designed to be recut.

 

'Cos these tyres are clearly embossed 'Regrooveable'
 

[CaptainZok]

If I remember correctly a truck tyre only has half the tread depth from the factory. If they were sold with the full depth of tread the blocks would wobble about and be unstable so they're grooved to half depth and when that wears you cut the rest of the tread yourself following the original tread pattern or get your tyre man to do it for you.