Strange one here

My rear wheel is making a funny like rubber farty noise lol. It only happens once every revolution say every time 12 O'clock hits the ground. I've checked the wheel is tightly bolted on and for free play, everything ok there.

Took the wheel off, checked for binding brake, ok there, the rotar is secure and running true.
Checked the movement of the suspension all ok.

Checked tyre pressure that was ok, however tyres are worn near to the wear indicators, but still a fair bit in the tread yet. I put the wheel back on and spun the wheel looking at the tyre outside edge to see if there was any warping, but to be honest I could not tell without a measuring tool.

I will Mark the wheel and tyre to see if the tyre is slipping on the rim, after that I've not got a clue, I'm thinking there is a fault with the tyre but not sure, has it happened to anyone else.

Take it to HECTYRE the guy callum in there is very good and will probably tell you straight away what it is