New tyre purchased but not mounted on the vehicle
New tyre Purchased and mounted but changed after few days of usage
Exchanging of tyres with less that 50% of tyre life utilized with tyres nearly worn out and nearing end of life.
Changing the tyres earlier than the actual expiry where the vehicle owners workshop colluded with the tyre supplier to increase the movement of tyres with the customer.
Use of sample tyres as cash purchases made for on road repair of tyres.

Give old tyres for remodeling and sells it outside
Replace remolded tyres for new tyres which can be sold outside
Move remouldable tyre to disposable status to be sold discreetly to scrap buyers.

Selling of scrap tyres at lower than market values