What is the FRSC offence code for 'Expired/Without Spare Tyre', and how does it differ from a worn-out tyre violation?

1. Code EWT (2 penalty points); it refers to lacking a functional spare tyre or having an expired spare
2. Code TYV (3 penalty points); it refers only to the spare tyre's tread depth
3. Code MDV (5 penalty points); it refers to mechanical vehicle defects
4. Code SLD (3 penalty points); it refers to speed limiting devices