2 x NEW Pirelli Pzero PZ5 MO-S PNCS Tyres. Size 285 40 23 (107Y). These tyres are NEW with labels still attached! These are MERCEDES approved tyres, with the. MO-S’ symbol stamped on the sidewall from the production factory. However, these tyres would be perfectly suited to any vehicle requiring this size. Collection is also available from Manchester City Centre.