I have the SE 16" alloys and the OEM tyres were Michellins, they only had one product available at 185x50x16. I have since replaced them with Dunlop SP9000 of the same size. The odd size makes it expensive. I would suggest you take advise from others and get cheaper alternatives on different sizes. I might go for 195x50 next time, other members have had this size and it seems fine. It is slightly higher profile, which might improve the ride a little as well!