Does anyone know where I can get a tire fixed and a service done in the Nana area? Anywhere from nana to asoke is fine if there is anything close please let me know.

There's a tyre place around the back of McDonalds on the corner of soi 4(Nana). I'm not sure if they can do any service though. There's not much in that area as rents would be very high.

At Asoke junction take the road to Rama IV. You can go either left or right onto Rama IV and there are a few little garages there and motorcycle dealers.

The locals where you stay, especially the motorcycle taxi drivers, would know, if there's anything else around that area.

At the end of Soi 4, before you get into the tabacco property, there is a bike shop on the left. Assuming your talking about a click or small asian style bike.