Does anyone know a place on the island where I can top up the Nitrogen in my tyres. The Mobil south of Nathon suggested Autoboy, but they seem to have closed up shop.

Coming from Bangrak beach road and going towards Chaweng via the Ghost road (Soi Bond Kai) after about a kilometer there is a large tire repair and mechanic shop on the left. It has a large blue machine in front with 'nitrogen' written on it. Might be worth checking out, if it's not too far from your place.

How much does it cost and is it worth it?

Nitrogen is less likely to migrate through tire rubber than is oxygen, which means that your tire pressures will remain more stable over the long term. Racers figured out pretty quickly that tires filled with Nitrogen rather than air also exhibit less pressure change with temperature swings. That means more consistent tire pressures as the tires heat up. Saves you fuel and saves ware and tear on tire side walls.

Nitrogen is an inert gas so does not react with other materials and it is less likely to change pressuer when the tires get hot and cold.

Better ride also.

Since the Nitrogen is dry, you don't get water in your tires as you do with air, so no rust or crosion in the tire, rim and valve.

Problem is avalibility! Every welding shop has a cylinder or two of Nitrogen, getting into tires is another thing!

Ohm Cars in Chaweng has it.

Coming from Bangrak beach road and going towards Chaweng via the Ghost road (Soi Bond Kai) after about a kilometer there is a large tire repair and mechanic shop on the left. It has a large blue machine in front with 'nitrogen' written on it. Might be worth checking out, if it's not too far from your place.

Thanks GS, I rarely travel the Ghost Road unless unavoidable but, as it turns out I need to go to Bang Rak tomorrow - just before a trip to Huahin on Wednesday, so this post is perfect timing.

Nitrogen is less likely to migrate through tire rubber than is oxygen, which means that your tire pressures will remain more stable over the long term. Racers figured out pretty quickly that tires filled with Nitrogen rather than air also exhibit less pressure change with temperature swings. That means more consistent tire pressures as the tires heat up. Saves you fuel and saves ware and tear on tire side walls.

Nitrogen is an inert gas so does not react with other materials and it is less likely to change pressuer when the tires get hot and cold.

Better ride also.

Since the Nitrogen is dry, you don't get water in your tires as you do with air, so no rust or crosion in the tire, rim and valve.

Problem is avalibility! Every welding shop has a cylinder or two of Nitrogen, getting into tires is another thing!

As 78% of the air you put in your tyres is Nitrogen any way the average joe public will get no or very little discernible benefit from doing so. yes a little may leak out over time but just how hard is it to simply pump up the tyre ?

Total waste of money for passenger car applications.

Nitrogen is less likely to migrate through tire rubber than is oxygen, which means that your tire pressures will remain more stable over the long term. Racers figured out pretty quickly that tires filled with Nitrogen rather than air also exhibit less pressure change with temperature swings. That means more consistent tire pressures as the tires heat up. Saves you fuel and saves ware and tear on tire side walls.

Nitrogen is an inert gas so does not react with other materials and it is less likely to change pressuer when the tires get hot and cold.

Better ride also.

Since the Nitrogen is dry, you don't get water in your tires as you do with air, so no rust or crosion in the tire, rim and valve.

Problem is avalibility! Every welding shop has a cylinder or two of Nitrogen, getting into tires is another thing!

I very much doubt "Every welding shop has a cylinder or two of Nitrogen" as realistically the only place it holds in a welding shop is for purging when welding stainless steel tubing.