Knowing that Thai quality is usually shite I bought a tyre inlator from the UK. It was a Ring Automotive RAC600 12V Automatic Digital Air Compressor and came recommended by 'What Car' magazine.
It was completely useless at inflating tyres, but great for the kids birthday balloons. It packed in after about 8-9 times of using.
My question is, are there any decent models in Thailand that can be recommended ?