@Benjamin ********
Actually he's right. This 90-day thing is an internet myth that is thrown around, loosely based on the notion that a "tourist entry" used to be limited to 90 days. There's nothing in Thai law which states 90-days. Under the Geneva Convention, reciprocal agreements exist. For example, a Thai licence holder can drive on their Thai licence for up to a year in Australia whilst on a tourist visa. The 90-day limit applies if the person becomes a permanent resident. So the condition is reciprocal, Australians can drive in Thailand for up to a year (provided their Aussie licence is valid). I urge you to steer clear of Visa Agents, they are known to spread misinformation in their pursuit of money