Is the Thai tourist visa still 30 days, and what is the maximum extension allowed?

Had you actually bought a visa in your country, you would have gotten 60 days, with 30 extension possible.

But you went for the free 30 day option, or Visa Exempt' no visa at all

you got your wires crossed a bit

Tourist visas were NEVER for 30 days 😮

A tourist visa is something you BUY at a thai consulate before you wing your way here and it gets you stamped in for 60 days when you arrive.

You're talking about the '30 day free entry' (visa exempt) stamp. You get depending on your passport nationality when you show up here without a visa.

You can extend that 30 day entry stamp ONE time for 30 more days. Then you're done.

It's not the thai officers at passport control when you stamp in who are gonna have any problem with your onward travel 59 days from the date you arrive.

It's the air carrier who will give you grief (if anyone will) about it because some carriers have a proof of onward travel within the days you'll get stamped in for" policy when you come to thailand without any visa (entering on a free 30 day visa exempt stamp).

CHECK with your air carrier to see what their policy is. If they say you can fly in with the tickets you have you're fine once you hit the ground here