Indeed it is 17 mm.
Although you would expect a metric size for a Hyundai, I'm noticing that
most domestics also have mostly metric sized bolts and what have you.
It has gotten to the point where I rarely if ever use my SAE wrenches,
sockets, etc., but am constantly using my metric ones.
If one wants to buy a set and has a choice, any more it seems a no-brainer -
you almost have to get metric.
Wow, I just went out and got a 17 mm and it's too small. I wonder if
these are aftermarket wheels on this SantaFe. 22mm was slightly too
big, so I'm zeroing in on 21 mm. I hope it's not SAE. Very strange.
Thank you, both.
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