The lug bolt pattern (non metric size) is 6x5.5".

The thing about gen I Montero's is their center hub diameter is pretty big (I recall there was a measurement somewhere) so many that would otherwise fit may not. It's best to check that before you buy them.

I know on mine all the aftermarket aluminum rims have been a very tight fit and some that looked like they'd fit did not fit at all without some Dremel work to clearance the hole.

Also, I've found a very tight fit for lug wrenches into the lug bolt holes in aluminum rims. Have had to resort to using a very thin walled socket with a ratcheting wrench versus an air gun to remove the wheel lug bolts/nuts.
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