Ford Probe Owner's Manual page 178

Lug nut positions
3. Replace the flat tire with the spare tire.
4. Replace the lug nuts and tighten snug. The
beveled edge faces inward. Do not fully
tighten the lug nuts until you lower the
vehicle. If you do, you could force the
vehicle off the jack.
Your vehicle has been built with metric (12 mm)
threads on the wheel studs and lug nuts. Make
certain, during wheel removal, the same nuts
removed are reinstalled, or if replaced, nuts with
metric threads and the same chamfer
configuration are used.
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