Is there a specific lug nut that I need to purchase or does one fit all? I lost one somewhere
Actually I would rather replace all of them while I'm at it.....

 

I believe they are M12x1.5

Since the wheels are lug-centric they may have a shoulder (like the stock nuts) but I think the ones I got with my new alloy wheels just have a bevel that centers the hole on the lug.

 

Not any lug nut will fit. You need to buy the specific size--if I recall, I think Toyotas have 12mm x 1.50. You can call your local dealer ship (or check an FSM) for the size lug nut you need.

 

take this time to get yourself a set of locknuts

prevents you from tire/rim theft and practical jokes on april fools day

 

Just remember where you put the key for the locknuts... I lost the key and a few days later, my tire looked like a fat black sumo wrestler laying down on my driveway...