Just scored a great deal on 4 - 1994 alloy wheels (model 3008?) with new tires. Want to put them on my daughters 1998 explorer sport, same size wheel and tire. I noticed on the new alloy wheels that there is a countersunk hole on the side that mates to the hub. Her original wheels were steel with chrome inserts. Do I need to get a washer or spacer for this countesunk hole or just use the lug nuts and snug up to 120 ft/lbs. as usual?