Pound the old ones out with a hammer and punch.
You may need to rotate the hub to a point where the new ones will fit through the holes. Note: that there is a shoulder right under the head that is larger in diameter than the threaded part of the stud. Stack a few washers over the stud, with holes large enough that the shoulder will not get caught on the washers. If your lug nuts have chrome caps, find a different, standard nut with the same thread pitch. Install it backward so the flat side contacts the washers. Use that to draw the stud in. It is okay to over-tighten the nut a little, but too much will peel the threads and ruin the new stud. If you can sneak a small hammer in there, tap on the head of the stud to help it fully seat.
Most import vehicles use anodized studs. Those have an electro-plating that is a lubricant. They will be a light blue, yellow, or silver color. Do not use any grease on those as that will eat the coating away.
Always use a click-type torque wrench when tightening the lug nuts. If the old studs broke because the lug nuts were loose, the mating friction surfaces on the wheel and nuts will be damaged, so the wheel and lug nuts must be replaced. If the lug nuts were over-tightened, there's a good chance the wheel is chewed up so the new lug nuts will not remain tight.
Tighten the new lug nuts to 95 foot pounds if you have steel wheels. If they are cast wheels, stick to 85 foot pounds.
After driving the vehicle for a few dozen miles, forces acting on the wheel will pull the studs in tighter which makes the lug nuts loose. Check them again with the torque wrench. The specification for your vehicle is pretty broad. It calls for 80 to 101 foot-pounds. I would stick with 95 foot-pounds.
Friday, February 16th, 2018 AT 7:10 PM