You would want to specify "ball seat" or spherical for the OEM wheels. Most aftermarket wheels are "cone seat".
I don't know the length you want, you'd need to understand how "thick" your wheel is at the hub. The knowledge I'm sharing is from my messing with track studs. I'm running a 65mm stud, but that dimension is more or less meaningless to your Q.
I think most folks just pull out one lug, and assuming you're happy with it, you measure the length and buy similar again.
Originally Posted by petef
... you have no way of knowing whether the previous owner(s) was a civilized driver or a hoon like Peach.
Originally Posted by Dave Barry
Wouldn't "Hoon Like Peach" be an awesome band name?
Thanks mr.peach for the knowledge. Btw i know stock bolts is 27mm ..since im running on a aftermarket wheel (18x8) which is 0.5 INCHs wider than stock wheels. My question is should i buy a longer lug bolts like 32mm?