Wheel stud size??
With any wheel stud change, it is always best to find a reputable tire shop, and have them decide what is best. I have seen guys do lots of stupid things with studs, and safety was not ever a factor.(myself included). It's worth the extra few bucks to have it done right.If you still want to do it yourself, knock one out,check it with a Vernier gauge,and order accordingly. Sometimes longer studs require the hubs to be drilled out a bit.