First of all, I'm sorry that it took me so long to reply on my own thread, for some reason LOD would not load for me for like two and a half days! Actually, it still won't load, but our esteemed head moderator sent me a link to go straight to the forums, so here I am.
I didn't know about the yellow tipped stud thing, I'll check that, but I don't think they are visible cuz I feel like I would have noticed that.
I did not have the tires remounted / rebalanced. They are unidirectional, and I didn't think it would be an issue, maybe it is?
My entire front suspension was recently replaced (see "Suspension Nightmare" thread). Ball joints, control arms, sway bar links, and all front bushings were just done in December.
Roadboss sent me a brake break - in procedure, I'm gonna try that. However, I think it is more likely that I didn't clean the hub mounting surface well enough. I DID clean it, but it was kinda rushed cuz it was done outside and it was getting dark. If that was the case though, wouldn't it vibrate all the time? Like I said, it only vibrates at over 75mph or so, and then as soon as I brake down to below that speed, it stops for the most part, and below say 45mph, it stops altogether, even if I'm still on the brake to a complete stop. Who knows what exactly it is? I think sometime this weekend, I'm gonna take the wheels back off, repull the rotors (hopefully they come off easy this time!!!), clean the hub mounting surface, and try to locate these mysterious yellow studs and remount the wheels accordingly. After that , I'll do Charlie's break in procedure. I hope that plan of attack will work. Like I said, the brakes operate AWESOME, but obviously a high speed vibration is unnerving at best. I'm thinking that the wheel swap may just have come at a time (i.e. during the brake job) that throws some suspicion on them as the culprits for this vibration. If all the above doesn't work, I'll either put the rims back on backwards, or maybe go to the nearby high - speed balancing shop that Steve mentioned. I'll keep everyone posted, but I think semi - dirty mounting surfaces are the real bad guy here if it's possible that that issue might cause only vibration above a certain speed and only when braking. Seems to me that something like that would cause constant vabration all the time, at all speeds, on the brakes or not. But hey, what do I know? Not much obviously, if I neglected to do it right the first time!!