It just never ends does it?

I guess in a way that's ok, because it gives me something to do that I really enjoy.

Put all new wheels and tires on the Dart and have a shudder type vibration starting at about 80 miles an hour, and getting more pronounced as the speed increases.
I recently twisted my driveshaft in half and had a brand new driveshaft built by a local shop that was recommended to me by multiple people.
All new right down to the yokes and U joints and guaranteed up to 600hp.
Brand new Ridler wheels (9.5 wide 20's on the back and 8" wide 18's on the front.)
Tires are brand new Nitto 245/40x20 and 225/40x18 and are rated at 180mph continuous.
Balancing done by the local Discount tire store.

Yesterday I checked my toe and it's right where it should be at 1/8 with poly front bushings.
Today I'm going to put it in the air, check for any lost sticky weights and run it to do a visual on the wheels and tires at speed.
If I don't find anything there I will put the front tires on the back and check again, even though it feels like it's originating in the back of the car. (steering wheel doesn't shake or vibrate)

The above should eliminate the driveshaft (the vibes are too slow for that anyway) as they are more at wheel speed.
Should eliminate the wheels, tires and axles as well, though I didn't have this problem before the new wheels and tires.
My old tires were only rated for 120 continuous, and I did hundreds and hundreds of miles on those at 80-90+ for hours, but I couldn't trust them at over 100mph for any length of time because of their speed rating.
Who wants to loose a tire at over 100mph?:eek:

I am running centric rings and they fit nice and tight on my hubs and wheel centers both.
Also have all new locking lugs.

I'm really suspicious of the tires themselves just from the feel of it, but we'll see.
Whenever I ask about precise high speed wheel balancing I get "The speed limit is 75 anyway" and that just kind of pisses me off more than anything else.:D
I want this car to be able to do 130 or better all day long if I want, and it's soooo close.:D


Anyway, we'll see.