Feels like tires vibrates between speeds of 80km and 100km

HAVE THE TIRES BALANCED AND CHECKED FOR SEPARATION

I have an 02 tt quattro with a vibration at 70-85mph. Thousands have this problem and no solution. It's not the balance,tires,rims,control arms,tierod ends,alignment,wheel bearings,hub,or rotors!!!! I replaced my right front axle that was bad and half the shaking went away but it's still there just not quite as bad. One person changed the steering rack and solved his problem so this could be the solution but you'll wanna be 100% sure because it's pricey. With nearly every TT owner and some other models affected by this problem you would think Audi would get off their arses and come up with the solution so people will stop wasting thousands replacing all the parts above for no reason and still have the shake at highway speed. If anybody has come up with the definite solution let me know my email is [email protected] thanks

Its likely to be the balance of the wheel, Also check the rims as they could be buckled or bent, tyres for separations,

There are 3 possible problems,
1.a bad tire,a belt in the tire has separated and caused the tire to become slightly unbalanced
2.One of the tires is slightly out of balance.
3.Your front alignment needs to be adjusted.