I have read a lot of comments relating to people experiencing vibrations at around 90-110 kph. I think a lot of owners don't realize, or aren't aware that AT tyres are not always inspected for perfect roundness - unlike for example low profile high speed rated tyres fitted to BMW, Ferrari, Porsche etc. simply because the tyre constructors done envisage or design the tread patterns or envision them being driven at high speeds, this especially applies to aggressive tread tyres (muddies).
When way back in the 1960's when I worked at Aston Martin Lagonda at Newport Pagnell in Buckinghamshire after the wire wheels were laced and checked to be perfectly round and the knock-on spline inner flange perfectly square to the wheel rim edge the inner-tube and ( generally Dunlop ) tyre would then be fitted and inflated and before being balanced the wheel and tyre assembly would be put on a special lathe and the tyre machined to be perfectly round, I've seen as much as 2 mm of rubber removed from high spots and quite often once this operation was completed no balance weights were required.
I believe that Rolls Royce and Bentley still carry out this operation.
So, if you have had All Terrain tyres correctly fitted with the red and yellow spots correctly aligned to the tyre valve ( Stuart did a explanation of this elsewhere so I wont ) and you are still experiencing vibrations between 80 - 110 kph, get the tyre(s) checked for being perfectly round and if necessary machined or learn to put up with it.
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