as its a constant 4x4 tyre pressures make a lot of difference with no load ie full car running the lowest tyre pressures the same all 4 wheels is good way to get tyres to help damp out the bumps very hard pressure will make any car crashy and loose grip as well, also tyres not all tyre makers use same amount of plys and rubber compounds so harder on rear soft on front can cause center diff problems with age so car tyre pressures, also if have worn out tyres on the front and new one on the rear its not good will wind up drive line, the bmw x drive systems as known for it the stepper motor fails then the drive line knocks when turning corners or on other designs with a centre clutch wet pack ie bit like a motor bike clutch it induces wear a lot faster.. rule of thumb with 4x4 is everything must always be equal
Posts by mike1967
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its funny how a tiny bit of toe out will sort a twitchy car outUpdate - all wheel alignment fixed the issue!
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