Thanks guys this is super helpful. Really appreciate it.
Makes sense to me that with xdrive the two tyres need to be the same. I have explained this to the dealer this morning. They advised again that the car has not been in any accidents and that on the Dekra Report, the suspension was checked and is (Very Good), meaning it has never been damaged.
They also advised the back tyres are the same profile and has the same speed/load index of 106Y which should not cause an issue? They are not willing to replace the tyre but are offering me a 2 year Innovation Group Warranty on the car.
What would be my best solution, buy the car and put a second hand Michelin Latitude with similar tread? Try sell the Dueler etc?
So in all honesty, the Innovation warranty will be around R7000 - cheaper than a set of new tyres in the rear.
If you can get under that car and check the suspension for yourself, it would be good OR even take it to BMW to get a quality check it would help.
At the end of the day, what you cannot see, you cannot trust unfortunately. You do not want to sit with suspension issues later because it can get frustrating and pricey.
I reckon get a look under, get the quality check and if all checks out then get the car and change the tyres later on.
You can easily get tyres for the car for decent prices...many breakers are selling full sets as well for R20k. ie. Rims and tyres with decent life but priority, check it out under.
In terms of tyres, I have the Latitudes and no complaints on them, and then you can even consider getting a set of Alenzas or Pirellis which come OEM on these X3s as well...they all drive very well.