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Can anyone confirm that these Dunlop Tyres are the correct ones to use for the XJ 2010 V6 Diesel, I had two rear Dunlops fitted 9 months ago have done 7,000 miles mainly motorway cruising and they failed the MOT having worn down to wear bars?

I do not drive or brake hard, no towing,

Best Regards RPM

Best and simplest site to find tyre options for your car is to go to the Kwik Fit website. Not saying buy from Kwik Fit, just that they have a very easy to use tyre locator. Simply go to the website, click on tyres and then enter your registration number and postcode to see a list of options.
Not sure of the rating for the Sport Maxx GT tyres, but I would have thought they should do better than 7,000 miles.
Jim Mann

{EDIT}
That doesn't sound good! Wearing "down to the bars" should not be an MOT fail as the bars are at 2mm tread depth, so a little in hand before the 1.6mm legal minimum, unless you've gone below that.

I don't know how similar the weights are between your later X351 XJ and my 2006 X350 XJ Sport Premium, but for comparison I have run several sets of Dunlop Sport Max RT2 tyres in 255 x 40 Z19 size. I believe these are a softer compound than your Max GT compound, but are rated 100Y rather than the usual 96W or 97Y so are 'heavy duty'. I rarely get less than 15,000 miles from a rear pair and 20,000 or so from the fronts. What pressures do you run them at? Are they worn evenly across the whole tread width?

Probably a bit late to be of any help but I have Dunlop Sport Maxx GT tyres (19 inch) on my X351 3 litre (petrol) and they have still got a reasonable amount of tread after 26500 miles.