The tyres on the GB270 are 'MO' Mercedes Only fitment and are listed as such in the Pirelli catalogue (and not quite listed as the rating shown above - although this rating I know is correct and is how Pirelli list it on their Website) - I have a GB270 and they lasted 13000 miles including rotating from front to rear etc. Took ages to sort out replacement tyres as Subaru themselves did not know what was fitted - non 'MO' fitment Pirelli P Zero's have a different tread pattern and I had to read out all the writing on the sidewall to a local tyre mechant who was then able to source the correct tyres.

just a heads up if you replace with the same tyres - saves a garage getting in normal P Zero's or some such.

 

MO tyres are fine to fit to non mecedes vehicles . there is no difference in mo and non mo pirellis . its just mercedes being weird

 

But there are better tyres out there anyway so try something new.

Days in Chelmsford used to farm out the alignment and going on the settings when I had them checked it hadn't been done at all, even though I paid for springs and alignment at the time. Alignment isn't hard, most quality tyre fitting centres have the latest hunter equipment and will more often than not put on whatever settings you want within their capability.

 

there are much better tyres out there lol