scotthldr

Hi all, New member here so please excuse if posting this in the wrong place. I’m very close to buying my first BMW but one thing is playing on my mind, the tyres. The car in question is a 18/68 420d M Sport Xdrive. The car seemingly had the optional 20” alloys fitted at the factory (although I can only find mention of the std 18” or upgrade to 19”) however it is 20” rims that are on it. Fronts are 225/40/20 Rears are 255/30/20 which makes sense, but I’ve noticed it’s Pirelli’s on front and Dunlop’s on the rear. Now I’m assuming that the car never left the factory with that combo and the cars mileage is 12600, so in my experience wouldn’t be due new tyres so soon and if it did then why mix manufacturers when BMW and tyre manufacturers recommend that all four corners be the same make, tread etc, especially on a 4 wheel drive. I’ve also just learnt that 3 wheels have been curbed(in one year, really) , do I smell something iffy here or just over thinking the worst? Scott