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I've just had pilot sport 4 s fitted all round.
The fronts are the bmw star marked ones and are 225/40/R19
The rears I couldn't find the bmw star marked ones anywhere so got the non star marked ones which are 255/35/ZR19
It looks like the rear star marked ones are z but the non star marked are zr
This means I've now got z in the front and zr on the rear.
Does anyone know if it matters?
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