Hi all.

My wifes car failed it's MOT because someone put a different size tyre on one of the back 2 that i had changed. She went back and got it replaced but I've just checked them and the new one is now a ZR19 instead of R19 and I also noticed the 2 back tyres that they changed are W and the 2 front tyres are Y. Here are the exact size and ratings.

Rear tyres

245/40R19 94W

245/40ZR19 98W

Front tyres

245/40R19 98Y

245/40R19 98Y

So my question is (a) will they pass the MOT now as they're at least all the same size, and (b) should I be changing the back 2 so they are both R19 (instead if one ZR19) and do they both need to be 98Y like the front two tyres rather than one 98W and one 94W.

I would really appreciate some advice please. The car is an F11.

Cheers.