Hi,
I have a mazdad cx-9 grand touring the manufaturer recomende tires are 245/50 R20
I had all the 4 tires installed new yesterday

I have found out that the tires installed in the front are not the same as the ones in the back
the front installed ones are 235/55 r20 and the rear ones are 245/50 r 20

I am not even sure weather it is safe to drive back to the dealership please advice.

Thanks
Supat