Guys, the rear tyres are shot on the wheels i got fitted atm. The size is 205/50 15. The only thing im going to be unable to get is two good tyres for August

Now the oem wheels i have have got nearly new 205/55 15 Yokohama tyres on them. You think it will be ok to mix the 50/55 profile

Or should i swap all 4 over:?
cheers