W212 tyre size R18
but Width of tread is between 265 and 285 of 20mm is tad more then 3/4" and could hit things on suspension as it travels up and down.
Or tire sticks out too far and does not pass Gov Requirements of being inside fender lip.
245/40/18 OD = 25.72"
265/35/18 OD = 25.30"
285/35/18 OD = 25.85"
Do what ya want though.
I will say the wider the tire the greater the chance of wearing unevenly with Camber out of whack a little bit.
but Width of tread is between 265 and 285 of 20mm is tad more then 3/4" and could hit things on suspension as it travels up and down.
Or tire sticks out too far and does not pass Gov Requirements of being inside fender lip.
245/40/18 OD = 25.72"
265/35/18 OD = 25.30"
285/35/18 OD = 25.85"
Do what ya want though.
I will say the wider the tire the greater the chance of wearing unevenly with Camber out of whack a little bit.






