I'm driving proton x50 (currently using continental UC6 215/55/18). I had replace aftermarket wheels (spec :18x8.5JJ Et+42 PCD5HX114.3). Currently I planning to change my 4 tyres. I'm looking for tyres that more grip in wet/dry. I had ask few tyres shop. They recommend me use 235/50/18. Kindly please advise what size of tyre should i get and any recommended for which tyre to get.