If you want to use better UHP tires, you cannot get in 60 profile coz all UHP tires are only made up to 55 profile. But if you downsize to 195/55/15, then the sidewall is less by almost 1cm so your car height will drop by about the same and your fender gaps also I increased by the same 1cm which would look ugly. Can still use but not ideal I suppose. Better if you upgrade rims to 16' then use 205/50/16 tires. Other option is use 205/55/15 provided that your rims is at least 6jj wide but this tire size is more difficult to get.