195/60 x 15 tyres have a diameter of 24.21". To get a 2cm raise, you're going to need at least a 2" increase in diameter.

195/70 x 15 tyres are 25.75", 195/75 x 15 are 26.52"

Useful tyre tool as an indicator - Tyre Calculator

"Y mae dafad ddu ym mhob praidd"
1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10