Sulfur hexafluoride is a powerful greenhouse gas of industrial origin. Remotesensing detection of this heavy species requires a detailed knowledge of its infrared absorption spectra that features many hot bands at room temperature. It is thus necessary to study many of its rovibrational levels which are implied in such hot band transitions. Based on our previous results reporting global fits of many rovibrational bands [M. Faye at al., J. Quant. Spectrosc. Radiat. Transfer 190, 38-47 (2017)], we present here detailed analyses of three combination bands, namely ν 1 + ν 4 , ν 2 + ν 6 and ν 5 + ν 6. The ν 2 + ν 6 combination band has been already investigated some years ago, but the present analysis represents a strong improvement; the two other bands are analyzed in detail for the first time. The results contribute to improve the simulation of hot bands in the strongly absorbing ν 3 and ν 4 regions and they have been used to update the SHeCaSDa database (http://vamdc.icb.cnrs.fr/PHP/shecasda.php).