Giti Synergy E1 is a summer tyre made in total of 19 sizes, ranging from R14 to R14 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. This tyre profile of 65 means the sidewall height of the tyre is 65% of the tyre width (185mm), which results in 120.25mm sidewall height. In 185/65 R15, there is only one possible speed index for Giti Synergy E1 - "H", which is good for speeds up to 210 km/h. In 185/65 R15, Synergy E1 usually competes against Speed-Life 3, which is a tyre from Semperit with a rating of 47%, compared to 0% of the Giti in question. Latest test in 185/65 R15 was held by ADAC in 2019, where Synergy E1 received rating "Satisfactory" and finished on the 12. place. It was tested on a Volkswagen Golf.