Regarding wheel size, my GUESS is that TATA went from 165/65-R14 for the DLG/DLX to 165/65-R13 for the newer DLS after receiving complaints about the handling characteristics of the DLG/DLX. In other words, I don't think that the more powerful DLG/DLX have optimal tyres, given that the lower rim dia was preferred for the DLS version with the same tyre width and profile.
Secondly, one reason for the reduced power output might be that the DLS has a more optimized fuel economy and maybe improved emission standards. It would be interesting to see the peformance details (0-100, top speed, etc.) of these variants.
Regards, rks |