I had a chance to see both cars this week end at the Northloop.
The GTS has more power, yes! But lighter ?? I donīt think so. Why?
The GT4 Series has (appart from windshield) Makrolon windows all round & is 6 spd stick shift The GTS is full glass and has a 40kg heavier DCT.
Both have titanium exhausts so not much difference there. GTS is BTW street legal the GT4 is not!
As for the rims: anyone with knowledge will tell you that the 18" rims are the better track performers 19" is more show.
Hope this might help
Cheers
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