It would be interesting to see a before and after dyno to see how much whp you lost . You've increased the rotating mass and diameter significantly on the drive wheels . You will need to install larger brakes to maintain oem stopping distances which will cost further whp losses . With the increase in unsprung weight you will probably start to notice handling issues as the oem struts and springs become overstressed .
yeap thats true thats why i ordered Brembos Grand turismo brakes, and the handling still pretty good , but i would keep in mind the springs stuff , so far i havent notice anything abnormal , but thnx for the warning
The wheels by themselves look good, but just a little bit too big on a Forte....I think the best fit is 17" to keep your handling as stock as possible, but I also think 18's aesthetically is the best looking fit, but then you are losing some handling I would suspect. I am actually torn at this point between 17's and 18's. Will 18's raise the car any? I can't stand these cars in the hood I see with 24's...Its God awful!!! Reminds me of the days with the Toyota pickups with the 12" dayton spokes sticking out a half a foot from the car. Just as bad!!!
The only thing that matters is that this is your car, not anyone else's so if your happy with it than that is all you should care about.