I have 6 speed manualI am assuming you have a cvt. Big/heavy rims/tires are a very very bad idea. The more unsprung weight that the cvt has to turn, the shorter the life of the transmission. IF you increase the over-all diameter of the wheel you are also messing with the wheel speed which can cause the cvt to do some very very strange things.
I'll be careful but I'm still curious if the wheels and tires will fit the off set is what has me concerned will I rub a stock height or anything like thatokay, with a six speed you will be changing the wheel speed sensor readings which can change the way the ABS works. BE CAREFUL.