I belive Civic can not handel up 245 tires , And these tires as I belive will not allow your car to turn 5 degree corner which it's mean you will just be able to drive in a strate line
,,, I ask some pro tuners , which they tell me best fit for civic rims + tires is ,, 205/45/16
civic will be able to handel 205/45/17 but you will not get some turens perfactly
for best car handeling go for 205/45/16 , , Which I'm going to fit on my civic very soon , take in car , bigger tires will effect your car preformance , so don't just go for it
I belive if your car is not modified yet , I preafre you put on a new exhust system + headers for an incress of Hp between 10 up to 20 hp ,, whic will balance your car preformance with the new rims + tires
ANd good luck
