I am looking to buy some alloys ! Thinking of 18s and was going to leave standard suspension on it, But the only thing is i will be towing my car trailor with my race car on it (about 1600kg). Has anyone towed anything of this size with standard suspension on ?? Was there much sag on the rear end ?? And will it be ok and still a smooth ride towing with big alloys on? Any answers or experiences please !!