Hmm these few days when i am driving, i notice that i will hear those "wind rushing into the car " sound coming my driver's door/window leh.at first i tot is the window not winded up properly.. but after checking >> no problem leh...BUt i still get those sounds (sound like wind rushing in) once a while leh. After a while it will disppear then come back again leh..This occurs when i am driving on Xpress way and CT leh...i have checked the doors leh.. no problem with closing. Windows checked>> winded up properly..any other possible causes???
Definitely it is the visors which causes the noise and thus more wind drag. You may not get the noise when you first install it but over time, parts of the visors gets loosen a bit which cause the noise. My understanding is that only the expensive original visor >$100 will not get any noise as it is secured with a custom-designed clip and 3M tape. For this reason, I am not installing any visors for my Latio until I find it necessary, because I also have similar problem with my previous ride.
Mine was original fr TC, been using since day1, not sure if the sound is noisy, but seems acceptable to me or i can say no noise even at high speed. When at high speed (eg. NSH), engine noise seems noisier, soundproof not so good..
Sorry ah, but I've always wondered what the visor is for.
for me i think it block sunlight,the rays dun glare my eyes, cosmetic purposes, i can partially wind down window allow air t come in without messing my hair. for smoker during raining days u can open alittle t let the smoke escape out of car during rainy day, u dun get too wet. it suppose t reduce wind resistance too but hw true or hw well it work i m not v sure thou.