Questions on modding an Optra notchback

[niky]

Hmm... can't answer that, I'd have to see it to reply.

You could always just black out the chrome and cut out the plastic inserts, but destroying stock trim makes it difficult to return the car to stock when you get tired of the "modded" look.

Depended talaga yung consumption effects, ha. It's more dependent on the weight of the mags and width of the tires than on the size alone. I've had mags that absolutely sapped power from the car, and I've had mags that actually made the car feel lighter and faster than stock.

Generally, you lose maybe 1 hp for every 2 pounds or so heavier each new mag is over the stock one. A ten pound difference per mag-wheel combo might equate to a 5 hp loss, dependent on engine size.

EDIT: I've just looked it up... according to testing by Sport Compact Car, there's an apparent .4 hp loss per additional pound. (hehe... I was close!)

17" mags with tires typically weigh between 35-38 lbs (common ROTAs) to 40-45 lbs (for fancy ones). Compare this with a typical stock combo of about 29-33 lbs, and you have a possible power loss of 4-5 hp. Which may not seem like much, until you consider your car only makes about 80-85hp at the wheels... this loss translates to about 6 bhp at the crank. You'll really feel it slow down incredibly at launch, but it's less noticeable once you're at speed.

Medyo obsessive-compulsive ako about wheel weight. I take a scale with me to the mag shops. Basically, for combined wheel weight, take the weight of a 17" mag, then add 20 lbs (for the tire). For 15" or 16", add 18 lbs.