My car is modded with every bolt on imaginable and still I can't go any faster. What can I do to improve my car's performance?
One of the most important and often overlooked aspects to a car's performance is weight, both sprung and unsprung. Sprung weight is everything supported by the springs (engine, body, trans, etc.). Unsprung weight is everything not eupported by the springs (brakes, wheels, 1/3 of the control arms, etc.). While reducing any weight is a good thing, reducing unsprung and more importantly rotational weight is HUGE!
The old saying goes that for every 1 lbs of rotational weight you reduce you will equal the loss of 10 lbs non-rotational weight and a 10 lbs weight savings is like 1HP. So where can you lose the most weight without going to exotic parts and remortgaging your house? Wheels and tires. There are numerous lightweight wheels out there that can save anywhere from 10-20 lbs per wheel off the stock weights. Add to that some lightweight sticky tires and you have close to 100 lbs weight savings in rotational mass. Of course as more weight is trimmed the formula tends to get skewed, but you deffinately notice a difference.
Lighter parts will allow for better handling, less wear on drive train, brake, and suspension parts, improved stopping distances, faster track times, and of course better gas mileage.
So the next time you are debating over those 20" chrome "Blingster" wheels are that set of 18" OZ superleggeras, think about what you are using the car for and if you want to add or lose performance. |