Originally Posted by Kingmidas87
Yeah I'll prob just have to get new ones
---------- Post added at 02:32 PM ---------- Previous post was at 02:28 PM ----------
You think that changing the drag coefficient has a big or small effect on gas mileage? And would lowering the car aid that?
If you lower your car 2 inches front and rear your drag will decrease more than you can possibly comprehend.
I had to say that, but you obviously already understand this, otherwise you never would have asked the question. For those unaware, the amount of air tumbling and swirling underneath your car slows you down! Just a 1 inch drop from a stock suspension will make a difference, a 2 inch drop??? HA! slippery like nothing else! It effects MPG, acceleration, top speed, and even handling.
Look at it like this... does NASCAR hug the asphalt? Ummm Yup... they almost scrape the ground in an effort to minimize turbulence under the car.
Want to go further than that? Use clear packaging tape and tape across all of the gaps between body panels, such as hood to fender, fender to door, door to rear quarter panel, rear quarter to trunk lid.
Don't believe me? Try it yourself. As odd as it may be, the gaps between body panels create a LOT of turbulence in the air flow around the car.....
Wheel and tire combinations make a HUGE HUGE difference in performance. Tall wheels with low profile tires may look badass, but in reality they hurt you for everyday driving. I went from stock 15's to P245/45-17's and gained EIGHT POUNDS PER WHEEL! That is a HELL OF A LOT of rotating mass to get moving, and keep moving... doing the wheel/tire swap cost me 1-2 mpg.
If I went back to my 15's with good tires I would be at mid 20's in town and consistently low 30's highway MPG. If my Bullitts from AM didn't look so damn sweet I would swap back to stock...
Side note: went to a funeral today, ran 85-90 mph down (175 miles) and ran 70-75 mph on the way home. I filled up before I left home, and refilled when I got home again. 350 miles took 13.6 gallons (91 octane non-ethanol). That my friends is only 25.7 mpg. Speeding and a mean headwind kick my *** and turned my supergasmileagecar into a "normal" car. I felt like I got kicked in the teeth.............