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down sizing tires
I have downsized my tires to a 195/50R15 and I have achieved much better combined MPG. If off set my speedometer a bit and i have calculated that my odometer will be off by 10% but even still I have been achieving around 42 MPG Combined Driving (thats city and highway). My highway MPG has dropped form 47 to about 44ish (depending on how badly i decide to speed). But my complete city driving MPG has gone up from 34 to around 38. I also run my tires at 38PSI cold pressure and i also have eibach sportline springs with Koni shocks. Oh i currently run Bridgestone Potenza G009. The next thing i am going to try is going back to a 16" rim but a much lighter one with a 40 series tire on it, because if you lighten up the rim and have a low profile tire on it, it should decrease the overall weight of the rim and tire combination which should help lessen the power loss due to a heavier wheel and tire and up the mileage. Let me know how you make out, and if you get the same results.
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A little engine screaming its head off is a lot more exciting than a big engine going slowly, you know at lease it is to me. Cause of this thing you have to wring every last bit of power out of it, and that’s where the fun comes. You know going quickly in a slow car is actually more fun than going fast in a fast car, cause anyone can go fast in a fast car when you take a car that is essentially not so powerful and make it do things that it’s not suppose to do that’s where the fun is. - Jay Leno
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