Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - BMW M3: "The optimal speed for fuel economy in this car seems to be around 80mph"

dremd · 06-19-2008, 09:40 PM

I have to say that the Supra with tall gears, big tires, cold ambient temps, undertray, optimal fe speed did appear to be in the 80~90 mph zone (was 2200~2400 rpm with decent load) With the 4.30's in her now it's probably around 40mph (guess).

However I did pull several 33 mpg in town tanks on it last summer; even with 285's out back and 245's up front. Just watch the boost gauge, turn the motor off as much as I could, run lots of PSI in the tires. "Normal" driving gives 15~17 mpg in it now. I don't want to Eco-mod it nor hypermile it, as long as I burn less than 2 tanks per year (3/4 tanks burnt so far this year) I don't care.

06-19-2008, 09:40 PM	#17 (permalink)
dremd 6 speed Diesel FTW! Join Date: Dec 2007 Location: Scott, La Posts: 1,490 The Golf - '02 Golf GLS TDI Diesel 90 day: 63.94 mpg (US) Mongoose - '05 E-bike AWD 90 day: 1810.34 mpg (US) Thanks: 45 Thanked 31 Times in 26 Posts	I have to say that the Supra with tall gears, big tires, cold ambient temps, undertray, optimal fe speed did appear to be in the 80~90 mph zone (was 2200~2400 rpm with decent load) With the 4.30's in her now it's probably around 40mph (guess). However I did pull several 33 mpg in town tanks on it last summer; even with 285's out back and 245's up front. Just watch the boost gauge, turn the motor off as much as I could, run lots of PSI in the tires. "Normal" driving gives 15~17 mpg in it now. I don't want to Eco-mod it nor hypermile it, as long as I burn less than 2 tanks per year (3/4 tanks burnt so far this year) I don't care. __________________ 6 speed ALH TDI