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Also, with bigger tires you'll be going faster/farther than you speedometer/odometer will show. So you you'll need to calc that in to your mpg estimation.
I still get 15 highway on 35s with 4.56 if I drive the speed limit (IF!!!)
Also, with bigger tires you'll be going faster/farther than you speedometer/odometer will show. So you you'll need to calc that in to your mpg estimation.
I lost 1.5 mpg with lift and true 34's, no other mods. Getting around 15.5 to 16.5 GPS calculated depending on mood that day, and where I am driving.
Jeremy
I created a spreadsheet to track. I get the receipt for each fillup (or write down details), spreadsheet automatically calculates actual miles due to tire size difference (odometer miles since last fillup X 1.1 or whatever # is correct for you; divided by gallons added).
I use this spreadsheet to track everything, actually - date, odo miles, corrected miles, gallons, mpg for last tank, mpg since I started; cost, grade, running cost; maintenance and modifications. I've had the GX for 3 years now and running mpg for that period is 16.5, at a total cost of $6542.69. Grade of fuel hasn't shown any difference whatsoever in mpg.
I did this for my 80 for the 8 years I had it, the guy who bought it from me really appreciated it and has kept it going.
I've run the same thing for many years, except that it was a LAMP server with a postgresql backend. Makes it much easier to maintain 8-9 vehicles.
I have a Kenwood DNX893s and it tracks my MPG, I enter the gallons and it tells me the MPG bases off the GPS miles. Also have "Gas Cubby" but it doesn't adjust for the larger tires. Gas Cubby says I have avg 15.1 over the last 30K miles, so add in the adjusted tire size and its about 15.8.
That's so 2000!
This decade, you add an OBD reader paired with a GPS unit feeding a LTE modem that uploads mpg and miles data real-time to a cloud app on AWS or Google. Then you can do 1-10 million cars.
Oh wait,....that's what Tesla did.
Anyway....enough geeking out.
stock bumpers, RCI metal full set of skid plates, stock gears, Dick Cepek 265/75/17 which are 32" tall tires and 10.7 wide, FUN COUNTRY | DICK CEPEK TIRES AND WHEELS I have a storage box in back and now a ARB 50qt fridge.
the Kenwood says 15.9 since last June. this shows my best at 28mpg, but I missed a top off in there.
View attachment 1431952
It says KenwoodWhoa, what head unit has an OBDII interface?