I have moved up to B-Stones Revos 245 75 R16's with the OME lift kit.

I am seeing a drop in mileage to +\- 23 on the highway.... I has been averaging 29 with the factory 225's

Do I need to have the dealer or whomever change to computer to allow for bigger tires?

I am basing my mileage on the EVIC only.

OME was a great improvement!

Thanks!

Tom

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2005 Jeep Liberty CRD Limited
Build Date May '05
OME lift kit
Samco hoses
Weeks Stage 1
PMF EGR plug kit
ARP Stud
Cracked CAC repaired with epoxy filler

Yes, your EVIC will be way off now, but still expect a small drop when it's straightened out by the dealer reprogramming your ECU.

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05CRD: GDE Hot ECU & TCM tunes, Provent, Cat filter, Facet lift pump, TransGo kit, Florida TC, Samcos, stainless brake lines, HDS thermostat, Renegade light bar,
RL super sliders, Bilstein adjustables, Al's Gen 4.5 Arms, 235/85-16 Duratracs, DTT rear, Elocker front, EVIC+TPMS, Turbo timer, McNally pillar gauges, Weeks Stage II kit.

From my experience, the switch from stock to 245-75-16 and lift was about 5% less MPG.
EVIC (with reprogramed speedo) reads 10% optimistic compared to actual,
My 06 ABS sensors provide odometer data and it is off by -9.5% (no way to reprogram this, I believe)
yes, speedo and ODO use differnet sensors on 06 models.. go figure!
Not sure about 05 with ABS...
When I calculate MPG at fill up, I correct for the odometer error

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06 CRD LTD - Suncoast TC- Shift Kit - Spicer UJ - FRKNLIFT - F37 - Magnaflow - 22.0 City - 24@65MPH - Fumoto F-102 - AUX T Cooler - Tank Lift Pump

From the EVIC all you will hear is good news, do some manual calculations based on your actual distance covered (use GPS or milestones along the road) to measure your odo error and divide by number of gallons.

I have had the EVIC off by more than 15% with stock setup. When I changed to 235/75 R16 the EVIC was closer to the real deal while the odo was 3% off

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L.O.S.T forever!
Silver 2002 Skoda Fabia TDI, 235,000km
Former car: Jeep KJ 2003 CRD

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