ok....my OME lift is on, does this mean my MPH reading is off now?

survivorman · 05-05-2008, 08:34 PM

ok so I have about a 3in OME lift....my cousin tells me the other day "you know your MPH reading is going to be off because of the lift" I say HUH??!! is this true? if so by how much off? what do I need to do if anything to correct it......thanks in advance

layonnn · 05-05-2008, 08:41 PM

Quote:

survivorman previously said:

ok so I have about a 3in OME lift....my cousin tells me the other day "you know your MPH reading is going to be off because of the lift" I say HUH??!! is this true? if so by how much off? what do I need to do if anything to correct it......thanks in advance

Tell you cousin to go back and finish middle school.
I believe he doesn't know the difference between larger tires and a lift.

Brock · 05-05-2008, 08:42 PM

LOL...lift has no effect on MPH....it is the size of the tires. My 295x70x17 are only 1.6mph at 65mph so that is close enough....well according to my Garmin GPS.

BobKid · 05-05-2008, 09:26 PM

My FJ is actually closer to actual after upgrading to 33" tires than it was beforehand. I'm reading about 1.5 MPH lower than actual speed now, versus ~3 MPH high with 31" tires.

RomaBoy · 05-05-2008, 10:32 PM

I'm no expert but wouldn't a lift create more drag hence less mpg?

**mdstrawn** · 05-05-2008, 10:40 PM

Quote:

RomaBoy previously said:

I'm no expert but wouldn't a lift create more drag hence less mpg?

Lift will generally decrease gas mileage, but it won't affect the spedometer.

**FJ FunJunkie** · 05-05-2008, 10:42 PM

yup, lift creates drag hence less mpg, not mph. lol. I also got 33's and according to my GPS and those radar detector signs I am actually dead on with my MPH, never even checked before the swap.

jtinidaho · 05-05-2008, 11:33 PM

I have had little if any change in MPG with my OME heavy/medium lift (with ARB bumper and winch) while retaining stock 17" tire size.

My last long trip with my snow tires (studded Wild Country TXR's) in stock size in my 6MT gave me 17 mpg @ 75 and 19 mpg @ 65. This is about what I got with my stock 17" Bridgestones before the lift (I hope they wear out soon, this will be their third summer and I still cannot justify new summer tires). Still, only about 12,000 miles on the FJ, but I think this is the best mileage I will get.

I doubt I will upsize tires in the future. I have had adequate performance with the stock size for my offroad needs. The hit in decreased MPG and acceleration with upsized tires is not worth it in my opinion. Probably BFG A/T's, next time, in stock size for summer.

My FJ goal is a daily driver with the ability to tackle snow covered roads and any forest/mountain road. So far, so good.

survivorman · 05-06-2008, 05:12 AM

Quote:

layonnn previously said:

Tell you cousin to go back and finish middle school.
I believe he doesn't know the difference between larger tires and a lift.

whoa.....if he is wrong just say that, but where does the whole go back and finish middle school thing come from? I am here to get info not insults.....lets try to be adults here thanks.

ok so I added 285/70/17s as well am I going to see much of a difference?

RomaBoy · 05-06-2008, 09:16 AM

I think I'm starting to get senile, I thought I read MPG. At least I stopped doing the TRD "CIA" thing.