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 Re: MPG question
[Re: Rodeo Clown]
#411733
03/04/04 07:44 PM
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Joined: Mar 2002
Posts: 288
Mudrunner
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Recently drove a 5 hour drive I made it in 4 <img src="/forums/images/graemlins/smile.gif" alt="" /> 16 mpg ALL on highway, with a mountain pass <img src="/forums/images/graemlins/frown.gif" alt="" /> and doing 80-90 on the highway.....which was slightly hilly
Nate Johnson
1993 Isuzu Rodeo 4wd - Not Much Crap
1998 Chevy Silverado 2500 - A little More Crap
2006 Suzuki Z400 - A Bit More Than A Little More Crap
2004 Yamaha Raptor 660 - Lots of Crap
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Re: MPG question
[Re: kobyhud]
#411734
03/04/04 08:17 PM
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Joined: May 2002
Posts: 671
Rock Warrior
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My rodeo is getting like 13-15 ever since I put on the 33's ... Remember that your ODometer is off by the same amount as your SPEEDometer with the larger diameter tires. Apply that same correction % to the miles before you do the calculation and it might not be quite as bad as you think! <img src="/forums/images/graemlins/smile.gif" alt="" /> Jay
1991 Trooper - DEAD! 2.8 V6, 5 spd, 4WD, HD clutch, 2.25" exhaust, EPROM Chip, KC/Hella, Aisin hubs, Rancho 9000X's, Panasonic/Infinity/Alpine My Pics
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Re: MPG question
[Re: Pyro4117]
#411735
03/04/04 08:48 PM
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Joined: Oct 2003
Posts: 167
Wheeler
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I have never figured out the mileage on my trooper, basically cos I KNOW it sux.
My gas gause moves about as fast as the tach!
I have a '90 2.8 with 33x12.50s...
Tom Moog   1994 Trooper LS
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Re: MPG question
[Re: Pyro4117]
#411736
03/04/04 08:56 PM
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Anonymous
Unregistered
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I get about 15-16 on the road and about 21-22 on the highway (some freak Rodeo I guess). But keep in mind I still have the stock pizza cutter tires on, and in winter with that oxeginated crap I get about 15/18
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Re: MPG question
#411737
03/04/04 09:04 PM
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Anonymous
Unregistered
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I get a pretty solid 16-17mpg from a 2.8L, automatic in mixed driving. I have a heavy foot. (adjusted for tire size increase)
Jill's got an 87 XJ with auto trans and 4.0L , with me driving it gets about 18-19mpg. (also adjusted for tire size increase) I don't know what mileage it gets with her driving, as she never keeps track of that.
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Re: MPG question
[Re: Pyro4117]
#411738
03/04/04 09:23 PM
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Joined: Apr 2001
Posts: 777
Rock Warrior
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Remember that your ODometer is off by the same amount as your SPEEDometer with the larger diameter tires. Apply that same correction % to the miles before you do the calculation and it might not be quite as bad as you think! <img src="/forums/images/graemlins/smile.gif" alt="" /> Jay Yeah, I take that into consideration, although now that the 265's are getting pretty worn, my calculations are even more off...I figure I get about 275 miles on a tank(pre adjustment) times that by about 7% for the difference in tires and that is what I work with for my mpg.
Last edited by Jonesy; 03/04/04 09:24 PM.
'97 Rodeo
3.2L V6
DOR 3" lift, 3"BL, DOR Boulder Bars, Tera-Low's, 33x10.5,Surco Safari Rack, Cobra CB, Rancho 9000's....andnNow with Half-Doors for the summer
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Re: MPG question
[Re: Wayne]
#411739
03/05/04 12:28 AM
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Joined: Dec 2001
Posts: 2,652
OP
Roll Me Over
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I should have been more clear. Obviously, since I was talking mileage per the sticker, I meant on a stock Isuzu as well.
MPG at higher speeds and with lifts, bigger tires, etc all affect it.
But a brand new, stock, Jeep cheroke doing highway runs to and from the airport (3 hours round trip) at 60 mph and it's only getting 13.....I'd be upset if my sticker was that far off.
Thanks for the feeback and for noting when you had mods when reporting mileage.
[color:"white"]? 04 Rodeo DI ?[/color] 75k mi, body damage on the 1st weekend I got it.
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Re: MPG question
[Re: kobyhud]
#411740
03/05/04 12:49 AM
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Joined: Jan 2004
Posts: 906
Rock Warrior
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My rodeo is getting like 13-15 ever since I put on the 33's I suspect it will only get worse when I go to 35s. I used to get about the 16 that Jonesy claims when I was on 265s. Actually, until you regear, bigger tires save MPG..... <img src="/forums/images/graemlins/smile.gif" alt="" />
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Re: MPG question
[Re: pplotz]
#411741
03/05/04 04:53 PM
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Joined: Jun 2003
Posts: 442
Mudrunner
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sorry thats just not true, bigger tires = more weight more weight = more hp to turn, more hp to turn means push harder on gas pedal, push harder on gas pedal means worse MPG. At freeway speeds the MPG may SLIGHTLY improve with bigger tires but very minimally at best. Lower gearing helps put you back into your powerband to be able to use less pedal to get where you need to go.
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Re: MPG question
[Re: kobyhud]
#411742
03/06/04 06:20 AM
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Joined: Dec 2001
Posts: 2,652
OP
Roll Me Over
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I'll second that. Bigger tires = more mass to turn.
It also equals a larger frontal profile, which means more wind resistance, which is your #1 source of gas-scucking power. Wind resistance is calculated off your front 2-D profile * velocity cubed.
[color:"white"]? 04 Rodeo DI ?[/color] 75k mi, body damage on the 1st weekend I got it.
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