|
|
Post by mitsubishiL200 on Nov 30, 2004 0:20:17 GMT -5
I've heard it said that more aggressive tires don't give you as good of gas mileage. Is that hogwash?  I would think it would be so miniscule, that one should not worry. What, for instance would be a better tire for good gas mileage- Yokohama Geolandar HT-S or BF Goodrich A/T T/A KO?  |
|
|
|
Post by CerOf on Nov 30, 2004 12:01:50 GMT -5
you are looking at maybe .2 mgp difference.
What changes the gas mileage a lot is a bigger/wider/smaller tire than stock.
|
|
OLD88
Full Member
Posts: 64
|
Post by OLD88 on Nov 30, 2004 22:10:41 GMT -5
Stock tire on OLD88 was 225 Bridgstone. 21MPG. 50,000. Next tire was Mich 235. 21 MPG. 110,000. Next tire was BFG 9.5 MT, 21MPG. 250,000 Current tire is BFG 235. 21MPG. 280,000 tonight. No tire made a milage difference, even the slightly oversize 9.5x31. I put monster mudders on my 'Ol Ford F250 and picked up 2MPG!!!!
Agressive tread or highway tread makes almost no difference, in my experience (too small to detect). Rolling circumference makes a differnece but only if you don't do your math. Remember when "overdrive" transmissions were the rage... 1953 through 1965? No? Oh well, it was about a 1/3 change in ratio when in high gear... manual trans... .Overdrive allowed the engine to drop to "torque peak" instad of "HP peak". Better mileage resulted. The rolling resistance of any belted radial is so small from size to size I'll bet you can't tell. But a tire that puts you at the wrong part of your power curve you can tell in an Arab/gaspump/second. I ran OLD88 up to the largest diameter that would clear the wheel wells but have settled on a size just a bit taller than stock. If my Old HIboy came back to visit I'd have 38's on him and run around in third gear. Do you get this? Post back if you need the math.
|
|
|
|
Post by mitsubishiL200 on Dec 1, 2004 2:15:12 GMT -5
I understand that aspect, with the gearing/ ratios and what not- at least to an extent. Thanks, that does help a lot. I just thought that the friction caused by having more agressive tires posed a factor.
|
|
|
|
Post by Beaverton48 on Dec 3, 2004 12:33:21 GMT -5
I just placed an order for Bridgestone Dueler A/T Revos (top rating from TireRack.com)...
Costco has them for 135.99 each, shipping, balance, install, old tire removal, etc.
I average around 21mpg with my orig. Yokohama GO39s...I will keep a log to see what happens with my mileage/new tires...
MS2000 LS 4WD Sudan Beige
MODS: Extreme Cone Air Filter, Man. Locking Hubs.
|
|
|
|
Post by Beaverton48 on Dec 3, 2004 16:39:51 GMT -5
To follow up on my last reply, my only beef with my Mits is the gas gage!!!
When the rig is showing almost empty, I stop for gas and after a fill and reading the slip, I still had somewhere between 4 & 5 gals left in the tank...
Is there any way to adjust the gas gage?? ...
Anyone else having similar experience???
|
|
OLD88
Full Member
Posts: 64
|
Post by OLD88 on Dec 4, 2004 1:17:00 GMT -5
Hi Mitsu...200, I am glad you enjoyed my post. Now that you have the root of ithink about this; You are playing "hoop" with a buddie. Rolling a barrel hoop or a hula hoop down the road. Willl it roll better or worse if it is an inch wide or three feet wide? of course not. Rolling resistance comes from (in tires) flexing the sidewalls and tread band to the next configuration. So, like, maybe, you know, like we need ,like 19"s? Nope. All of it comes down to final drive ratio at the pavement and the width is incidental. As to the actual tread pattern... if you can find any difference in rolling resistance from a drag slick to a monster mudder..... well just trot it forward. Of course you have seen drag tires whch change diameter (circumference) as they spin faster? The ideal tire puts your rig in the "sweet spot" of your engine at the speed you drive. The ideal off road tire puts your rig 15' above rocks and won't "air down" on side slopes and still will let you pulll to the "red line" in low gear. Compromise. We aren't there yet. |
|
|
|
Post by mitsubishiL200 on Feb 15, 2005 17:20:41 GMT -5
"""When the rig is showing almost empty, I stop for gas and after a fill and reading the slip, I still had somewhere between 4 & 5 gals left in the tank...
Is there any way to adjust the gas gage?? ...
Anyone else having similar experience""""
I also have this issue. It's kind of nice I guess, but also a pain. I think i'm gonna run out- but really can go a lot longer.
|
|
|
|
Post by CerOf on Feb 16, 2005 18:20:32 GMT -5
no way to change it with out doing some invasive modifications that aren't worth the $$.
Just know, that once your light goes out you have at least 3 gallons of gas left, at a worst case scenario 15mpg, so you can go for another 45miles before having to fill up.
That's what I do with our Sport as ours is the same as yours when it comes to the "e" light coming on...now the grand cherokee...when that sucker goes on and says "0 miles to empty" on the over head display...you had BETTER be finding a gas station, even if it means back tracking!
|
|
I would think it would be so miniscule, that one should not worry. What, for instance would be a better tire for good gas mileage- Yokohama Geolandar HT-S or BF Goodrich A/T T/A KO? 
