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  #1  
Old 10-23-2012, 10:13 AM
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Default 305/55r20 fuel milage

Hey looking into getting a set of BFG AT 305/55r20 and I'm wondering how bad my fuel milage will suffer from that right now I average 17-18 city and 21 on the highway.. So you guys that have this size tire please let me know.. These factory tires are complete garbage and I'd like to get something a bit more manly with out getting raped at the pump worse then now already thanks
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  #2  
Old 10-23-2012, 10:58 AM
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I'm lookin at getting the same tires. I had BFGs on my last truck, although they were only 285/75/16s i think and they didn't hurt. From what i've gathered it is the mud terrains that kill gas the most. I'm not sayin the A/Ts WON'T hurt, but definitely not as much as the M/Ts.
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Old 10-25-2012, 11:05 AM
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thats a wide tire which maybe will drop it 2-3. i went with 275/55/20's on mine and with a 55 tire i think i maybe gained like .2-.5 if that...i wanted the 305 bbut figured gas would drop from my 13 to 11!
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Old 10-25-2012, 11:20 PM
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When I.had my 305/55/20 zeons I lost about 2 mpg or so over the smaller stock goodyears that came on the truck. I thunk most of it was a loss in the stop and go city driving. although I didn't really notice a difference from the 305/55 zeons I had to the 285/60 Goodyear duratracs that ate in the truck now.
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Old 10-28-2012, 06:31 PM
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Quote:
Originally Posted by dodgeboy360 View Post
Hey looking into getting a set of BFG AT 305/55r20 and I'm wondering how bad my fuel milage will suffer from that right now I average 17-18 city and 21 on the highway.. So you guys that have this size tire please let me know.. These factory tires are complete garbage and I'd like to get something a bit more manly with out getting raped at the pump worse then now already thanks
How do you get 17-18 in the city,i drive it like a grandpa most of the time and only average around 14? Are you reading it in mpg or in litres per 100 ks? Also with going to the 305's,do you already have a levelling kit on it and do you run spacers?
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Old 10-28-2012, 08:28 PM
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haha...no offense here, but im going to do it anyhow...

number 1) you dont buy a truck for fuel efficiency..if you want to save money on gas..hyundai or honda is my recommendation.

number 2. DUDE drive to detroit for gas...you live 10 minutes form the USA...less than 1.00 a litre in USA...
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Old 10-31-2012, 05:02 AM
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I found when I upsized the tires I got better mileage with the Diablo 87 tune running with the mds shut off. I mean 1.5 to 2 mpg mixed. plus a little extra power
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Old 11-05-2012, 07:26 PM
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Haha yes thanks for letting me know that I bought at truck not for fuel mileage.. I know in not gonna get great mileage but I would like to stay above the 15mpg mark seeing as I have a 83 ramcharger on 35's that gets about 7mpg so I do need some fuel expense releif.. And as for Detroit.. I would like to go over there but for one I don't have my passport and 2nd I don't wanna get shot... And yes I'm not lieing I average 17 between city and county driving.. 21 on highway and yes I'm 100% sure it's mpg ... Lowest I have gotta around town was 15 and towing I get 11-13.. I have 3:55 gear aswell
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Old 11-06-2012, 09:28 AM
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i need to get me one of these new hemis seriously...im getting 12.7 right now wtf
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Old 11-06-2012, 11:05 AM
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Wow that's discusting lol... Ya I'm not kidding either I do get 17-18 average in the summer now it's colder it's hasent went lower then 16.2 unless I beat on it
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