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Old February 11th, 2013, 04:24 PM   #201
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i'm guessing you aren't good at math, since you claim to be getting 3-4 mpg over what they are rated for, and you have over sized tires. I have noticed most chevy people claim their vehicles get 3-10 mpg over what they are rated for, so either they are full of shit, or don't know how to do math.
lol. X2.
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Old February 11th, 2013, 04:38 PM   #202
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I'm guessing you aren't good at math, since you claim to be getting 3-4 mpg over what they are rated for, and you have over sized tires. I have noticed most Chevy people claim their vehicles get 3-10 mpg over what they are rated for, so either they are full of shit, or don't know how to do math.
Not to mention 200 horsepower
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Old February 11th, 2013, 05:55 PM   #203
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i went up to the sue last weekend and averaged 18.4 mpgs and my truck came stock with 265s. i did 70 the whole way up
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Old February 11th, 2013, 06:26 PM   #204
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Originally Posted by booblinker View Post
I'm guessing you aren't good at math, since you claim to be getting 3-4 mpg over what they are rated for, and you have over sized tires. I have noticed most Chevy people claim their vehicles get 3-10 mpg over what they are rated for, so either they are full of shit, or don't know how to do math.
My fathers 1993 fullsize 2 door blazer of the same bodystyle came with 265's
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Old February 11th, 2013, 06:32 PM   #205
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My fathers 1993 fullsize 2 door blazer of the same bodystyle came with 265's
Ok I was wrong about them being oversized, but in General Chevy owners seem to claim way higher then what they are rated for.
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Old February 11th, 2013, 06:43 PM   #206
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Ok I was wrong about them being oversized, but in General Chevy owners seem to claim way higher then what they are rated for.
If any company has the best fuel mileage for trucks I would put money on a Chevy (and Im a ford fan boy). I love the guys with newer cummins trucks telling me they get 22mpg....or the guy with the 08-10 Superduty diesels getting 20+mpg also. I had a 08 F250 with a spartan tuner and a dpf delete, stock tires and all and it was the worse fuel mileage diesel I have ever owned. 15mpg 100% highway at 75mph.
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Old February 11th, 2013, 07:26 PM   #207
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Ok I was wrong about them being oversized, but in General Chevy owners seem to claim way higher then what they are rated for.
I can't vouch for other chevy owners, but my chevy's (2001, 2007, 2009 Silverado's) all got better or as good of mileage as the sticker stated they should. I had 3 grand prix's that all got better by far than the sticker stated they would.

I have had two ford focus's that both get less than the sticker states they should.....and I am full retard anal retentive about calculating my mileage.
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Old February 11th, 2013, 07:34 PM   #208
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I get 30 mpg in my duramax!


Jk! Jk!

Best I got was 20.4 hand calculated (gps verified) over 300 miles at 76mph
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Old February 11th, 2013, 08:19 PM   #209
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If any company has the best fuel mileage for trucks I would put money on a Chevy
I agree but I have been told 30+ mpg outta a Corvette by multiple people, Grand Prix getting 33 mpg, again by multiple people, 43 mpg outta a cavi. I have driven all brands, I will agree I have been closer to rated mileage on Chevys than dodge or Ford, but not my much.
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Old February 12th, 2013, 07:42 AM   #210
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few guys at work are claiming mid to high teens if they behave. they also say they were <10 while enjoying the power for the first month or so of ownership. another friend of mine has averaged in the low teens with his cc\6.5ft bed 4x4 with max tow package while daily driving and pulling his GN horse trailer to the harness races every weekend.
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Old February 12th, 2013, 07:48 AM   #211
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I agree but I have been told 30+ mpg outta a Corvette by multiple people, Grand Prix getting 33 mpg, again by multiple people, 43 mpg outta a cavi. I have driven all brands, I will agree I have been closer to rated mileage on Chevys than dodge or Ford, but not my much.
I used to get over 30 mpg on my commute in my grand prix consistently. Hand calculated. 2005 GT and a 2007 base model.

I don't recall the exact number, but I wouldn't be surprised if I hit 33+ mpg with it from time to time.

I have heard the corvette claim as well....they are rated at 24-25 mpg (in 2005, just picked a random year). I could honestly see close to 30 if someone was driving 65 on the e-way. Keep in mind the fuel economy standards for highway driving have changed recently (don't recall which year) to include some driving at up to 80 mph (or similar) and some hard acceleration and some slight variation of speed like you would see in typical highway commuting traffic. Across the board this brought numbers down for ratings....

So, that said, it is not unreasonable to see higher than rated mpg's. (Like my trip across Ohio going 60-65, whatever the exact posted speed limit was and getting something like 42 mpg in my focus, 5+mpg higher than its highway rating).

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Old February 12th, 2013, 08:22 AM   #212
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I agree but I have been told 30+ mpg outta a Corvette by multiple people, Grand Prix getting 33 mpg, again by multiple people, 43 mpg outta a cavi. I have driven all brands, I will agree I have been closer to rated mileage on Chevys than dodge or Ford, but not my much.
I got 30mpg multiple times out of my 09 Z06. If you drive 70-75 on the highway like a white man it will get phenominal fuel economy.
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Old February 12th, 2013, 09:06 AM   #213
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yep corvette has all the positives in the right direction

cylinder deactivation, lightweight, low to the ground, low roof, and I think the new one got lighter

the big 20" wheels on all the trucks seems like a step in the wrong direction, but I don't buy a truck for fuel mileage either
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Old February 12th, 2013, 01:52 PM   #214
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yep corvette has all the positives in the right direction

cylinder deactivation, lightweight, low to the ground, low roof, and I think the new one got lighter

the big 20" wheels on all the trucks seems like a step in the wrong direction, but I don't buy a truck for fuel mileage either
LS7 doesnt have cylinder deactivation. But it is a 6speed with 505hp, and weighs 3130lbs.
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Old February 12th, 2013, 02:03 PM   #215
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the big 20" wheels on all the trucks seems like a step in the wrong direction, but I don't buy a truck for fuel mileage either
I've noticed this too, I'm curious, is it added wind resistance, or weight?

I can't really wrap my head around a rim tire combination that is still overall the same size as another can affect mileage as much as it seems to.
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Old February 12th, 2013, 02:05 PM   #216
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i think its the weight of the wheels
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Old February 12th, 2013, 02:05 PM   #217
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the new LT1 has cylinder deactivation
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Old February 12th, 2013, 02:13 PM   #218
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i think its the weight of the wheels
I sorta figured a 20" wheel with a similar height tire would weigh about the same as a 16, 17, 18" wheel with a similar height tire.....

I can't imagine the mileage is significantly different....oh well boredom is clearly starting to set in at work if we're discussing this topic lol
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Old February 12th, 2013, 02:26 PM   #219
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Heres one why do tires with less sidewall cost more? (17" vs 20")
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Old February 12th, 2013, 02:29 PM   #220
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Heres one why do tires with less sidewall cost more? (17" vs 20")
Less demand?


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