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Discussion Starter #1
expecting my longhorn next friday and planning on changing out wheels for some nitto terra grapplers 33x12 r18, and wondering if anyone can tell me if/how much mpg i will lose...???
 

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Did read about others that changed to much larger tires and lifted the trucks. Fuel mileage did decrease but there are oh so many factors on the tire/road friction, the lift and air resistance that it is tough to figure.

Other issues involved are calibration of the speedometer which may have an effect on the EVIC operation. Now don't forget the lower gear ratio you will be creating. Actually, for fuel mileage, that would increase it and offset some of the resistance increase.

The answer is ...

If you are like most others that do it, you will spend huge amounts of money for the look and really don't care about a little bit of fuel economy. Maybe that's why I never read an exact report on the mileage issue from those that do it.
 

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Discussion Starter #5
yeah 10%, I hoping to only drop about 1mpg. That's why I'm only putting 33's with a 2" level kit. And the terra grappler is the least rugged of the brand. Also got the 3.92 rear to help with that and the fact that I'm a mobile trainer that works out of my truck bed so I always have about 300 pounds of equipment in bed. Trying to get the best of both world,,,def hoping to do MUCH better than the 14.5 I'm getting with my 2011 silverado LT 1500.
 

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That's all???

Hideous but I guess normal. Kept thinking about what engine you had as that's important in any of the models. Best gasser is the Pentatstar in the Ram and now also the only (makes it the best also) diesel in a 1500 today.

My take is in general, all-around driving (whatever that is) you will be in the lower to mid-20's after you are rigged and going. Don't (or maybe do) be surprised if you see times when you are above 25.
 

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Man I would be super happy to see anything in the 20's with my diesel, shouldn't be too hard I suppose being that I don't tow any trailers and there's not many inclines on florida roads. Now if I can just find a bully bar set up that won't interfere with my park sensors... Thanks for all the info guys, it's nice to have so much experience in one place ; )
 

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Man I would be super happy to see anything in the 20's with my diesel, shouldn't be too hard I suppose being that I don't tow any trailers and there's not many inclines on florida roads. Now if I can just find a bully bar set up that won't interfere with my park sensors... Thanks for all the info guys, it's nice to have so much experience in one place ; )
with what you do with your truck which for the most part seems to be commuting getting that number could be easily possible.
 

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I went with 305/55/20 120s 8ply terra grapplers..I couldn't tell any major change in mileage..I'm still getting 22.5 to 23.7 average, Just depends on how I drive. Also put in a 2 inch level kit. The truck looks so much better than the stock ride.



Side wall-6.6 inches Inside diameter-20 inches Overall diameter-33.21 inches Circumference-104.33 inches
 

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305 with 2 inch lift

Do you have photos of your truck with this setup? I just bought a longhorn eco and it sits way to low wanted to see what it will look like
 

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Discussion Starter #11
Nice Smashy! Glad to hear. I'm getting some 18" moto 970 series blk/machine. Matching tire is 325/60/18 terra grappler. Same diameter as yours just a little wider at 13". I'm thinking it's going to look pretty killer with the Bushwacker flat black pocket style fenders. Would love to see how your level kit sits. Did you lift the back at all? I noticed some people saying they did 2"level on front and 1" on back. I'm guessing maybe that helps maintain some of the aero dynamics ???? I was wondering if this will be more important for me since I always have about 300lbs of equipment in my bed... What do you think guys??
 

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Do you have photos of your truck with this setup? I just bought a longhorn eco and it sits way to low wanted to see what it will look like
I do but it keeps saying error while loading..I'm trying to figure it out
 

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