How much of a lift should I get? Need input

[KRANK08]

I recently purchased a black 2014 Silverado 6.2 Crew 4x4 LTZ. I was originally planning on getting a 4" lift and 33's. After researching, looking at different setups on-line and in person, weighing gas mileage, looks, etc, I decided I wanted a 2.5" RC lift and 33's. Now I am considering just a 2" ProComp leveling kit and getting 285/55R20. I don't want anything that is too extreme or would kill my gas mileage,I’m thinking 33’s would hurt gas mileage pretty bad. I just want to improve stance and look a little more aggresive. . I like the wheels to be more sucked under the fender and not sticking out – that’s why I am looking at 20x9 with a +20mm offset. I will be getting 20x9 Fuel Maverick Wheels and Nitto Terra Grapplers. Any input or advice would be very helpful in making a decision.

 

[fondupot]

You're gonna lose gas mileage any route you go. Just FYI. Adding rolling mass from bigger wheels/tires, reducing erodymanics, all causes less efficiency.

 

Also keep in mind, if you add bigger tires with not enough offset, you could run into rubbing issues.

[BlueWrapper]

Does pro comp have a 2" level? I've only seen a 2.25 and 1.5 (top spacer only)? You should be able to run the set-up you mentioned on the 2.25 level with no issues.

 

You'll lose some MPG going from a P rated tire to an LT, but honestly the Terra Grapplers are way lighter than a mudterrain, even some ATs so I don't think you'd take a drastic mileage hit.

[BlueWrapper]

Just my opinion but that size terra grappler would probably run on a 1.5 or 2 inch level, hell maybe even on stock suspension. It's only 32.3 x 11.7. That's less than an inch bigger than stock. +20 is close to factory offset.

[KRANK08]

Just my opinion but that size terra grappler would probably run on a 1.5 or 2 inch level, hell maybe even on stock suspension. It's only 32.3 x 11.7. That's less than an inch bigger than stock. +20 is close to factory offset.

Yeah you're right, I think it is a 2.25" level. Yeah, they aren't much bigger which makes me debate how aggressive it will be. I wish they made a 295/55r20. I saw a truck identical to mine with a level and 295 trail Grapplers. Looked bad ass.

[BlueWrapper]

Yeah you're right, I think it is a 2.25" level. Yeah, they aren't much bigger which makes me debate how aggressive it will be. I wish they made a 295/55r20. I saw a truck identical to mine with a level and 295 trail Grapplers. Looked bad ass.

 

Always that conundrum of the bigger more aggressive you go the more your MPG will drop. If you do the 2.25 level you should be able to fit the 295s too if you stick with the +20 offset wheels. It'll definitely look better but you'll lose a bit more gas mileage.

[Mike1220]

Anything you do will hurt ur mileage. You can do things like get the vehicle tuned or change out air intake and exhaust, like I did, and it will help to counter act the MPG loss. I got a skyjacker level kit along with exhaust and air intake on stock 275/55/20 highway terrains and I still saw 21-22 mpg at 70 mph in my CCSB 5.3L 4x4 Sierra.

 

Whatever you do to change the stance or profile of the vehicle will likely hurt ur mileage. Unless you lower it. But that's the opposite of what is looking to be done.

 

 

Sent from my iPhone using Tapatalk

[Spurshot]

If fuel economy is the most important thing to you, stick with a stock ride height, keep the air dam, don't put any brush guards and external lights on it, and stay with stock tires.

 

I noted that the AFM system didn't run as often with my larger tires. The logic programmed in the system is setup for stock tires.

[Spurshot]

A little math for perspective

 

If you drive the truck for 100,000 miles with fuel @ $4.00/gal:

- a truck that gets a lifetime average of 16mpg will burn $25,000 in fuel

- a truck that gets a lifetime average of 14mpg will burn $28,571 in fuel

[Mike1220]

A little math for perspective

 

If you drive the truck for 100,000 miles with fuel @ $4.00/gal:

- a truck that gets a lifetime average of 16mpg will burn $25,000 in fuel

- a truck that gets a lifetime average of 14mpg will burn $28,571 in fuel

And if you do cover the 100,000 miles in 5 years then that's an average of only $714.20 in fuel a year. Not too bad IMO if you get your truck the way you want it.

 

Or if you get the 100,000 over 10 years, then it's an increase of $357 in fuel every year.

 

Just a little extra math to add to what Spurshot did.

 

 

Sent from my iPhone using Tapatalk

[KRANK08]

So I'm leaning toward 295/55r20 open country at2 extremes for the tires. They are 32.8×12.2, an inch taller and wider than the oem tires. Should I get a 2.25" procomp leveling kit or a 2.5" rc lift? The procomp does not add any lift to the back while the rc adds 1 inch. Which do you think will look better?

[fondupot]

Whatever you do, do yourself a favor after you add the bigger tires and get a custom tune. This will allow you to recalibrate the speedo for bigger tires. and should open up some hidden HP and help with mileage.

[KRANK08]

A little math for perspective

 

If you drive the truck for 100,000 miles with fuel @ $4.00/gal:

- a truck that gets a lifetime average of 16mpg will burn $25,000 in fuel

- a truck that gets a lifetime average of 14mpg will burn $28,571 in fuel

Excellent post. That helps a lot.

[KRANK08]

Whatever you do, do yourself a favor after you add the bigger tires and get a custom tune. This will allow you to recalibrate the speedo for bigger tires. and should open up some hidden HP and help with mileage.

Agreed. What's a good tune now? Back in 2000 I had a hypertech tune on my silverado.

[fondupot]

Agreed. What's a good tune now? Back in 2000 I had a hypertech tune on my silverado.

 

Well a popular handheld is the Diablo one. But if you want to get a custom tune check out Blackbear Performance. I had them tune my 2002 Silverado and my dads 2008 Suburban.

 

A little more pricey, but well worth it. You buy an EFI live Autocal from them, then they provide the tuning and you can upload it to the truck. easy peasy.