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New truck time for lift and tires

BabyJesus

By BabyJesus
in Tires, Wheels & TPMS

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BabyJesus Enthusiast

BabyJesus

Posted
Posted

Hello my fellow Silverado/Sierra owners, I have been reading through your forums and I am glad to say I have finally joined given my recent purchase of my new 2011 Silverado. It's got the 4.8, 3.42 gears. Okay so here is my question. I am going to be towing an 18'ft boat and I have already ordered the RC level kit, thanks to you guys on here. My question is do i go with 275/70/17 to be safe given the motor and gears or bump and do the 285/70/17? Anyone have the 285's same motor and gears? Is it a total dog, expereinces? How bad with the tire change affect shifting in the tranny?

 

I am planning on the Black Bear tuner to help compensate.

 

Thanks for any advice,

Andrew

BabyJesus Enthusiast

BabyJesus

Posted
  • Author
Posted

It weighs about 3000lbs fully loaded.

 

I tired to put a pic on here of my truck but it was too big of a file. It is a 4x4 LS Crew Cab. Stock tires 265/70/17

Stevens03 Senior Enthusiast

Stevens03

Posted
Posted

ah.. you shouldn't hardly know its back there. :thumbs:

 

Now when you bump up in tire size you may want to look at a gear swap since you don't have the 6-speed. 3.42's a little weak, 4.10's would be a better choice for that size tire :thumbs:

yukon25008.1 Senior Enthusiast

yukon25008.1

Posted
Posted

the leveling kit will make it look great but you might want a little more,

SOme companys offer a 285 75 17 its like 34" tall X 11 wide

I have a 5 speed allison with 4:10 rear and its not to much..with a 6 speed tranny i think 4:10,s for you would be great. Maybe a comp cam then the black bear tune..

Im going with long tubes headers and a raylar cam..not sure if raylar makes anything for the smaller engines, my girlfreinds 5.3 tahoe has edelbrock headers and they work great

latreille89 Enthusiast

latreille89

Posted
Posted

The truck will pull it fine stock, the tires may make it a bit more difficult but it'll still pull just fine. I would go with a 275 for less strain. If you are pulling 3000lb twice a week then I'd consider changing the gears but in the end there shouldn't be an issue.

BabyJesus Enthusiast

BabyJesus

Posted
  • Author
Posted

Thanks for the replies, i was thinking the same thing with going 275 and too not totally kill the torque in the motor. Also, do you guys normally pull with o/d or 3rd?

Stevens03 Senior Enthusiast

Stevens03

Posted
Posted

You having the 4-speed, you'll just have to judge it for yourself. If the trucks constantly hunting for gears, then yes... If it's not... then no. Use the tow/haul button... it works :thumbs:

Big Whiskey Senior Enthusiast

Big Whiskey

Posted
Posted

The 275's will suck less power than the 285's. My old '06 had the 5.3, 3:42's, and 4-speed. I ran heavy 285's....and it was a dog. A tune will help....as well as towing in 3rd so it's not hunting for gears all the time.

newdude Senior Enthusiast

newdude

Posted
Posted

The 4L60 should do you good. Service it as required, depending on how you use the truck and it should do good. Any issues with anything, just exercise your warranty.

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