Hi all,
I read a ton of this forum as well as on , lifts, lowering forums, trying to determine what would be needed to run bigger tires. I like the look of the level kits but I also love the way the stock truck handles and I don't want to risk changing that or wearing out front end parts. I do however like a bigger tire. I have a tire machine in my shop so I decided to get some different used tire sizes from the recycle drop off and try them. I found 275/60 R20 fit well with no rubbing on a stock suspension. Subsequently, I put on Hankook I-Pike Ice radials on the original snowflake rims to use for the winter and try them out. The rims were a special order on a previous truck, 2014, and I kept them for the 2016. They didn't last very well with lots of chrome peeling so they will be my winter wheels now.
I just wanted to share 2 things.
If you don't want to change your suspension, 275/60 R20 work fine
If you do go to a taller tire, it definitely effects the driveability. At least in my truck with the 8 speed. Although the tires are only 3% bigger in circumference I definitely notice it when starting out and on the highway it tends to lug a little.
I still like the larger tires though, it seems to ride smother and I like the look. I may drop the rear a little in the spring with shackles to lower the back when I put on some all seasons with new wheels.
2016 Sierra SLT Crew 4x4 6.2ltre
Hankook I-Pike 275/60 R20
Stock rims