2019 20 inch wheels on a 2015??

[2004lebanshee]

Will they fit? I've heard rumors 14-15s wollnt fit a 19 but not sure about the other way around.

[L86 All Terrain]

Bolt Pattern is 6x139.7mm, same as it has been since the 6-bolt GMT400's. Should fit fine unless they changed the hub size. Most wheel manufactures ask the intended vehicle and provide you with a hub-centric spacer as they machine the wheel for the largest hub then provide you with a spacer for smaller hubs. I can't tell you for full certainty. But I am 95% sure they would not have changed the hub size on the K2-T1 refresh. Should be good to go my guy. 

[2004lebanshee]

Thank you. I have read some older wheels dont fit newer years because the brake caliper is bigger on the newer trucks. Haven't heard the 19s down dont fit. We will see.

[SirenRed16]

Thank you. I have read some older wheels dont fit newer years because the brake caliper is bigger on the newer trucks. Haven't heard the 19s down dont fit. We will see.

I believe 2014+ need a minimum of 17s to clear calipers

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[2018GMC]

17” wheels are the smallest that will fit on 2007.5+. I went from 20” K2xx wheels to 17” GMT900 wheels on my 2018 no problem. 

 

The clearance is so close on the front calipers, you can use only one layer of stick on weights. Try and stack them and they hit the calipers. Lots of room in the rear.