Tire Size Change and PCM/BCM Recalibration Question

[15GMCSierra]

I apologize if this has already been addressed, but I read the entire tire/wheel thread and searched without any luck.

 

I am considering going from OEM P275/55-20 (Rev per mile 655 - 31.9") to P275/60-20 (Rev 630 per mile - 33"). The Techlink makes reference to driveability concerns being addressed for modifications and tire size not exceeding a 4% change. The above change is a little under 4% (2 MPH difference on speed).

 

Has anyone had the PCM or BCM recalibrated for a new tire size? Also, will the new size fit without rubbing (stock)? It appears everyone running different tire sizes have upgraded to the RC leveling kit or a lift. My old Toyota could not be changed because the software was controlled by Toyota. Most guys used either HyperTech speedometer recalibration module or lived with the difference. Thanks.

[RyanbabZ71]

if it is a "stock" gm tire size then they can reprogram your ECM. If it isnt a "stock" tire size then your on your own and you have to go a custom tune/handheld can tune path

[15GMCSierra]

Thanks!

[m1ssm0rgan]

Stumbled across this post... Have you put on the new tires? And, is there any rubbing? I have the 20" wheel option and would like to go with a bigger tire. I just wasn't sure how much bigger I could go without rubbing. Didn't see anyone mention it in other threads either. Thanks!