I just replaced my wheels and tires with larger rims and oversized tires. Can't get the TPMS to reset. Original tires had 80 psi and the new larger ones require 65 psi. Any suggestions?

 

Welcome to DF. First, before anything else, please read this.

I am assuming you meant 2010 Ram, and not 2100 Ram? (Fixed it for you.)

I will move this to the 4th gen section for you.

 

IIRC you cannot reset the value on an OE TPMS system without using dealer software. There are some legal implications for where the TPMS has to read low... I know all 2008 and most 2009 G8s were set wrong from the factory and there was a recall to fix it... but there was no way to do it a consumer.

 

A Diablosport Predator will allow you to change the threshold all the way down to 0psi.

 

Just use light load inflation feature.