Tire monitor systems - aftermarket.

My brother bought this one for his tow rig and the 5 car stacker. It saved our backside last summer when we were about an hour outside of Cheyenne, Wyoming after driving 24 hours straight from NorCal on our 36 hour drive to Road America. The passenger steer tire was going flat in a hurry, the alarm was sounding and we were like WTF is that sound unplugging all the cords to realize it was the tire alarm…

This one shows pressures and temps.

https://www.amazon.com/dp/B086V16NHR?tag=fabo03-20