Checks . . . I have TPMS systems from Hawks Head (western Canada) on both my FJR and Super Tenere. The ST has the slightly newer 'Moto Track Cruiser 2' model which has a rechargeable display unit and smaller stem units. They recommend NOT using with rubber stems so I changed to steel stems on both machines. They display the pressure quickly, sometimes while still in the garage. After returning from my Denver Iron Butt ride (3500 miles in 4 days) I noticed a warning signal and replaced the rear sensor battery (a CR1225, not in most stores). Then replaced the front also. Takes 1 minute. Yes, the sensor need to be unscrewed to air up the tires, but a small annoyance compared to the benefit.
Systems (both) works beautifully and I watch the pressures rise as the tires warm up. Surprising how much they will increase, as much as 6 - 8 PSI from dead cold to high speed on a warm day. Also, very good phone tech support from Hawks Head. HIGHLY RECOMMENDED!
Stuart, Richmond, VA