My wife purchased a Wireless Tire Pressure Monitoring System for me (Xmas present). I have never heard of this product before (TireGard) from www.bigbikeparts.com A friend said it used to be called tyredog. It appears to be easily installed (less than 3 mins), runs totally by batteries. I was going to the the TPMS by Kissan Technologies. Does anyone out there have experience with aftermarket TPMS ? This system (tiregard) has 1 keychain remote and two screw on sensors that replace your valve caps. I want to have reliability even though I always check my tires. I had my rear one go flat while riding and didn't know it until I stopped as a gas station. Any comments would be welcome.