been using tpms for years now ...several times ive been warned about a puncture in good time ..display flashes red and beeps ..yes you can feel a gradual deflation but serously the v650 is a 115mmph motorcycle and i cant get me head around why you wouldnt want a early warning of a puncture ...25 quid buys a reliable accurate tpms that has the bonus of checking your tyres every ride with no effort ....ive had dozens of punctures over the yaers as i ride a lot of duel sport and finding out the old fashioned way is not much fun
safety wise a puncture is right up there in terms of danger so i have mine right in my eyline where i can see the red flashing warning light
i were out in wales recently and the alarm went off showing 32 psi //30 seconds after i stopped it was down to 4 ....four plug worms and a can of holts still did not seal it but got me to the hotel ....slash puncture 15mm wide...so there i am with a slowleaking tyre and it was nice to be able to keep a eye on the pressure...i started at 50 psi and when i got to the digs it was down to 29 ..next day i was able to get the bike home and having that moniter was great as i coiuld see the pressures were safe between stopping every twnty miles and re inlfateing
any way its up to the individual but ..if you were riding at 80 mph and somone tapped you on the shoulder and said you have a puncture stop now you would be very grateful i think ....these little machines do it for you and for 25 quid its a no brainer to me .i were ont little bike a while back and its pitch black and lots of bendy turns ..check out 41 sec on the phone video and tell me its not agood idea ...id encouage anyone to have one as i think they are a brillaint safty warning ,,having had em for a while i dont like to ride without them