Q Are tyre pres­sure mon­i­tor­ing sys­tems worth it?

Motorcycle News (UK) - - Garage -

Tyres can de­flate nat­u­rally at up to 2psi per month, so if you aren’t in the habit of reg­u­larly check­ing your pres­sure, a tyre pres­sure mon­i­tor­ing sys­tem might be worth get­ting. If you are un­lucky to suf­fer from a sud­den de­fla­tion, you’ll feel the han­dling de­te­ri­o­rate rapidly. The real ad­van­tage of a mon­i­tor­ing sys­tem is if you suf­fer a slow punc­ture, es­pe­cially if you are on a long run. Then you might com­pen­sate for the changes and the loss of pres­sure only be­comes ap­par­ent when you are on a high­speed stretch or tip­ping it into a sharp bend on a moun­tain road.

There are two types of sys­tem; the orig­i­nal equip­ment set-ups of­fered by the likes of BMW, Kawasaki and Tri­umph with bat­tery­pow­ered sen­sors mounted in­side the tyre, either in­cor­po­rated with the valve or strapped to the hub, and af­ter­mar­ket of­fer­ings, which use a sen­sor in a mod­i­fied valve cap. Both types have a pres­sure sen­sor chip that senses tyre pres­sure against a built-in vac­uum to give an ab­so­lute pres­sure read­ing which is then trans­mit­ted to a dis­play unit.

As well as is­su­ing alerts as the pres­sure changes, and show­ing the tem­per­a­ture of the tyre, the high­erend sys­tems al­low you to cus­tomise pres­sure thresh­olds and mon­i­tor tyre pres­sure trends over days and weeks, spot­ting a slow leak be­fore it be­comes a ma­jor is­sue.

The valve caps might not fit be­tween the valve stem and brake discs on some bikes, like Du­cati’s Di­avel and Mul­tistrada, but the bat­ter­ies are easy to change, un­like the bat­ter­ies in the wheel-mounted sen­sors, which are sealed in.

Tyre pres­sure sen­sors are com­pul­sory in Mo­togp af­ter Loris Baz’s tyre dis­in­te­grated at 200mph

Af­ter­mar­ket sys­tems are avail­able

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