Just kick the tyres before you ride & maybe get an old pencil type tyre pressure gauge to confirm
TPM, load of bollox and waste of money, manufacturers just conning you out of even more money
What makes you say that as i have found them a good addition an will always use them on future purchases , ordered them on the V4 along with the fuel cap and alarm , are those a load of bollox as well.

I could hear his voice as I read that and see the blurred out tach




