Ask Honest John

Most recently answered tpms questions
I have a Toyota Yaris Cross and recently the in-car tyre pressure readout keeps showing a number of tyres as being below the required pressure. However, after driving the car for a while, the tyre pressure...
Will my 2008-registered Hyundai i30 fail an MoT if it has a warning light indicating low tyre pressure even when tyres are correctly inflated, or a warning indicating a fault with the TPMS system? I have...
Does he new BMW Active Tourer M Sport has tyre pressure monitoring fitted as standard?
How sensitive are tyre pressure monitors? My wife’s Skoda Fabia’s tyre pressure warning came on recently and when I checked the pressures they were all a long way out. Is a slight pressure decrease over...
There is a fault with my tyre pressure sensor. The tyre pressures are correct but the warning light keeps coming on. Would this fault invalidate the MOT?
Can you tell me if a faulty tyre pressure monitoring system (TPMS) is an MoT failure point?
Do you have an opinion on tire pressure monitoring kits? If so, do you recommend any particular make?
At a recent service for my Volvo XC60 I asked for the wheels to be swapped back to front to even out wear - as suggested in the Volvo handbook. This was not done as I was initially told that it was not...
Are aftermarket tyre pressure monitoring systems safe and how much do they cost?
Is a tyre pressure light showing an MoT failure even if the pressures are correct? Can I just disconnect the light?