Quote:
Originally Posted by HighlandPete
Problem with the indirect system using wheel speed sensors, a slow puncture can deflate by 20 - 30% before a warning is given. Same if more than one tyre is low on pressure.
We could therefore note a difference, particularly to steering feel, before we ever get any warning of low pressures.
Checking pressures regularly is the only way to ensure all tyres are at the correct pressure, with indirect TPWS.
HighlandPete
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The car has caught me out a couple of times with warnings about low pressure in my right front tire before I noticed it myself. I usually set the pressure at 35 psi, and the warning goes off around 28 psi. If I had been using runflats, I guess the tires would have gone down more before the warning, but it also takes a bigger deflation to be noticeable for the driver.
I think most drivers wouldn't notice before the warning, but if you know how to check it, it is definitely possible to feel it. Easier on a track than on the road.