Thursday, Mar 11, 2010 at 21:01
Is there a max (or desirable) temp that I should not exceed?
That question is not easy to answer as there are too many variables. But at best I can say that a punctured tyre, say a sidewall failure is around 90C or thereabouts once we get to measure it.
So we set our TPMS maximum temperature at 75C and then if the alarm goes off get out and have a look at whats going on
You are asking a linear question which cannot be directly answered as temperature has a direct correlation to pressure and speed. So temperature is simply an indicator, albeit a very good one of impending tyre failure and more so than pressure. The reason for this is that pressure can be maintained, for a short period of time, whilst the tyre is deflating. The reason for this is that as the pressure "slowly" lowers then the additional friction created caused the tyre to be maintained for a while. Then we get to critical mass, low pressure and high temperature and the whole thing falls apart very quickly generally.
So temperature is a single/linear issue. You cannot rely on that single piece of data without other inputs such as pressure and speed etc. Hence the reason why we always recommend TPMS and to monitor temperature more than pressure but always both
Sadly there is no silver bullet for this. Our simple rule is lower your tyre pressurs to suit the track conditions, slow down to suit and drive to the conditions. Oh and there's no such thing as a puncture proof tyre
Regards
RobA
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