What are Your Tyre Temps

Cooch · Member

What are Your Tyre Temps

Peter_n_Margaret · Guru

Yes, the sun and ambient temperature will make a significant difference.
I would not give much credibility to any valve mounted TPMS to provide a temperature of the internal sidewall and belt structure of a tyre. How could it?
I use an infra red thermometer to check tyre temperatures from time to time when we have reduced pressures significantly for sand driving. I consider a reading of 70C to be the absolute maximum to avoid permanent casing damage.
Cheers,
Peter

Craig1 · Guru

My Safety Dave valve mounts vary in pressure about 3psi, no apparent reason, this could be reading my compressor gauge, or just anomaly.The temperature evens up after 20-30km and it seems to be reasonably accurate with the put your hand on the tyre and wheel centre test.Runs around 48 at 100kmh highway. Cold start can be 10-12 degrees different, ie East side early sun will be ambient at say 7 degrees, west side in shade will be 1 - 2 degrees.

Cooch · Member

Thanks Craig & Peter, that was the info I was after

Aus-Kiwi · Guru

Isnt there a system where you adjust tyre pressures measure temps till you get the correct temp / tyre pressures ? Or www.bigwheels.net.au/tyre-chart

Craig1 · Guru

There is A K, but I just figured mine was close enough, and no alarms going, which was my main reason for purchase. The piddly pressure gauges and the fact that you then have to remove sensors to change pressure. So slightly slack but happy enough.

StewG · Senior Member

Like Craig, I also use a Safety Dave TPMS and find that the temperature tracks ambient plus a bit. On a 40+ degree day on dirt roads, the TPMS could indicate as much as 55 degrees. I treat the TPMS as an indicator only, not as a precision instrument. In fact the TPMS pressure disagrees with my compressor gauge, but only by a PSI or two. Who knows which one is correct... The temperature indication also varies according to which side of the vehicle is on the sunny side, as Craig has said, and that also influences the pressure. Fortunately, I have never yet had a catastrophic tyre failure, but only a slow leak on one caravan tyre. The TPMS alerted me to that anomaly so that it could be fixed in a timely manner.