Need advice on setting TPMS alarms
I just got a Carchet TPMS System for my 5'r which has max/min alarms for pressure and a max temp alarm. What would be good settings for these alarms given a load rating E tire? Baseline pressure is 80...
Forum Discussion
From a tire standpoint...
You do not want to drive on a tire that has less air than needed to carry the actual load. You can also avoid getting readings from your TPMS if you ensure the Cold Inflation Pressure CIP is above the minimum.
Soooo
1. Knowing the actual load on each tire I know the minimum inflation needed based on the heavier end of each axle.
2. The CIP is the minimum + 10%. This gives a nice cushion when the temperature drops a few degrees. At 2% change for each 10F change if you see a 50F change in ambient you probably need to make an inflation change.
3. The low pressure warning level should be the minimum inflation needed to carry the load. Good TPMS will provide early warning if the tire looses a few psi from the running hop pressure and not only warn when a tire gets down to the set warning level.
4. You will probably find a +25% above the CIP adequate for high pressure warning BUT normally that will not be a problem.
5. The 158F high temp is also a reasonable number.
You do not want to drive on a tire that has less air than needed to carry the actual load. You can also avoid getting readings from your TPMS if you ensure the Cold Inflation Pressure CIP is above the minimum.
Soooo
1. Knowing the actual load on each tire I know the minimum inflation needed based on the heavier end of each axle.
2. The CIP is the minimum + 10%. This gives a nice cushion when the temperature drops a few degrees. At 2% change for each 10F change if you see a 50F change in ambient you probably need to make an inflation change.
3. The low pressure warning level should be the minimum inflation needed to carry the load. Good TPMS will provide early warning if the tire looses a few psi from the running hop pressure and not only warn when a tire gets down to the set warning level.
4. You will probably find a +25% above the CIP adequate for high pressure warning BUT normally that will not be a problem.
5. The 158F high temp is also a reasonable number.
