Tire pressure display accuracy
07-06-2007, 12:57 PM
#1
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Tire pressure display accuracy
The tire pressure display appears to be 2psi out on all four tires.
Reads 30psi all round when two other gauges say 32psi - anyone else noticed this ?
Reads 30psi all round when two other gauges say 32psi - anyone else noticed this ?
07-06-2007, 03:05 PM
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Yes, TPM on my car is not that accurate either.
I've found mine to be out by up to +0.1 / -0.1 bar at each corner, using a racing standard gauge (Intercomp digital with bleed valve). So what I have done is set the pressures using the gauge, register what TPM says (it's usually 0.1 bar too high on front left, and 0.1 bar too low on the offside rear), and then just use TPM to make sure that I don't have a slow puncture.
I find it very reassuring to have the pressures constantly monitored, given how expensive it would be to run a tyre flat and potentially damage a rim (not to mention the safety aspect!), but given its inacurracy I don't use TPM for actually setting pressures.
Kind regards
Steve
I've found mine to be out by up to +0.1 / -0.1 bar at each corner, using a racing standard gauge (Intercomp digital with bleed valve). So what I have done is set the pressures using the gauge, register what TPM says (it's usually 0.1 bar too high on front left, and 0.1 bar too low on the offside rear), and then just use TPM to make sure that I don't have a slow puncture.
I find it very reassuring to have the pressures constantly monitored, given how expensive it would be to run a tyre flat and potentially damage a rim (not to mention the safety aspect!), but given its inacurracy I don't use TPM for actually setting pressures.
Kind regards
Steve
07-06-2007, 03:54 PM
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Originally Posted by stefan einz
Yes, TPM on my car is not that accurate either.
I've found mine to be out by up to +0.1 / -0.1 bar at each corner, using a racing standard gauge (Intercomp digital with bleed valve). So what I have done is set the pressures using the gauge, register what TPM says (it's usually 0.1 bar too high on front left, and 0.1 bar too low on the offside rear), and then just use TPM to make sure that I don't have a slow puncture.
I find it very reassuring to have the pressures constantly monitored, given how expensive it would be to run a tyre flat and potentially damage a rim (not to mention the safety aspect!), but given its inacurracy I don't use TPM for actually setting pressures.
Kind regards
Steve
I've found mine to be out by up to +0.1 / -0.1 bar at each corner, using a racing standard gauge (Intercomp digital with bleed valve). So what I have done is set the pressures using the gauge, register what TPM says (it's usually 0.1 bar too high on front left, and 0.1 bar too low on the offside rear), and then just use TPM to make sure that I don't have a slow puncture.
I find it very reassuring to have the pressures constantly monitored, given how expensive it would be to run a tyre flat and potentially damage a rim (not to mention the safety aspect!), but given its inacurracy I don't use TPM for actually setting pressures.
Kind regards
Steve
07-06-2007, 06:19 PM
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Originally Posted by TB993tt
The tire pressure display appears to be 2psi out on all four tires.
Reads 30psi all round when two other gauges say 32psi - anyone else noticed this ?
Reads 30psi all round when two other gauges say 32psi - anyone else noticed this ?
When I had the tire shop exchange my air for N2, the TPM read exactly the pressure I requested they use.
