The direct tire pressure monitoring system utilizes wheel mounted sensors that accurately gather pressure and temperature data from the vehicles tires. This data is then interpreted by the vehicles ECU and a potential low tire pressure warning is issued if one or more tires is underinflated by 25% or more.
The indirect, ABS-based TPM system interprets tire pressure data based on the rotational speed of each tire.
So why do original equipment manufacturers choose direct TPMS over indirect? Read on…
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