Zooms3

I just bought my first RX8 last thursday, 9/12/13. TPMS dash light came on today and ALL 4 tires have 32lbs?? Any ideas?

kevinande

One or more sensors malfunctioning? What is the year and mileage on the vehicle?

paimon.soror

iTrader: (15)

possible that the batteries on the tpms are on their way out depending on car age

Zooms3

2011 RX-8 with 8,000 miles.

RIWWP

iTrader: (2)

Measure with the tires hot and measure with them cold. They can swing up to ~4psi between hot and cold, and that can easily be enough to push the pressure outside the target range.

Jedi54

iTrader: (7)

zooms: check the tires first thing in the morning before you leave as tire pressures rise in heat.

IF they're all still 32+, it might be the sensors themselves but I doubt it considering the low mileage

Zooms3

After checking all four tires last night and posting here to look for the solution, It never occured to me to check the most obvious-"OLD TIRE GAUGE" It worked great all these years, but it failed to tell the truth. I bought a new gauge and found that the old one was off by aprox. 5/6 lbs. Thank You Zooms3