TPS question
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Joined: Dec 2016
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TPS question
So this is a weird one. My 2017 base has my tire pressure label set at 35PSI for my MPSS. 2014,2015,2018 and 2019 for the MPSS are set at 30psi. Somehow 2016 have both 35 and 30 PSI for the same tire.
So because I have 35PSI tires my TPS goes off at 27-28 psi. The question I have is for the 30 PSI cars do I assume you don't get the warning until 23-24 PSI? The weird thing is that these tires are all the same. The early base car had 18 and 19's and then I think as of 2018 and 2019 they went to 19's and 20"s if I'm not mistaken. But even the early 2014-2016 Z-51's had 30psi in the 19's and 20's. Did GM for a couple of years try to up the tire pressures to boost gas mileage a bit to help with their CAFE standards. I will tell you 35PSI is way too hard. I run mine at 30PSI and don't worry much if I get a warning at 28PSI which is still fine. I bet you guys that have the 30PSI don't get warning untill it is much lower than mine. Same tire, should have same pressure across the board in my opinion. Anyone shed some light on the inconsistencies?
So because I have 35PSI tires my TPS goes off at 27-28 psi. The question I have is for the 30 PSI cars do I assume you don't get the warning until 23-24 PSI? The weird thing is that these tires are all the same. The early base car had 18 and 19's and then I think as of 2018 and 2019 they went to 19's and 20"s if I'm not mistaken. But even the early 2014-2016 Z-51's had 30psi in the 19's and 20's. Did GM for a couple of years try to up the tire pressures to boost gas mileage a bit to help with their CAFE standards. I will tell you 35PSI is way too hard. I run mine at 30PSI and don't worry much if I get a warning at 28PSI which is still fine. I bet you guys that have the 30PSI don't get warning untill it is much lower than mine. Same tire, should have same pressure across the board in my opinion. Anyone shed some light on the inconsistencies?
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My understanding is that GM used the 35 psi label to get another .01 MPG out of the effected cars; even though it degrades the ride, handling, and tire life.
They soon went back to the 30 psi label on new cars, but that doesn't change the setting on the Low Pressure warning. Bummer.
Most sensible people use the 30 psi setting on a C7 regardless of the label on the door frame.
Check with a friendly and informed Corvette Tech, there may be a way to change the calibration on your warning.
They soon went back to the 30 psi label on new cars, but that doesn't change the setting on the Low Pressure warning. Bummer.
Most sensible people use the 30 psi setting on a C7 regardless of the label on the door frame.
Check with a friendly and informed Corvette Tech, there may be a way to change the calibration on your warning.
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I have always ran 30 psi cold in my tires. Provides a good ride and handling.
