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#1: 12-08-2012, 09:30 AM
TPMS dashboard light on, tire pressure is fine...???
pfoyle's Avatar
Title: Monkey
Rank: Donating Member
Location: Wilmington, MA
Car: 2018 Audi S4 (stock, for now)
Posts: 1,635
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OEM size for 2010 LGT tires is 225/45/18... in order to get the Blizzaks I wanted for my winter setup, I had to go with 215/45/18 rubber (on OEM rims). I just installed them on the car this week (Tuesday) and filled them to 35psi (front) and 34psi (rear). Last night my low tire dashboard warning light started blinking, and then stayed on fully. Checked pressure in all 4 tires and it is still good at 35/34... and visually all looks fine as well. Light is still on today...

I suppose the base of my question is: can running this slightly narrower tire cause the TPMS to think the pressure is low? I don't really understand why this would be the case, but other than a malfunctioning sensor, I don't have any other possible explanation...

Any thoughts/ideas? Thanks for any help or advice you can provide!
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