Oh why, oh why can we not edit headings???
The tires are optional oem on the car - an 07 GL450. The TPS is very sensitive, and keeping the tires at 32 in the front is very difficult without tripping the TPS.
Does anyone know if the door stickers are super conservative for some reason? There's quite a bit of discrepancy between 51 and 32. This is a heavy vehicle, the tire are enormous (275/55/19), and my entire family lives in this thing - I don;t think it should be so hard for the owner to determine the correct pressure. The dealer defaults to the door sticker, even though he admits the car comes with quite an array of oem tires.