Please, this poll is for 2010 Prius owners. If there is something remarkable about your tires that would make the pressure range different (aka., snow tires, after-market) feel free to share but do include your target pressure. Note, the usual practice is to check the tire pressure every two months and in times of cooling temperatures, a little more frequently. Comments about 'what I found' versus 'what I expected' are always welcome. A short poll, it should be over December 31, 2009. Bob Wilson
Bob, Are all the tires for the Prius 44-45 psi max? If not, would there be a way to indicate in the poll a different maximum air pressure recommendation from manufacturer?
40/38 for the stock tyres. My winters are actually running on 42/40 b/c of the higher max sidewall pressure.
This evening I found my tires at 40 psi. They are back up to 44-45 psi. The last time I checked them was about 2-3 months ago when I had the oil changed ... the standard Toyota tire pressures were found afterwards. Bob Wilson
I couldn't figure out a good way. For example, our 2003 Prius runs Sumitomo T4s that have a 51 psi maximum sidewall pressure. But other folks use different brands with lower sidewall pressures. The only way that makes sense is to ask folks to report their tire pressures actual and maximum ... ugly. The other is some sort of relative pressure to maximum sidewall, "max sidewall -4 psi" or "max sidewall +2 psi". Then we lose the absolute values. I may come up with an approach but right now, it looked to be too confusing. Bob Wilson
Yeah, it's ugly to ask for actual and max sidewall pressures, but it gets the numbers you want. Am I right that all the original equipment tires are 44 psi max? Then you would only need to ask for max pressures for winter or other aftermarket tires.
According to our tire poll http://priuschat.com/forums/gen-iii...61926-what-tires-did-you-get-your-2010-a.html The PriusV (215/45-17) has come equipped with three different tires: Bridgestone Turanza EL400 max pressure 51 psi Michelin HX MXM4 max pressure 44 psi Toyo Proxis A20 max pressure 51 psi Information on pressures for Michelin and Bridgestone from the TireRack web site. For the Toyo's from the tires on my car. I use 48 lbs in my Toyo's; if I had the 44 psi tires I would use 42 lbs.
Is there any correlation between high tire pressure and the existence of the easily activated anti-lock brake issue?
Just a comment - I've found my tire pressures tend to "naturally" go down by about a pound per week. I've taken to checking them at least once a month, and they are usually down 3-4 lbs/tire. When I let them get down that much, I can see the gas mileage hit clearly - about 2-3 MPG per tank. Make mental note to self - check tire pressures every couple of weeks! Tires seem to last longer at 40 PSI, as well, from what I've seen anecdotally.
I'm using a 78% nitrogen, 20% oxygen 2% misc mix. If the claims about air leaking out faster than nitrogen are true, I will soon have nearly pure nitrogen in my tires.
