LeftieBiker wrote: ↑
Fri Feb 12, 2021 11:49 am
The video is a good idea, but unfortunately it encourages people to under-inflate their tires to the too-low 36psi on the label. 38-40psi is much better for all versions of the Leaf.
38-40! personally, I tell people 44psi and truthfully if the max inflation of my tires were higher I'd go a couple pounds under max. One reason I tell people this is they tend to add air and then not recheck for a long time. A tire will never really gain pressure, mostly lose so I feel safe running near max inflation pressure when adding air. Note I guess if you were in a very cold area 10F, filled your tires to max a say and then drove down a mountain where it was say 75, I might change my suggestion but otherwise I feel safe at max or a couple pounds below.
What I don't understand is say I fill my tires to the max in the fall, maybe 70F. Then a couple months later it's 10F out and I recheck the tires and they are 10 or more PSI lower. I then fill the tires at this 10F to max inflation, if I then recheck the tires in the spring when it's 70F it won't be over-inflated but rather still at max or a bit below. I'd think the tires should be overinflated but they never are. I'm guessing what's going on is the tires are constantly losing just a bit of air, not a lot but just enough so the expansion from cold to hot is never really seen on the tires. It's that reason for the most part I suggest max inflation and don't really worry about it, especially on a vehicle as heavy as a Leaf(for its tire size) as I want its sidewall flexing as little as possible to avoid undue wear.
Our latest Prius tires show a 54max PSI on the tire, those I only fill to 51/52 as 54 does seem quite high. Also note I'm assuming you have an accurate tire pressure gauge as I have, if you think it might say read 5psi low or something then don't inflate to max, then you'd actually be over by 5psi which probably wouldn't be good.