Ideally we'd like to have published, peer reviewed and duplicated, studies to go on. Unfortunately, we don't seem to have that.
What we do have are some published studies showing that higher inflation pressures improve rolling resistance - and anecdotal reports to support this - but there doesn't appear to be any published info on the affect inflation pressure has on steering, traction and wear - and the anecdotal reports is mixed.
I think eco30BMW has a point. If a statement is going to be made, it ought to be backed up by data - and if the data is anecdotal, it ought to be consistent. It might be better to rephrase the statement this way:
Quote:
Increase tire pressure (but do not exceed max sidewall!)
..........There are mixed anecdotal reports about improvements in other properties. Some folks report improvements and some report degradations.
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