Quote:
Originally Posted by Blue Bowtie
(1) One critical qualifier is missing from that statement.
It would be important to mention "At the same inflation" because that
is the only condition under which it is true.
(2)As experienced people may have come to know, wider tires require
less inflation to support a given load. THAT'S where the footprint
increases and the traction advantage begins.
(3)If you think that concept was just pulled from the dark side of Our
Fearless Leader's personal space, check with aircraft operation manuals
since Elizabeth was born, the remote inflation controls on off-road
equipment going back to the 1930s, and similar systems (still in
existence today).
(4)The above statements might apply to the Continental 4-ply budget
tires on your Toyonissahondubaruishi "sport" sedan, but are not
universally true as might have been the inference made by many
readers.
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(2) "wider tires require less inflation
to support a given load. "
I do have to wonder about that second paragraph. Because according to my research of tire pressure websites such as tirepressure.com, etc, a lot of car makers specify
higher cold cold tire pressures on trim levels of models with wider, lower profile tires.
Take my 2010 Honda Accord, EX trim:
2010 Accord LX - tire size 215-60R16, cold inflation 30psi
2010 Accord EX - tire size 225-50R17, cold inflation 32psi
My contention is that higher pressure, at least 1psi, is needed to maintain full contact with the road across the full width of the wider rubber.