Width does mean side to side.
Mean
width means how wide something is
Yes it does No it doesn't - breadth is the word which means width in mathematics.
They are nominal.
Nominal size is the size of the largest aggregate in a grading.
Width does mean side to side.
The aspect ratio is the tires profile. For instance, a tire with a 60 aspect ratio means that the tires hight from tread to rim is 60% of the tires nominal width. The lower the aspect ratio # the wider the tire.
Mean
width means how wide something is
Width has a lenght, but it doesn't mean lenght, because there are lenghts for distance, height, width, depth, and so on.
A nominal interest rate is an interest rate that does not factor in the rate on inflation. Nominal interest rate could also refer to an interest rate that does not adjust for the full effect of compounding.
Width is a noun that means breadth or wideness.
If by "width" you mean diameter, multiply the width by pi. Pi is roughly 3.14.
Generally speaking, the tyre section (width across the sidewalls) is stated clearly on the sidewall. It should not be less than 90% of the rim width or more than 1.4 times the rim width. The nominal diameter of rim and tyre must be the same. Bert Meinders
That means Nominal Diameter is 300 mm
NB (nominal bore) is the European designation equivalent to NPS is DN (diamètre nominal/nominal diameter/Durchmesser nach Norm), in which sizes are measured in millimeters. NB (nominal bore) is also frequently used interchangeably with NPS.You can refer more details herehttp://www.piping-engineering.com/nominal-pipe-size-nps-nominal-bore-nb-outside-diameter-od.html