In article , Boltar
writes
Tube stock and surface stock are approximately the same width, it is only
Not true , surface stock is a foot wider which amounts to a lot more extra
room inside the carriages.

They are approximately the same width. Note that both tube and D stock
have 2+2 seating.

A stock is 3+2, but A stock is far too wide for most lines.

You don't need hindsight to know that bigger trains = better carrying
capacity.

No, since it's not necessarily true.

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