I have payed very close attention to this. I was concerned about this when considering my purchase options. This setup doesn't seem to scrub any worse. I have tried to listen to the scrubbing when parking versus my older trailer. The shoulders on the tires show no abuse. The tracks on the cement are about the same as the older trailer.
I know this sounds counter intuitive, but the wider setup seams to track through a turn vs scrubbing.
For your consideration...and thoughts.
'04 Dodge 3500, 5.9, 4x4, Quad cab
'74 Ford Bronco - currently frame off
'03 Outback 25RSS, SOLD, flipped axles (great dry camping trailer!)
'11 Lacrosse 296 BHS, 2- 6V batteries