The 5x9 that you towed with the x5 has an empty weight of 1240lb. The 6x12 that you towed with the wk2 have an empty weight of 2290lb. That's over 1000lb heavier. Also, the width of the 6x12 means it will extend past the side of the wk2, causing additional wind resistance. Whereas the 5x9 would tuck behind the x5. Poorly adjusted surge brakes like Jim said could also contribute to this.
The braking distant part is baffling though. The 6x12 has surge brakes, so I'm not sure why braking distance increase would be greater than the x5 towing the 5x9.
In any case, nice Vespa. Looks a little funny in the giant 6x12 though.
Peter
The braking distant part is baffling though. The 6x12 has surge brakes, so I'm not sure why braking distance increase would be greater than the x5 towing the 5x9.
In any case, nice Vespa. Looks a little funny in the giant 6x12 though.
Peter