Sorry I'm late, hehe...
The handleing improvement is just incredable! I can take corners 20-30 mph faster than I could before. I might be able to get some video this next week of it'* handleing capabilities. The wider stance looks really wicked on the Bonneville too.
Mine are actually a bit worn now so it'* like running on racing slicks. WOT from the start and they damn near stick it! Squealing thru corners, almost never happens.
Now the down side of being so wide. Winter, enough siad. Ice, snow, even large puddles. Hydroplaining is easy to do if your not careful. The softer material in my tires also wears a bit faster than normal (burnouts don't help much either).