No they dont handel worth a crap. But the 300 tire is nothing new.. Heck Avon now has a 330 tire out,Bourget bike works uses it on most of the custom one offs they build.. As for making a bike handel? Well lets see a 300 rear tire,with a 20 over front end with 50 or rake,,yeah not what I would take anywhere buy a drag strip. The frame i just bought is set up for a 300 rear and a 14 over springer fornt end.but the key is the bike is over 10 feet long,it is a rigid,but was desgined with a bit of flex in the frame so it wont ride as rough..