In one sense Gort is right -- you ARE taking a risk. For several weeks your bike will handle quite a bit differently and YOU SHOULD BE VERY CAUTIOUS during this hind-brain retraining period of time. Your ass is on the line if you take it out into heavy traffic too early and it is your ass, after all.
Give yourself time to explore rapid braking and hard turns before you go out to play on the freeway to find your high speed rumba point.
Read the whole thread -- note my mentioning just how the new sensations make you feel when you first feel them.
(you too will need a fresh set of undies at some point in time) Remember to jack your preload on your shocks up all the way to the highest setting (you have reduced tire clearance) and start out at 33 pounds of air pressure in the tire for max stability. The tire below is fully broken in (took more than a year to do so) and is ready to go anywhere and do anything.
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1179508142 (read the whole thing)
Beyond that, every list is equipped with at least one nay-sayer and a vocal peanut gallery. Generally both chime in on "car tires on a bike" as it seems like their natural turf to them.
Sometimes you have to consider if the opinions are from people who have done things or from people who are equipped with fingers and a keyboard and a vocal opinion. The way to sort them out is to look in the Tech Section for the folks who have actually done stuff and contributed real content to the site.
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Now, if I told you that riding a motorcycle fast on mountain roads required you to give up on using your rear brake for quick stops -- would you listen?
You need to rev your motor more and use engine braking to slow down if you need to and ALWAYS ALWAYS concentrate on leaning on through the turn ..... never give up, keep on leaning -- keep on leaning ---
Oldfeller