Here is why I am asking: More weight does give you more grip and traction when launching off the line (ask a drag racer). More down force gives more grip in corners (ask an Indy car driver why they have wings front and rear). I'm not sure if the same principles apply to 2 wheeled vehicle. CBR600RR 420ish lbs with Angel GTs VFR1200 590ish lbs with Angel GTs. On the CBR, I can get both tires to break loose and go into a small controlled slide. I haven't reached that point yet on the VFR. I get that 590 lbs is going to require more lateral grip, but the weight is also creating a larger contact patch and more downward friction due to gravity. There are a few factors at play. I know my limits pretty well on the CBR, and still trying to find them on the Viffer.