Hmm. Its too one dimensional to say increasing the size of the tire will improve handling.

Why not then therefore stop at 8 inchs and go to say 10 inch tyres. It depends on the weight, function and type of vehicle and its intended purpose.

For example in my rotax sprint kart theres an optimal tyre width for handling. Going wider will not help but hinder the kart.

For street use 7 inches in enough. Thats the point im making. i know a lot of you like the look of wider tyres. Im a function over looks kind of guy. cheers