as they say the smaller the tire the faster you can go..
the 10.5 outlaw guys run mid 4 second 1/8 mile e/t's on 10 inch tires...but what they do..is stretch out the tread pattern by using say a 12 inch wheel and place the 10 inch tire on the wheel..flattening out the thread pattern.
i think he would be much better off running a wider rim (12/14 wide) with a smaller tire and stretching the thread pattern if anything...
i would do away with the 10 inch wheel irregardless before i went putting $500 in a set of tires for that wheel....
12 inch wheel minimum....
my 2 cents..
__________________
Bjuice..
"I'M YOUR HUCKLEBERRY ! "