What size front runners..

What are you doing with the car, drag racing? What kind of light are you running against, a sequence tree or a pro tree?
A tall tire will make your car APPEAR to be faster cause of the increased rollout with the tall tires. A short tire will do the opposite.
If you are running against a pro light, you need the shortest tire that will keep the headers and oilpan from rubbing on the ground. You need the least rollout you can get for a good reaction time. Really short tires look rediculous on some cars, but they are used for a reason.
If you are on a full tree, and you keep redlighting a little, or are late a little, reaction time can be refined by front tire height, as well as many other things, shocks, launch rpm etc.
Oh ,btw, rear tire height has nothing to do with it.
Edit: my full tree car has a 30"tall front tire, to slow the reaction a little, and my pro tree car uses 22" goodyear frontrunners.