OK, here is the deal. I'm going to Englishtown on Sunday and I have a problem. I only have 2 sets of tires. I want to use the tires that will give me the best traction for that day.

One set is mounted on 17x7.5 rims and the other is on 14x? rims.

Thanks in advance. BTW, this is will be my first time at the track... got any pointers?