monroepaul

For HPDEs this year I ran 17 x 11 in the back and 17 x 9.5 in the front with slicks. I need a new set of rubber because I completely chunked them on the last track day 2 weeks ago. My question is should I replace them with new slicks in this size. Or should I use the original 18 x 10.5 and the 17 by 9.5. I even have another set of the 18 x 10.5 that I have drag radials mounted on. I've seen people in this section talk about running 18 x 10.5 all the way around and I was wondering if there is any modification I need to do in the front to run this setup?