[SuperHart]

It's really not that simple to choose the proper tire. One consideration I didn't see mentioned is tire diameter. Of course, you want a wider tread in the rear than in the front. If you stick with the same aspect ratio for both front and rear, the wider rear tire will also be taller and therefore cause the car to appear tilted forward. The taller tire may also throw off your speedometer calibration. Remember, your speedo is set up not only for a specific rear end ratio but also a specific tire diameter in order to maintain accuracy. Go with a taller rear tire and your speedo will read slower than your actual speed.

All that said, going to a 50 aspect ratio rear tire will allow you to run a wider tread without using a taller tire. You want all four tires to be approximately the same diameter or height so the chassis sits level. Assuming a 15" rim diameter, I recommend 235R60-15 in the front and 295R50-15 for the rear running on 8" and 10" rims respectively. They will ride better than a bias ply tire on the street and give you better longevity. I know I will take some heat here but I have used the Cooper Cobra tires in the sizes above with great results. They are relatively inexpensive and I kinda like the Cobra insignia molded into the sidewall. In my opinion, there is no sense in using a track only tire on the street other than getting that neat GOODYEAR sidewall. At one time I ran a set of Goodyear Billboards. I had to change the entire alignment on my car, they rode like truck tires, I didn't like the way the car handled and they picked up and threw every bit of gravel they ran over causing many little chips and dings in my paint. Because my car is a cruiser and not a racer, I soon returned to the Cooper Cobra radials and have been very pleased ever since.

Just my $.02.