Torque converter

LXGuy may be familiar with this, but for others....Running a wheel that is as wide or a little wider than the actual tread width of the slick can allow for using more air pressure while still maintaining a full "footprint". A lot of Stocker racers use 10" rims with 9" slicks. Depending on the car weight, HP, suspension and "hit", I've heard of pressures anywhere from 16 to 30 lbs! That helps stiffen the sidewall and minimize 60' loss from the sidewalls wrinkling too much! I run 21 lbs in my Hoosier lightweight radials.