With the new Falken Azenis RT660 tire being the spec tire for the Solo Spec Coupe (SSC) class, it was noted that adjustments to the ProSolo Index (PSI) factor for that class may be needed throughout the 2020 season. Following the 2020 Tire Rack SCCA Great Lakes ProSolo this past weekend, it was determined that a tweak was needed. The new PSI for SSC will now be .798. The full ProSolo rules including the PSI can be downloaded on the Solo Rules page - https://www.scca.com/pages/solo-cars-and-rules