Our latest PN Racing tires are results of over a year of testing and research. We have created these two series of new compound, that are specifically design for running on the most common racing surface. We also incorporate new tire testing method and grading system. These tires are also very consistent form batch to batch. Simply the best tires on the market right now. R Series: For RCP and similar foam track, they have excellent tire life with very high grip. Ord Pris 39:-