BSR Sedan 28mm- XX Pink It is finally here, BSR's 10th Scale Foam Tire Compound information. After acquiring BSR I had a lot of work to do in this area to find out exactly what was needed and how to organize it. With the ever changing racing environments and equipment we race and use today, we at BSR set out to get the job done. After nearly 2 years of new R&D we have accomplished the goal. R&D is still on going and always will be on going to continue to keep BSR as a top performing tire with winning results.