Based on the differences in track surfaces and track preperation from here in the U.S. to those tracks in Europe, based on actual expereinces when I was assign to duty in Hanua, Germany. I would buy a bias ply tire, not a radail No matter the tire size I built and raced a semi fast pump gas street and strip Duster(ran high nines in the 1/4 on pump gas motor only with the exhaust and air cleaner on ) and used both M/T ET Street(bias plys) and M/T ET Street Radials of the same exact size as well as using a set of M/T 10.5x31x15W drag slicks, the slicks where the best at the track as far as ET and MPH, the Radials where faster on a good track than the bias ply tires where but on a not prepared well track and on the street the bias plys where way better Buy the biggest size that will fit on the car and use the widest rim you can get on the car, even if the rim is wider than the tire thread width is IHTHs
IHTH