I had SP5000 previously and now have RE730 on my 91 TT. I'm very happy with RE730 compared with SP5000. I drive everyday 60 miles rain or shine in Seattle area and sometimes drive hard. RE730 excels in both wet and dry conditions. I just checked Bridgestone web and could not find RE730 for TT. They may have drop the size since it is not a popular size anymore.