My front Metzeler was defective when my Speedmaster was new. I had all kinds of weird balance/vibration issues at various speeds, and the balance was good. The head bearings were checked and were also good, and the forks were also checked. Swapped front wheels with my wife's Speedmaster, and the problem went away. A new tire was installed, and the problem was solved.
Tape weights are fine. You shouldn't have any issues with them or the balance of the wheel. Been using them for years on my cars, and m/c's with good success.
TIP: Should you wish to remove the tape weights at some point, use a strand of dental floss to cut the weights off, then use WD40 to dissolve the glue/foam left behind. You don't want somebody trying to remove them with a screwdriver!!
H.
