Well, my data point is the high beam filament, which has never broken on any of the bulbs that I have had to replace. My bike didn't have provisions for high beams so that filament was never hot. Now I have high beam control but I will also probably rarely ride with the headlight on. We'll see how it goes.
Rising Sun Bio
2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering,
no more Sanden OBA
1FZ-FE factory lockers +
Safari intercooled turbo, CDL switch, cup holder, Metric TLC leather, heated seats, JDM switches, PUMA OBA.
Warn M12000 waiting for a bumper.
Limited TRD 2UZ-FE SOLD