The recommendation is more related to replacing what came standard on the bikes both in speed rating and in load capability. Same with their car recommendations. The S came with the Metzler Laser (before that was replaced with the Lasertec). I believe the other K75s came with the Metronic (a lower performance, higher milage tire).
The recommendations do not list every upgrade possible, just the minimum replacement. Going with higher performance tires is at the choice of the owner.
Yeah I've burned up ALOT of Lasertecs until I finally got curious about the good things that I'd heard about the BT45s on this forum. I'm on my third set of BT45s and am very pleased. A noticeable improvement.
Lee, that perfectly answered the question. I didn't understand the minimum standard tire replacement for the fitment listing. Bridestone could not have answered it better (if they weren't too busy to read and reply to my email queries ).
I'll probably replace my BT45 rear tire with the same, and change my S11 front tire to the BT as well.
Thanks much,
88 K75 Tired, but loyal.
pete