Two thoughts:
1) If that carbide tip in the picture is an actual Leki tip or other genuine carbide tip instead of a steel look-alike, that poles has some serious wear on it. I'd have replaced that tip long ago with a new sharp carbide tip cuz that one doesn't look like it would bite into much of anything other than dirt or skree.
2) Leki has a great reputation for customer service and their poles are guaranteed for life. I'd hit them up for replacement tips if the tips are broken and not just worn out.
3) Because I really get tired to the clicking pole tips against rock for extended periods of time, and I've been doing more more low-angle stuff with lots of rocks (as apposed to high angle stuff with rocks moving slowly enough that the clicking doesn't drove me crazy, or as apposed to low angle stuff with dirt/gravel, etc, typical of the Pacific NW) . . . anyway, I've been experimenting quite a lot lately with rubber tips on one pole and carbide on the other. To my surprise, the rubber works as well or better than the carbide on dry rock, dirt, gravel, etc. Rubber works better in leafy soil as it doesn't collect leaves as much . . . but, leaves on rocks are crazy dangerous with rubber tips, as are wet rocks. In mud, I prefer either the carbide tips or the Black Diamond Rubber Tech tips because they don't get stuck in the mud as much.
In summary, for me anyway:
When wet, icy, or higher angle stuff with leaves - carbide (preferable nice sharp carbide) all the way!
When dry - Rubber all the way, even on high angle stuff, and I've been really appreciating the Black Diamond rubber Tech Tips lately as they are small, durable(ish), quiet and hold surprisingly well (although, I would suggest all the rubber tips hold surprisingly well in dry conditions without leaves). Finally, since the BD Tech Tips are less than $10, it's really easy to keep a spare pair of both
rubber and new
sharp carbide around to switch out whenever you need to.
As for replacement Leki tips:
Carbide
Rubber
It looks like Leki is a bit prouder of their tips than BD - $13.50 and $20 vs. < $10.
I would love for someone to measure the tapers on the ends of the Black Diamond Poles and the Leki poles and see if the tips might be interchangeable. I know that Komperdell poles do not have the same taper as Black Diamond as I compared them last night.