BMW R1200R R1150R/T F800 K1200R R1100R/T R1250R RnineT Message Board

What are the main differences between the z4 and z6's? My bike came with z4s.

Tread pattern is the major difference.

Both were/are great tires.

My experience is that the MEZ4's have a slightly crisper feel, but last only 70% as long as the Z6's. By and large, I prefer the Z6's for the enhanced tread life.

I believe the Z4's are no longer manufactured, the Z6's are their replacement.....

There are actually many differences:
1. The compound
2. The tread design
3. The profile in cross section

In a practical sense, they feel different, the bike turns in differently and they behave differently in the wet.

Go with the Z6. I have run them both and think the 6 outperforms the 4 in all ways.

dano wrote:What are the main differences between the z4 and z6's? My bike came with z4s.

I'm finding much better performance and significantly longer life from the Z6. The Z6 perform well right up to the point where the wear bars show whereas the Z4 feel lousy well before that. I'm really impressed with the Z6. In fact, I just an hour ago finished putting my second set on my K12RS. My R11R has its second set too.