I am not a fan of the MT21. This is a tire I unfortunately know well. In several Baja rides I've come home with a nearly worn out MT21 rear after just 1400 miles. (700 dirt/700 paved road) And the fact is, the MT21 gives dangerously bad dirt performance, imo. Front end washes out, bike does not turn very well. Not so good for me, but I am used to 1st class motocross tires. (Bridgestone/Dunlop)
I accepted the trade off on bad dirt performance on the MT21 because I thought it would last. It does not. At least not the rear tire. Front is fine but crap performance!
If the T-63 only lasts 5000 kms. then I am in trouble! I need at least 5000 miles (not KMs)
I was hoping the T-63 would match the TKC80 but looks like maybe not?
The TKC is not so good performer in dirt either, but it's strong as Hell and lasts are long long time, even on paved roads.
We also get Heidineu (sp?) and Mefo here, but very expensive. I need something that will last and not go bald from riding 1000 miles of pavement. Maybe this tire does not exist?