Titiritero
Retro Guru
All the in-house produced tires from Trek in the early nineties already had black walls (Matrix Cliffhanger, Matrix Z-Axis, etc.). Nothing outstanding, but they did the job.
Porcupines had great grip at the cost of ultra-fast wear. I bought one and one month later had to go back to the shop to get a new tire as the Onza was completely worn out.
Porcupines had great grip at the cost of ultra-fast wear. I bought one and one month later had to go back to the shop to get a new tire as the Onza was completely worn out.