jimgerken
Veteran Member
And now another question: Are all R4 tire patterns the same? I can't believe that the mfrs haven't come up with a better pattern that what you started grooving. Do they not consider the differing ground conditions (mud, snow, pavement) when they design a tread? For our cars we have the option of selecting "All Weather" tires.
Mine are different than most. Here is a pic. I am thinking about grooving them, but their curvy look makes me wonder what the best grooving technique might be. Ideas?