I had my current set of MTR's siped by discount tire. about $10 a tire. much better traction in the wet and on ice.
I siped the previous set myself. Very easy and very effective. I took a razor knife and broke the blade so that I could safely cut the tread and not go to deep. Took about 15 minutes per tire. Just jacked up the front, marked my starting point with a piece of masking tape. did one tire at a time, then swaped the tires front to back and repeated.
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2005 CRD "
Ol' Blue"
Red Ryder carbine-action, two hundred shot range model air rifle with a compass in the stock and this thing which tells time.
My build page- RL Komodo Rear and TJM Front Bumper, armored, lifted, JBA Steel D30, 4.10s and ARB air lockers.