Might want to change that to read "BFG MT's." Many people use the one AFCO racing sells for about $50 plus blades with good results. Hard to groove a tire with one in cold weather. There are other models with price ranges of about $350-$400 that are much faster, but will do the same job. Basically, how much is your time worth? You will probably have to do it in the summer in CO though. Hard to groove a tire when it is 30* outside and snowing. You can search and get much better info. I am sure there is a Discount Tire Co in Westminister that could sipe them for about $10. Lance posted a tech article about this a few months ago.
I don't see where everyone is worried about the cold. I grooved my SX's with the AFCO when my tires were about 45-50*. Just put them in your garage and put a heater next to them if you are that worried. It took me about 45 mins. a tire to draw the pattern and cut them out. I used the #5 blade and only had to change it once because I hit a hidden nail and broke a blade, otherwise I could've done them all with 1. Oh yeah, I don't have popeye forearms either.
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