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Seeking advice/experience or recommendation of grooving and or siping of American Racer BT 92" and 88" , 44 and 48 Compound. Slight moisture to dusty dry track.
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A racer 44 is slightly softer than a Hoosier 21, and a Racer 48 is about the same as a Hooiser 21. I am familiar with Hooiser compounds, so I will talk to you about them. When I run a Saturday night race on a track that starts muddy and has a black streak by feature time, then I do not groove Hoosier 21's for this condition. I will do some grooving on a used 21 when I am trying to save some money by using older tires for a Saturday night race that pays $300 to win and $50 for second place. I would not groove or sipe a Hoosier 21 or a Racer 44 or 48 when they are still new and fresh. If you run tracks that get dry and kinda black by feature time, and you are destroying a new racer 48 on the rr in 20 laps, then I would stronly consider running a grooved racer 53 or 56 if allowed by rules, or I would start using an older racer 48 tire that had several heat cycles on it for the rr for the feature. Tires harden every time that you get them warm, and tires that have had 2 races on them often work great on the rr. If you choose to run old tires, look at the tread blocks, and turn the unused side of the tread blocks to the top of the track. This puts the sharpest edge to the right side of the car, and this helps with side bite.Comment
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