Confused on how more shoulder would give us roll speed, can you elaborate on that? I'm really thinking backwards on this I guess. I would think the shoulder would give more bite on a low bite track.On a red plate rookie you can get away with used tires that have the edges knocked off (normally.)
We've cut the shoulders on Maxxis for lighter/slower classes on low/no bite tracks. For higher bite surfaces and bigger tracks, you will want the full shoulder for roll speed. Band-aid would be to get up on air and add more bite to the tires until you can get some new ones.
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Of course Brian's answer will probably be better. But, lower bite tracks tend to use a rounder tire. So that it rolls onto the carcass of the tire and doesn't break traction. It gives it a softer sidewall, flexes the entire carcass of the tire more so that it can conform and when it rolls onto the carcass into the corner it doesn't break traction. Effectively increasing contact patch on the surface.Confused on how more shoulder would give us roll speed, can you elaborate on that? I'm really thinking backwards on this I guess. I would think the shoulder would give more bite on a low bite track.
If we're talking solely about roll speed - consider the spring rate of the tires. The more that has been cut/worn/removed from the shoulders, the lower the spring rate in the sidewalls. You can counter that with higher air psi, but then you lose sidebite, so you go to chemicals to get the sidebite back. Also, the more a tire has been run, the more the sidewalls flex and breakdown (lowering the spring rate.) The old Maxxis ELs were a prime example of that, but all tire sidewalls break down over time.Confused on how more shoulder would give us roll speed, can you elaborate on that? I'm really thinking backwards on this I guess. I would think the shoulder would give more bite on a low bite track.
Depending on how comfortable your driver is handling it, you can run tires that are wore slam out. Run them until they won't run anymore. at ~245 lbs you can run the LF forever.Honestly, if the track is any decent the more wore out the tire is, the better it is for Red Plate (usually). Most Red Plates run old wore out tires from adults that are good and light, and re roll them and they rip!