Tyres are the single most important factor in all motorsport because they are the only item that contacts the terra firma and instigates forward movement .
In 25 years of racing the "right tyre" used at the right time makes more difference than any chassis /setup alterations
look at F1 they have weather monitors forecasting weather changes just so they can be on the right tyre when needed
years ago when outdoor tracks were predominately grass green minispikes were the order of the day and I seem to remember they did last a bit longer than today because they were a harder compound than the yellows we use on astro now
regards dave
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