Hi,
At tiverton nationals (where my photos are from) they always run a spec tyre, well, actually a choice of 2. Its usually ballistic mini pins and some type of american tyre, like proline step pins or losi studs (??). usually one type or the other works well, i think the ballistic pins work when its a blue groove scenario and the losi / prolines when its a bit looser.
are the holeshots the ones that come on the b4 kit ? i sure you can run whatever you want at most meetings, its just the nationals where we have spec tyres.
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