you could start from below since you mentioned 'dirt road':
2013 Auto Review Sports SUV Summer Test | the online tyre guide
2013 Auto Bild SUV 4X4 Tyre Test | the online tyre guide
else for wet grip:
Goodyear Eagle F1 Asymmetric 2 | the Goodyear Eagle F1 Asymmetric 2 reviewed and rated | the online tyre guide
also $300 for each (plenty of options) or a set??
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