delta4x4 went to work on the Wrangler Rubicon for the Cooper Tire & Rubber Company, one of the leading manufactures of off-road tires. The delta4x4 Jeep Wrangler Rubicon was then used by the US tire company to test its Discoverer STT Pro P.O.R tire range. delta4x4, the off-road tuning specialist, is always up for a […]
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