Newton Abbot-based heating oil and fuel specialist Heltor has returned to a full Michelin tyre policy across its fleet of more than 50 commercial vehicles. Michelin states that the move comes less than two years after switching to a competing premium tyre brand. Following the move, Heltor closely monitored the performance of the new tyres against existing Michelin fitments within the fleet and was able to track the precise tyre cost per kilometre between the two brands.