You could just put the 3 words without the => between them into some search thing and get many hits. It's significant. Maybe less so if country roads with low

You could just put the 3 words without the => between them into some search thing and get many hits. It's significant. Maybe less so if country roads with low traffic as poster downwards suggested. But tyres are soft, so it seems only logically they are abraded faster by gravel which is harder and has sharper edges, than a more flat surface.