Admittedly, not a scraper and working on a very different surface, but the mine where I work will not use anything but Bridgestone tyres on our Cat ad55 trucks. We trialled Michelin, but they were terrible with most suffering blowouts at as little as 300 hours. The Bridgestones stay on the truck until they wear out and I cannot remember the last blowout we've had. These trucks were running on underground haul roads that were maintained constantly by graders. Tyre pressures were maintained and monitored by the fitters to manufacturers specs.