I'm new to this forum. I've been running Dunlop K700 radial on the front of my 99 C10 which has cupped and now needs to be replaced. I've also got a D205 on the rear, which will also need to be replaced soon. I've ordered the ME 880 front tire, which is a radial. Not cheap but I wanted to try something that might get me better mileage. Anyway, I don't think the rear tire is offered as a radial, only bias. Can you or should you mix the two? Or am I better off with something else? Thanks, Rick