Hi guys. My friend just purchased a Rubicon like mine. However he is computerless, poor sap lol. He asked me to post this for him so here goes. He wants to put 27 inch blackwaters on his stock rims . Will these fit without rubbing and are they true 27 inch tires. Are these tires anygood in the mud. He will be mostly trail riding and wants a fairly smooth ride. I don't have any experience with these tires and your knowledge would be appreciated. Should I go with these or do you recommend another route or tire? Thanks alot in advance.