I have 75,000 with about 5,000 left on my factory Michelin 245 LTX M/S. Am considering Rickson 19. 5's. Would like to hear from readers with 50,000 or more on 19. 5's and their opinion of wearability. As you can see, I am not hard on tires, and am wondering if I can justify extra cost for the extra miles they might give me. Advise which tires you got also, please.