My '99 LTD has 2 sets of different tires on front and rear. The rear tires are Kelly Safari Signature P265 70R 16, and the fronts are Dunlop TG35 Grand Trek P265 70R 16. Both sets are almost new, and may have been purchased and mounted at the same time. I have no issues with either set. I do not need an aggressive tread pattern based on my driving habits. Since they are different tread patterns, recommended tire rotation is out the window. I guess my question is which brand is "better"? My spare is a tire in that it is mounted, and round and bald. Most likely I'll buy 3 of ? to match everything correctly. Opinions?