I bought a set of Coopers for my Toyota van, was not very happy with them, one had some type pulling problem, just never ran straight, dealer said it was called radial pull, he replace one or two of them but we much have not replace the right one as it continued to pull or push depended on which side it was placed.
I got tired of mess with them as I was going to trade the van in a few months.
finally I found the fix: had the front tires moved to the back, traded the vehicle off in about 10K miles, so it was going to be someone else's problem at the next tire rotation.
That was my only experience with Cooper tires.
I always run Michelins on old dodgy do right, big heavy truck with that diesel engine banging around up there, just drives right and pulls good with those heavy Michelin tires.
Over the years I have tried other brands, but so far, I have been more satisfied with the Michelins.
Just my humble opinion,