Tires SUMITOMO or Cooper

I put these on my 2024 Ford Maverick....Love them! Great look and feel, very grippy even on wet roads. Recently had a blowout due to me getting too close to a jersey wall (my fault no biggie).  Took a chunk out of the sidewall. The tire ran flat with only the remaining sidewall between the rim and the asphalt for a good 100' then gravel briefly.  The quality and thickness was evident in how quiet, controlled, and responsive the tire was till I was able to pull over; with no damage to the rim due to driving on it.

I went with Cooper Discoverer AT3 4S tires on my’n as stock replacement and very happy with my choice so far.

My primary concern was handling of snow and wet slush on the highway and so far this winter they’ve done excellent. The tread design does have a lot small sipes/cuts that work great for just that. Did not notice any increase in noise from them either.

Put them on a 2018 4Runner and they ride way better and quieter than the Toyo Open Country they replaced. They look great and they handle well in dry and wet but haven’t had the chance to test snow and ice yet myself.

Cooper's aren't THAT much more and they're great tires. I got 67,000 out of the ones on my 2003 Subaru Forester XS (RIP) they were at the end of their life though.

Went from stock Bridgestones to Cooper ATT. Seems to be quieter and defintely a better ride. Not sure why a lot of people prefer Bridgestones pero I find them stiffer even if inflated to just below recommended.

I switched to Cooper SST Pro and have consistently gotten 45K out of them, on my 3rd set.

Cooper ProControl is a pretty solid tire and you can't go wrong with them...

I threw a set of random non-EV Rated tires ( Cooper Adventurer All Seasons) on my car. From the new to old tires I got 0 change (though this might have been because my tires had a bubble and was causing issues) - My mileage ranges from 3.5-4.0mi/kW.

I know this thread is almost a year old...But it was one of the first things to pop up in Google.   I bought a Challenger with the Sumitomo all seasons. 245/45r20. They were terrible tires. I figured I try to get 2 years out of them and it didnt happen. They were manufactured in March 2023.  Lasted 12,000 miles before one of them separated from the side wall in November 2024. I got a set of new tires at discount tire and they showed me that 2 of the other tires were starting exactly the same thing. Separating the tread from the side walls. All on the inside so I couldnt see it.  The car shook over 75mph...They wouldnt hold air pressure...They were downright dangerous in winter conditions. They were very noisy and wouldnt grip even on a hot road surface.

I bought coopers about 3 years ago for my Silverado 1500. I will be honest this isn't an apples to apples comparison, I bought 4 ply (first mistake) AT3 4s's. They are cracking between the tread blocks on all 4 tires. Cooper won't warranty them saying it's just cosmetic, but they are deep cracks that go all the way around the tires between tread blocks on the inside and outside. I don't use chemicals or tire shine, and they are always kept at the appropriate pressures. They also lose chunks of tread every time i take them on the gravel roads in the mountains. I'm not happy with them at all, so my recommendation is to go with the K03's.