All seasons cracked but winter tires not. Am I trying to get blood out of a turnip?

Joined
May 24, 2019
Messages
214
Location
Ontario Canada
So, the uniroyal tiger paw all season touring tires that I put on the LeSabre in the fall of 2017 are now showing cracking between the tread lugs. The Cooper discoverer winter tires on the Honda have just finished their fifth winter and have no cracking whatsoever (not that I can see from the exterior of the tire anyway). These Uniroyals have an incredible amount of tread depth still available and they’ve been a good tire but is this the norm now with modern tire rubber compounds that they crack before the tread gives out? I think they were rated for something like 70,000 miles or so and I have about 40,000 on them.

Although I am thinking of moving both vehicles this coming fall to all weather category tires, I’m wondering if I should bother running the Cooper winters for a sixth season. Still lots of tread left and no cracking. If I don’t, I’m thinking that my fall time move to all weather tires for each vehicle could be useful or else I’m looking at purchasing four sets of tires in the next 12 months. (that is, an all season and winter set for each vehicle) 😳
 

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Joined
Oct 28, 2017
Messages
3,375
Location
Americus, GA
Okay, they are at least five years old. The date code on The sidewall will give us an exact age. Uniroyal is a third tier tire made by Michelin. Michelin are noted for some cracking, depending on the tread wear ratings.
 
Joined
Aug 23, 2020
Messages
541
Location
Canada
I think winter tires are softer rubber then summer tires and will crack less with age if stored properly. Less UV rays hitting the winter tires due to less sunshine and less heat to dry them out in winter. Most wear on winter tries happens in spring and fall when driving on dry cement roads.

I would keep driving on those cracked tires but keep and eye on them. I've seen far worse on the road.
 
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