Bad Maxxis Tires

My Dad has the Maxxis tires on his 2020 Northstar and has no problems. I've had Maxxis Ceros on my 2015 Ranger 570 Full Size for 2+ years and love them, no issues like those you describe.

It may be that you got some defective tires.

Another possibility has to do with where you store your Ranger. Some electrical equipment produces Ozone when operating. Ozone is known to damage rubber in tires. If you park close to equipment that gives off Ozone that may be part of the problem.
Understanding the link between ozone and rubber deterioration

Storage in direct sunlight also causes damage to tires.

Running tires at less than the recommended pressure can also cause damage you describe. Low tire pressure increases heat buildup in tires due to the friction of flexing. Heat damages tire rubber and causes cracking. Tire pressure should be checked at a minimum of every 30 days. You can't just look at modern tires and judge that they are properly inflated. Modern tires can be underinflated considerably and not appear to be.

Hello my 2021 ranger has the same exact issue with my maxxis 29” factory tires. Was dead flat last night totally unexpected and when I removed it noticed dry cracking all around the inside of tire. I also am going to call my dealership. WTF

DVR4 said:

my XP1000 maxxis tires require air in 1 or more tires every use. Cracks by lugs as mentioned.
They suck.
Between 6+ months (and 6+ month of lost warranty) to get a replacement throttle pedal and these tires.
This may be my last polaris product.

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While I fully understand your frustration I hardly think it's fair to blame Polaris for the tire issues. More than one manufacturer of cars and trucks has had problems with contract tires that were installed on their vehicles when they were sold from the dealership; for example, we have a 2021 Toyota Highlander Hybrid that came with Bridgestone Alenza tires that lasted 21k miles before being worn out. We drive conservatively and bought a hybrid in order to improve fuel efficiency over the 20 year old 2000 Nissan Xterra we owned that was still in good overall shape. I certainly don't blame Toyota for the tire wear. Back in 2001 Ford had big issues with Firestone tires on new vehicles failing. Back in 1978 Gm had problems with Firestone Steel Belted Radials failing on their new vehicles. Obviously this type of problem isn't limited to Polaris.

I agree that losing 6 months of warranty because Polaris couldn't supply a replacement throttle pedal under warranty and I certainly would be writing to Polaris, providing documentation of the problems asking for an extension of my warranty by 6 months.

However, the fact is that all manufacturers have been plagued by supply chain problems, some due to COVID and some to other reasons. Problems with a lack of chips for electronic components, which is likely what held up your throttle pedal, are well documented and have affected almost all manufacturers. Additionally, we now live in a society where many people just don't want to work while our government provides them with continual "stimulus" checks and they are happy to live at the level that those checks provide them. I submit that almost all manufacturers, Polaris, GM, Ford, Can Am, Honda, home builders, and all other businesses have had some supply chain issues and have been unable to repair or replace or supply the needs of customers.

Bottom line, it's no skin off my nose if you blame Polaris or never buy another vehicle from them, just be aware that this type of thing could happen with any item you purchase. You might find the following link to a related search informative:
vehicle manufacturers unable to make warranty reparis due to supply chain issues - Bing