Why do some tires have such a low max inflation pressure of only 35 psi. My Pirelli Cinturato or Pirelli P3000 Cinturato, can't remember the exact name. These were ~$80/tire at Discount Tire for 185/65/R15 and they all have an 85k mile warranty. I don't consider these the "cheapy" brand. I would have expected Pirellis to have a minimum max of 44 psi. Essentially, I want to inflate my tires to at least 40 or even 44 psi.
Well, I'm not entirely sure, but I sent a quick question to the Pirelli tire people to try and figure out by what criteria their tires came to this rating, so we'll see if we can get a response.
My uneducated guess would be that it's due to the construction of the carcass of the tire. From what I understand, the inner layers and belts is the backbone and carries the stresses and provides the strength of the tire.
But it will be interesting to see if Perelli responds.
My guess is with TC, it's all about sidewall construction, reinforcement, etc.
My winter tires are 185/65R15 and have max sidewall 51psi...
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Why do some tires have low max sidewall psi of 35
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