JB.
New member
Well these are the kinds of things that have made this tire browsing the past few months confusing. ...P rated I thought was NOT for load carrying capacity, and the tread depth thing about E tires I thought was debunked.
The endless contradictions bugged me, too, when I was tire shopping which is why I decided to use only primary sources of information.
I didn't want to confuse your search by bringing up P-metric tires, but you can read this if you want to know why they carry more load. If there is a technical point you absolutely feel you must reach certainty on, you can ask this tire engineer. If you do, I suggest wording the inquiry carefully as a general question is likely to be met with a blanket caution against using LT tires on a vehicle that came stock with P type.
For road use, Ps are generally a better choice. Once going off-pavement gets thrown into the mix, only the end user is in position to decide which tire is most appropriate. LT tires typically have deeper tread than P, but it can vary within load ranges, sometimes consistent across the range and sometimes going the opposite direction of expectation within ranges. The differences in tread depths and the trends they follow can easily be seen by looking at tire specs on Tire Rack.