Replacing P series with LT on a 1500 Sierra
My 1500 series Sierra came with P265-65-R18 from the factory. The tires have been OK, but I've always found that when loaded (even with the WDH) the steering is a bit loose. In speaking with others ...
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LTs are a good choice and its possible that you can install them on your stock wheels depending on their PSI limitations.
However an alternative is to buy P rated tires that are made for trucks and SUVs. My truck was used when I bought it and has P rated SUV/truck tires that can take 51 PSI. I've been towing at 45 psi and there is a world of difference between that and the factory recommended 35 psi. I've been pretty happy with them, a lot more than I thought I was going to be. I thought I'd be contemplating the same thing as you are.
As far as the TPMS goes, mine doesn't have an alarm (that I've been able to find). So long as the system know which wheel is where I can put what ever amount of air I want. I just have to manually check the menus for current PSI.
However an alternative is to buy P rated tires that are made for trucks and SUVs. My truck was used when I bought it and has P rated SUV/truck tires that can take 51 PSI. I've been towing at 45 psi and there is a world of difference between that and the factory recommended 35 psi. I've been pretty happy with them, a lot more than I thought I was going to be. I thought I'd be contemplating the same thing as you are.
As far as the TPMS goes, mine doesn't have an alarm (that I've been able to find). So long as the system know which wheel is where I can put what ever amount of air I want. I just have to manually check the menus for current PSI.
