Falken wildpeak A/T4W tire pressure

[uraniumrich]

Unless I'm figuring something wrong, I feel like 2100 lbs is a high load estimate... the GVRW listed for my 1958 is 6725 lbs, when divided by 4 = 1682 lbs, which was my starting point for reading load tables. Obviously there may be some differences between front and rear load (though I assumed it wasn't too great if the stock tires have the same recommended pressure), but unless you're overloaded or towing, I doubt either axle is loaded at 2100 lbs/tire for normal driving conditions.

I keep my tires inflated to 40 psi, which according to the charts has a max load of 1920 lbs... which I assume is adequate.

I not not an expert of this, however, and welcome anyone exposing any flaws in my logic...

The load estimate is based on Toyota's choice of OEM tires and their load specifications. In other words, you can look at the load rating on the OEM tire and then look up the load for that rating. Here's the details from my post about running LT255/80R17 on my truck:

1. Current Load Index is 112. According to Falken, an Index of 112 at 33 psi is a load of 2469 lbs. Evidently metric tires include a 10% overage when used on an SUV. So, the equivalent load I need for my tires is 2469/1.1 = 2104 lbs.

2. Based on Falken's table, for the LT255/80R17 the load at 35 psi is 1945 lbs and the load at 40 psi is 2135 lbs. Interpolating between the two, I get a value of 2097 lbs at 39 psi. That's pretty doggone close to the 2104 lbs on the 265/60R20 tires that came with the truck.

Is your logic flawed? I'm not sure. I'm basing the numbers on Toyota's specifications.

 

[uraniumrich]

I'm looking to get this exact tire. How do you find the wet performance and potential snow performance of the at4ws? Some reviews about them have spooked me.

I've had zero issues either in snow or rain with the tires. Based on performance testing I've seen, Falken decided to sacrifice some snow performance to improve the dry/wet performance of the tire. So, the new AT4W performs better in dry/wet conditions than the AT3W and worse in snow. If I needed to prioritize snow performance for my tires, then I'd probably go with the KO3 over the AT3W. Unfortunately, the KO3 has more limited sizes for our trucks.

 

[PDPete]

The load estimate is based on Toyota's choice of OEM tires and their load specifications. In other words, you can look at the load rating on the OEM tire and then look up the load for that rating. Here's the details from my post about running LT255/80R17 on my truck:

1. Current Load Index is 112. According to Falken, an Index of 112 at 33 psi is a load of 2469 lbs. Evidently metric tires include a 10% overage when used on an SUV. So, the equivalent load I need for my tires is 2469/1.1 = 2104 lbs.

2. Based on Falken's table, for the LT255/80R17 the load at 35 psi is 1945 lbs and the load at 40 psi is 2135 lbs. Interpolating between the two, I get a value of 2097 lbs at 39 psi. That's pretty doggone close to the 2104 lbs on the 265/60R20 tires that came with the truck.

Is your logic flawed? I'm not sure. I'm basing the numbers on Toyota's specifications.

Yes, and I apologize, I should have mentioned that I did take the time to read your other post as to how you obtained that number...which is quite sound and reasonable...and for sure, if you figure for 2100 lbs, that will likely do just fine.

I guess my question was more or less, is Toyota erring well on the side of caution here? Sure, I can add an extra 5 psi to my tires, but I don't think i need it, and find the ride better at 40 psi as well...which I believe is still below the actual load limit for the tire of 1920 lbs @ 40psi (ko3).

 

[uraniumrich]

Yes, and I apologize, I should have mentioned that I did take the time to read your other post as to how you obtained that number...which is quite sound and reasonable...and for sure, if you figure for 2100 lbs, that will likely do just fine.

I guess my question was more or less, is Toyota erring well on the side of caution here? Sure, I can add an extra 5 psi to my tires, but I don't think i need it, and find the ride better at 40 psi as well...which I believe is still below the actual load limit for the tire of 1920 lbs @ 40psi (ko3).

No need to apologize - I thought your post posed an excellent question. Properly inflated tires are important so that they wear properly. The chalk test is a great way to check for proper inflation based on your actual load. A quick google search will pull up tons of videos on how to chalk your tires.

 

[Don]

I live in the PNW, they do very well in the rain. I took some hard turns to try and get them to slip and it was difficult. Snow hasn't been tested thoroughly enough to have an informed opinion.

Pizza cutters are a good choice, and may hydroplane less than a wide tire. My 285s are good in both wet and snow. But most people don't realize that wide tires are often inferior in snow.

The trouble with youtube winter tire testing is that the results can vary a lot by temperature and the characteristics of the snow on the road. Youtube tire tester are going to review the conditions that happen to occur on the day or two they test. I'm sure manufacturers have a big eye roll at some of the conclusions.