Recommended Tire Pressure and any other alterations needed

I recently put Goodyear Wrangler DuraTrac LT285/75R18 35" Tires on my 2013 Crewmax. I do some highway driving to get to the mountains. What is the recommended Tire Pressure and are there alterations I should make to the computer or anywhere else?

 

Tire pressure for street driving? Around 45-47psi give or take a few psi to suit your needs. Because they are lt-metric, e rated 10ply, they will need more psi to support the same load that you were running with your p-metric series (assuming that is what came stock).

This chart will help you convert the p-metric to lt-metric psi:
https://www.toyotires.com/media/2125/application_of_load_inflation_tables_20170203.pdf

No computer alterations are needed, but you will have to calculate out your mpg differently based on the rotation size of your wheels (I can explain the calculation if you want).

If you drive on the trail you'll want to lower the psi, of course.

 

What is the maximum pressure for your tires? Mine is 80 (e-rated) and I run mine at 45.

 

Thanks guys! @chphilo , Mine is also 80.
@ruiner what does the Dual Vs. Single mean on that Load Inflation Table?

The stock tires were P255/70R18 and they recommended 30F and 33R. I usually ran them around 35. So according to that table I'm trying to hit a weight of about 2400-2469.

If I'm reading that chart right, the LT285/75R18 equivalent weight at 45 lbs would be:
Dual-2485
Single-2730

So 45 it is. But what does the Dual refer to?

And is there any speed concern? It looks like they are rated for a max speed of 99. Are there any concerns doing 75?

 

I, too, ran about 34-35lbs on my P tires so ~45 it was(is) on my LT275/70/18s.

Dual = dual tires next to each other aka dually truck (four tires on the rear axel instead of two).

No concern at 75mph or even 80mph at all.

 

Chalk test. I run my 285/75r18s at 30psi and they barely wear flat up front let alone in the rear, plus make the ride more plush.

 

I love when people scream “chalk test” when someone is asking about tire pressure. Recommended tire pressure is going to be based on weight carrying capacity of the tires and the max GVWR of the truck. If the pressure is correct then the tires are going to wear just fine.