bansh-eman

Ok so I got my 35x12.50R18 Toyo M/T today, but they are too large and rub without my lift installed. So my question is, once I get them installed, what pressure should I run them at? I won't be hauling. Just highway/city driving and very light occasional offroading.

chadder1313

I run the exact same tire and i keep them around 50 psi. I just run them with a leveling kit but do rub at full lock but not bad at all.

bansh-eman

What backspacing is your wheels?

chadder1313

Im really not sure. They're Eagle Alloy 18x9's i believe. I do know the tires stick out past the fender about a 1.5 inch's.

.boB

This question comes up a lot. Fortunatly, the answer is simple. Unfortunatly, finding the answer may take a little work.

You need enough pressure to create a flat contact patch. You can either use the chalk method, or an infrared thermometer.

https://www.dieseltruckresource.com/...=tire+pressure

BPoulsen

I keep mine at 50psi.

bansh-eman

I notice your running the same lift hieght and tires do u have any rubbing? What's your back spacing.

painter68

hey banshe-man, I've got an 07 mega-cab with a 4" fabtech lift on it and have ran those exact same tires since the day i bought the truck new. I now have 57,000 miles on them. I was going to replace them last winter at 52,000 but we had a mild winter here so i'm going to stretch them out through through the summer. I ran 55 psi in the front and 60 in the rear. The wear is even across the tire. Beware, i have had the truck into les schwab and two time in a row they dropped the pressure down to 35 psi. Both times this happened the truck had under 10,000 miles and i had it in there because the tires were wearing on the very outer edge of the tread. It looked like the tread had a defect because it looked chewed up. I thought the alignment was off so that's why i had it in there to get checked. They said it was good so i took it to another alignment shop on my dime to check. It was good, so that is when i started playing with the pressure. If you check, i think the stock tires call for more pressure (load range e) so i went close to what the max pressure on the toyos are. Sorry for the lengthy message, and good luck!

bansh-eman

Thanks. I run 60-65 in front stockers, and 50 in the rear stockers. I figured it would be near the same but wsnt for sure.

I got to get this lift installed so I can fit these suckers on there!!!

painter68

no problem! After u get the lift on and drive it for 2-3 thousand miles re-torque all the nuts to spec and then spend about 70 dollars and have it aligned at a shop that has a big enough machine, and have them give u a printout of the specs for you're records! Take care!

no_6_oh_no

I run 70 in the front and 55-60 in the rear whne unloaded. If I rotate frequently that worked quite well. Mine wallows like a pig if the front pressures are much under 70 psi.

Depending on your back spacing on the wheels they may still rub even with a lift. If you don't stay with the OE back spacing its a pain. Lot harder on ball joints also.

bansh-eman

Yea I already got the lifetime alignment from firestone. And they also give you print outs of changes
I got an axle forward lift and my bs is 5.71 so o should be ok