Tire Pressure recommendation (2 Viewers)

[ATXLX570]

Hi @gaijin , thank you for your expert advice on tire pressure. I recently upgraded from a 2013 LX to a 2018 LX570 and I want to check the recommend pressure for the Yokahoma Geolander 275/50R21. Also, I have a set of Nokian R3s on different wheels (285/60R18) that I ran at 33psi on the 2013. Would there be any change in psi on the Nokians for the 2018? Thanks again!

 

[gaijin]

Hi @gaijin , thank you for your expert advice on tire pressure. I recently upgraded from a 2013 LX to a 2018 LX570 and I want to check the recommend pressure for the Yokahoma Geolander 275/50R21. Also, I have a set of Nokian R3s on different wheels (285/60R18) that I ran at 33psi on the 2013. Would there be any change in psi on the Nokians for the 2018? Thanks again!

Yokohama make 8 different "Geolandar" tires, so I had to do a little digging and found the GEOLANDAR® H/T G056 in size 275/50R21 XL 113V. If this is indeed the tire you are asking about, then:

The RCTIP (Recommended Cold Tire Inflation Pressure) for those ISO-Metric 275/50R21 XL 113V tires on your 2018 LX570 is 33psi F/R. This is based on the 275/50R21 XL 113V OEM tire offering from Toyota being spec'd @ 33psi for the 2017 LX570.

Nokian show the HAKKAPELIITTA R3 as out of production, but I did find some indy dealers selling Nokian Hakkapeliitta R3 SUV tires in an ISO-Metric size 285/60R18 SL 116R. If those are your tires, and you were happy running them on your 2013 LX570 @33psi (which is the RCTIP for a LC200) then you should also be happy running them @33psi on your 2018 LX570.

HTH

 

[AnyMal]

Hard unwatch overdue

 

[ATXLX570]

Yokohama make 8 different "Geolandar" tires, so I had to do a little digging and found the GEOLANDAR® H/T G056 in size 275/50R21 XL 113V. If this is indeed the tire you are asking about, then:

The RCTIP (Recommended Cold Tire Inflation Pressure) for those ISO-Metric 275/50R21 XL 113V tires on your 2018 LX570 is 33psi F/R. This is based on the 275/50R21 XL 113V OEM tire offering from Toyota being spec'd @ 33psi for the 2017 LX570.

Nokian show the HAKKAPELIITTA R3 as out of production, but I did find some indy dealers selling Nokian Hakkapeliitta R3 SUV tires in an ISO-Metric size 285/60R18 SL 116R. If those are your tires, and you were happy running them on your 2013 LX570 @33psi (which is the RCTIP for a LC200) then you should also be happy running them @33psi on your 2018 LX570.

HTH

Perfect, thank you!

 

[lx200inAR]

Probably shouldn’t ask that question if your lx had originally been fitted with 20” wheels. This thread might implode.

 

[gaijin]

Probably shouldn’t ask that question if your lx had originally been fitted with 20” wheels. This thread might implode.

Why would you say that... unless you're sitting there just waiting to light the fuse???

In any event, what constructive conclusion is one supposed to draw from your unhelpful comment?

 

[chris777]

I recently installed 275/70R18 Continental Terrain Contact A/T tires on my 2018 Land Cruiser (that i carrying a little weight)has Slee Sliders, Dual Batteries, Gobi Stealth Roof Rack, with two 3 gallon fuel cans). What is the recommended tire pressure for these tires, please?

 

[gaijin]

I recently installed 275/70R18 Continental Terrain Contact A/T tires on my 2018 Land Cruiser (that i carrying a little weight)has Slee Sliders, Dual Batteries, Gobi Stealth Roof Rack, with two 3 gallon fuel cans). What is the recommended tire pressure for these tires, please?

Continental Tire do not list a TerrainContact A/T tire in the ISO-Metric 275/70R18 size you stated. I did, however, find an LT-Metric LT275/70 R 18 125 Load Range E tire.

If tthat is indeed your tire, then:

The RCTIP (Recommended Cold Tire Inflation Pressure) for LT275/70R18 tires on your LC200 is 41psi F/R. This RCTIP is good up to the GVWR of the vehicle.

HTH

 

[TeCKis300]

I recently installed 275/70R18 Continental Terrain Contact A/T tires on my 2018 Land Cruiser (that i carrying a little weight)has Slee Sliders, Dual Batteries, Gobi Stealth Roof Rack, with two 3 gallon fuel cans). What is the recommended tire pressure for these tires, please?

There's plenty of margin to go down to 36 PSI. You may like a firmer ride or want more load support with more payload and use something closer to the higher recommendation. But don't feel like there's a final answer in this and suffer an unnecessarily firm ride as many have been mislead to do.

 

[Alpine4X4]

Forgive me if there's another thread somewhere, but can only find this subject in the 200-series section.

Recommended pressure for 1997 Land Cruiser with Good Year Duratrac's in LT285/75-16

Thanks!

 

[chris777]

Continental Tire do not list a TerrainContact A/T tire in the ISO-Metric 275/70R18 size you stated. I did, however, find an LT-Metric LT275/70 R 18 125 Load Range E tire.

If tthat is indeed your tire, then:

The RCTIP (Recommended Cold Tire Inflation Pressure) for LT275/70R18 tires on your LC200 is 41psi F/R. This RCTIP is good up to the GVWR of the vehicle.

HTH

Yes, I left off the LT. Thank you very much!

 

[lx200inAR]

Forgive me if there's another thread somewhere, but can only find this subject in the 200-series section.

Recommended pressure for 1997 Land Cruiser with Good Year Duratrac's in LT285/75-16

Thanks!

Tire Pressure Calculator

Easy to use tire pressure calculator. Use our tire pressure calculator to calculate the new tire pressure needed when changing tire sizes.

tiresize.com

you need info from the vehicle to calculate, but this link has everything you need once you provide that.

 

[ikoinu]

So for my 2009 LX 570, I installed 285/70r17 116Q SL Nitto Ridge Grapplers.

Gaijin, I've seen you recommend 26psi for this type of setup, based off the original factory 33psi recommendations for the 20" Rim & tire package. The online calculator agrees with you.

I'm no tire expert so I have to ask, this doesn't generate too much heat for hot weather highway driving under normal loads does it?

It's a lower pressure than I've ever run on anything not aired down for traction, why I ask.

 

[TeCKis300]

So for my 2009 LX 570, I installed 285/70r17 116Q SL Nitto Ridge Grapplers.

Gaijin, I've seen you recommend 26psi for this type of setup, based off the original factory 33psi recommendations for the 20" Rim & tire package. The online calculator agrees with you.

I'm no tire expert so I have to ask, this doesn't generate too much heat for hot weather highway driving under normal loads does it?

It's a lower pressure than I've ever run on anything not aired down for traction, why I ask.

Tire pressure is not just about load. To your question, no it won't overheat the sidewall. But it will handle like a wet noodle. Think Firestone, this is not a safe pressure to run on. Which is why RCTIP as it's been portrayed on the boards is bunk. Because the original tire pressure recommendation was never just about load either.

Try 33 PSI to start. You can try lower. Or may even want to try higher if stability is lacking at that pressure.

 

[gaijin]

So for my 2009 LX 570, I installed 285/70r17 116Q SL Nitto Ridge Grapplers.

Gaijin, I've seen you recommend 26psi for this type of setup, based off the original factory 33psi recommendations for the 20" Rim & tire package. The online calculator agrees with you.

I'm no tire expert so I have to ask, this doesn't generate too much heat for hot weather highway driving under normal loads does it?

It's a lower pressure than I've ever run on anything not aired down for traction, why I ask.

Well... a lot to unpack there.

First, let's start with the proper RCTIP (Recommended Cold Tire Inflation Pressure):

The RCTIP for those ISO-Metric 285/70R17 116Q SL tires on your 2009 LX570 is 30psi F/R which is a tire Load Limit of 2,392 lbs

I would never recommend 26psi for this tire on your vehicle. Can you post a link to where you saw this?

I checked 2 online Tire Pressure Calculators, and both of them had no provision for an ISO-Metric 285/70R17 116 SL tire. Can you post a link to a tire pressure calculator you checked?

The OEM tire setup for your 2009 LX570 is a P-Metric P285/50R20 111V tire @33psi which is a tire Load Limit of 2,315 lbs

So... if you run those 285/70R17 116Q SL tires at the RCTIP of 30psi, you will be at an even higher Load Limit than your P285/50R20 111V OEM setup @33psi and should be good at legal highway speeds.

As with ANY RCTIP, including the pressure recommended by Toyota for your stock setup, if you find yourself in a driving situation that you feel is beyond the design criteria that may have been used by Toyota, then you are certainly free to call on your personal experience and exercise your own common sense and run a slightly higher tire pressure for exceptionally high ambient temperature, sustained high speed driving - that's your call. Probably not needed for safety reasons, but if increasing RCTIP under those conditions reduces tire temperatures, then it may extend overall tire life - maybe.

Looking forward to hearing back from you where you saw me recommend 26psi for an ISO-Metric 285/70R17 116 SL tire, and where you found an online tire pressure calculator that recommended 26psi for that setup.

HTH

 

[ikoinu]

Looking forward to hearing back from you where you saw me recommend 26psi for an ISO-Metric 285/70R17 116 SL tire, and where you found an online tire pressure calculator that recommended 26psi for that setup.

HTH

Reviewing the thread again, it looks like the post was not specifically for that ISO-Metric tire as I had assumed, my mistake.
In the other post regarding the Ridge Grappler tire, you recommend 38psi for a LC200. Is this different than an SL because it's 'reinforced'?

Thank you for the correction on the psi recommendation, as stated I am no expert on tires.

 

[gaijin]

In the other post regarding the Ridge Grappler tire, you recommend 38psi for a LC200. Is this different than an SL because it's 'reinforced'?

No. The major reason for the difference is pressures are different for LC200 and LX570. Also, RCTIP usually differs for SL and XL (i.e., reinforced) tires with the same Load Index (116 in this case). Nitto no longer offers an XL 285/70R17 tire.

For example, let's look at the following hypothetical tire sizes and their RCTIP for both LC200 and LX570:

P285/70R17 117 on LC200 = 27psi
P285/70R17 117 on LX570 = 26psi

LT285/70R17 (Any Load Range) on LC200 = 40psi
LT285/70R17 (Any Load Range) on LX570 = 35psi

285/70R17 116 SL on LC200 = 33psi
285/70R17 116 SL on LX570 = 30psi

285/70R17 116 XL on LC200 = 38psi
285/70R17 116 XL on LX570 = 34psi

Clear as mud, right?

By the way, did you ever find that online tire pressure calculator that recommended 26psi?

HTH

 

[ikoinu]

Yes. It did not have the iso size available, so ran as a P tire, why I received the 26psi.

Don't mind me asking, is this your work or your hobby?

 

[Five70]

@gaijin could you please work your magic for me?
2011 LX570. I have 2020 18” Tundra Trd pro (BBS) wheels. Tires are Falken wildpeak at3w 285/65/18 116S tires (2023 tundra takeoffs). What is the rctip? Thank you very much!!

 

[gaijin]

@gaijin could you please work your magic for me?
2011 LX570. I have 2020 18” Tundra Trd pro (BBS) wheels. Tires are Falken wildpeak at3w 285/65/18 116S tires (2023 tundra takeoffs). What is the rctip? Thank you very much!!

Sure!

Falken does not list that tire model in that size on their web site (See Falken's tire size listing here: Falken Web Site), but Tire Rack does show a 285/65R18 SL 116T WILDPEAK A/T3W (See it here: WILDPEAK A/T3W on TireRack)

Since the RCTIP would be the same for a T Speed Rating and your S Speed Rating, and assuming your tire is SL and NOT XL:

The RCTIP for ISO-Metric 285/65R18 SL 116S tires on your LX570 is 30psi F/R.

If you take another look at your tire and find it is an XL tire, then the RCTIP would be 34psi F/R.

HTH