Tire Pressure recommendation
- Thread starter terdrocket
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gaijin
GOLD Star
Sure!
The RCTIP for those LT275/65R18/E 123/120R tires on your LC200 is 45psi F/R.
HTH
Looked, but couldn't find. Cold psi and/or psi after driving several miles for 2020 with 275/70/18 KO2s. Thanks!
In order to provide RCTIP, you need to provide the full tire designation including which standard it's using (P-Metric, Iso-Metric, LT, or Floation (this one is more obvious)) and which vehicle you have (LX or LC). If you have all that info, you can check this chart. I think i've fixed all the typos. Or you can wait for @gaijin to do the leg work for you.
Perfect. Thanks!
Something I never noticed before now. I'm sure it's been mentioned before, but by load rating the stock LX wheel/tire shouldn't be fitted to a LC. Interesting.
Which set/year etc? My LX actually came with XL 113V Yokohamas on the 21s. I went back to a higher load rated P 117T SL which made up for the difference.
I was talking about the 20" LX wheels.
For the 21" LX wheels, as long as it has the stock XL 113 ISO metric tire, you can barely squeeze it onto a LC with a RCTIP of 42 PSI, which is the max PSI for that tire.
Is the RCTIP on the door frame 33 PSI for the 113 XL tire (a not very thorough google check pointed to that RCTIP)? If so, then the prescribed inflation is even softer than a 20" LX. If you used the RCTIP tables to calculate you RCTIP for putting a 20" LX wheel/tire on your truck (P285/50R20), your RCTIP would only be 28 PSI, instead of the 33 PSI on the TIP cards on LXs outfitted with 20" wheels.
More murkiness on the validity of RCTIP.
For the 21" LX wheels, as long as it has the stock XL 113 ISO metric tire, you can barely squeeze it onto a LC with a RCTIP of 42 PSI, which is the max PSI for that tire.
Is the RCTIP on the door frame 33 PSI for the 113 XL tire (a not very thorough google check pointed to that RCTIP)? If so, then the prescribed inflation is even softer than a 20" LX. If you used the RCTIP tables to calculate you RCTIP for putting a 20" LX wheel/tire on your truck (P285/50R20), your RCTIP would only be 28 PSI, instead of the 33 PSI on the TIP cards on LXs outfitted with 20" wheels.
More murkiness on the validity of RCTIP.
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First of all I like the way you think man, I am always questioning things as well.
Second, as i just bitched on another thread about a TSB being absolutely stupid, I not only distrust "OEM recommendations" but I try my best to validate them myself.
Third, yes i can confirm my tags are at 33 PSI front and rear. My LX 470 was 32/33 with SL tires on OEM 18s which should give you a hint at what im about to say next.
The LX is intentionally hobbled by low "RCTIP" sticker to make it seem softer than it is so they can sell it on 20s and 21s.
Not only is this misleading, but is the reason you need the XL load rating. They are under-filling them to mask the BS ride from the oversized wheels and the extra load support allows them to do that. The only reason they can get away with this is due to artificially low side wall flexion on the low profile 255/50/21s.
If you would kindly read my post HERE, you will see where I am coming from and why I am still searching for the optimal Wheel/Tire for my truck.
Your input and experience there is greatly appreciated!
I only have 10k miles under my belt in a 200 series, so I'm probably not the best for making recommendations. I run LT285/75R17s on RWs @35PSI, and I think it's great. I don't drive my truck like I stole it, but it's a noticeably different ride than my OEM 20s were. And infinitely better off road. I would say there is a little more roll, but nothing that feels dangerous or squirrely.
Interestingly enough, the tire you are running (P285/70R17 117) has a massive load rating at it's minimum suggested pressure (2480 LBS @26 PSI). Even if you put that tire on a Land Cruiser the RCTIP would be only 27 PSI. From the Toyo charts, only the freak P345/55R15 has a higher load rating at 26 PSI of all the P-Metric tires listed.
gaijin
GOLD Star
Why yes, yes I do!
The RCTIP for those LT285/70R17 tires on your LX570 is 35psi F/R.
HTH
gaijin
GOLD Star
I would be glad to help you with tire pressure recommendations for your LC200/LX570, but I need more info.
Also, since 16" tires do not work on a 200 series, what vehicle are you asking about?
Finally, are you sure your KO2's are not LT285/65R18?
HTH
Sorry for incomplete details sir. For 200 series they’re LT285/65/18 KO2s.
LT255/85/16 cooper st maxx for Hilux
gaijin
GOLD Star
Sorry, but just to be clear, do you have a LC200 or an LX570?
I cannot help with the Hilux, but everything you need to do the calcs for yourself can be found in this excellent monograph on the subject published by Toyo Tires:
Guidelines for the Application of Load and Inflation Tables
HTH
Lc200. thankyou
gaijin
GOLD Star
Great!
The RCTIP (Recommended Cold Tire Inflation Pressure) for those LT285/65R18 tires on your LC200 is 42psi F/R.
HTH
gaijin
GOLD Star
