Tire Pressure recommendation (3 Viewers)
- Thread starter terdrocket
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I’m sorry if I missed it, but could I please have a recommendation for tire pressure for 285/70/17 Falken Wildpeak AT/W4 on a C load range. Shop put them at 42. Thank you. LX570 2013
Should have said it was 116/113R
The only thing in this case that matters is that’s it’s an LT285/70R17. 35 PSI is the book recommendation.
Post in thread 'Tire Pressure recommendation'
Tire Pressure recommendation - https://forum.ih8mud.com/threads/tire-pressure-recommendation.997546/post-13899601
I searched for a pressure recommendation for BFG Trail Terrain 285/60/R18 on an '18 LC and couldn't find one having been posted.
The shop set them at 40 front and 38 rear, which doesn't seem right.
Could you please tell me what the recommended cold tire inflation pressure is?
The shop set them at 40 front and 38 rear, which doesn't seem right.
Could you please tell me what the recommended cold tire inflation pressure is?
Pretty sure that’s the OEM specified size for an LC, so you can just use your RCTIP placard in the door jam. Not sure if OEM is the P metric or ISO metric in that size.
If I’m wrong, the trail terrain appears to be an ISO metric tire rated at 116. From the table below, that’s 33 PSI for an LC
Post in thread 'Tire Pressure recommendation'
Tire Pressure recommendation - https://forum.ih8mud.com/threads/tire-pressure-recommendation.997546/post-13899623
I've been running Trail Terrain 285/60 for a few years now, in fact I'm on my second set. 33psi indicated on the TPMS, 34 on my extremely accurate tire gauge worked wonderful thus far, even wear @ 28K mi. 40/38 cold tire pressure is too much.
@gaijin what ya thinking for this tire?
tiresize.com
My Math is saying 40-42 RCTIP
Yay or nay?
Thank you sir
Cooper Discoverer AT3 XLT 275/70R18
My Math is saying 40-42 RCTIP
Yay or nay?
Thank you sir
gaijin
GOLD Star
@gaijin what ya thinking for this tire?
Cooper Discoverer AT3 XLT 275/70R18
My Math is saying 40-42 RCTIP
Yay or nay?
Thank you sir
The RCTIP (Recommended Cold* Tire Pressure) for that LT275/70R18 125/122S E RWL tire on your LC200 is 41psi F/R
HTH
*According to Toyota:
Tire Pressure vs. Tire Temperature
Tire temperature is dependent on “cold” tire pressure, driving distance and speed, ambient temperature and road surface temperature. As the temperature of the tire changes, air in the tire expands and contracts, changing the tire’s air pressure. The cold tire pressure for all Toyota models will vary and will need to be adjusted accordingly.
“Cold” tire pressure, as shown on the tire pressure label on our vehicles, is generally considered to be the pressure in a tire that has not been driven in the past 4 hours and has been parked outdoors.
Gracias
gaijin
GOLD Star
Sure!
The RCTIP (Recommended Cold* Tire Pressure) for that LT285/70R18 tire on your LC200 is 38psi F/R
HTH
*According to Toyota:
Tire Pressure vs. Tire Temperature
Tire temperature is dependent on “cold” tire pressure, driving distance and speed, ambient temperature and road surface temperature. As the temperature of the tire changes, air in the tire expands and contracts, changing the tire’s air pressure. The cold tire pressure for all Toyota models will vary and will need to be adjusted accordingly.
“Cold” tire pressure, as shown on the tire pressure label on our vehicles, is generally considered to be the pressure in a tire that has not been driven in the past 4 hours and has been parked outdoors.
gaijin
GOLD Star
The Toyo tables (actually an extract published by Toyo of the TRA (Tire and Rim Association) tables) have the info in the "Reinforced Load Inflation Table" on page 37. Follow the 116 Load Index over until you get to the first inflation pressure >2512 lbs - you will find 38psi as the RCTIP.
HTH
What's your experiences been with these tires and @ what pressure?
Have same spec/size. The shop set mine to door jamb cold on install (33 IIRC), I bumped it up to 37 which feels good. I will go up to recommended to see the difference, but curious if you have any feedback on different numbers. 42 sounds harsh already.
Thanks!
Hmmm, my copy (Toyo) has this on pg. 36 preceding 37. Reinforced Load Inflation Table WARNING! Only use for ISO Metric (ETRTO) sizes. DO NOT use this table for P-Metric sizes. I thought I had the latest but guess not.
Thanks for the assistance!
I barely have any miles on them yet to start messing with pressure.
Will report back soon though, as I’m going to make some adjustments this weekend. If I forget to update here. Feel free to shoot me a PM
gaijin
GOLD Star
Your tires are not P-Metric, they are ISO-Metric.
FYI, here is a link to the latest extant tables published by Toyo: Guidelines for the Application of Load and Inflation Tables
HTH
Yeah, I stepped in it didn't I?
gaijin
GOLD Star
Not really, now that you know, you can pass on the knowledge.
For the visual learners in the group, here's what Page 37 looks like (highlighted RCTIP):
HTH
