gaijin
GOLD Star
Out of curiosity, what tire pressure are you running?
200 Series Tire and Wheel Size Database (8 Viewers)
- Thread starter MScruiser
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
Out of curiosity, what tire pressure are you running?
Currently 38, but I might play with it a bit.
gaijin
GOLD Star
Just for your info,"The Book" says those 33x12.50R18LT tires should be inflated to 44psi F/R in order to meet the minimum required Load Limit of 2,286 pounds/tire.
At 38psi, your Load Limit is slightly low at only 1,897 pounds/tire - that's 17% underinflated.
Obviously, whatever tire pressure you choose to run is up to you, but you might want to "play a bit" with pressures centered around 44psi - just to be on the safe side.
HTH
Appreciate the feedback.
Couldn't deal with the mind numbing vibration and road noise of the Cooper stt's, so mounted some michelin ltx at2 to the spartan 20-hole 17x7 steelies.
Tires (P265/70R17) $225 per tire.
Wheels: $350 (brand new set of 5)
Running on ome sport suspension 2.5" lift and 35mm h&r spacers.
Does much better in the desert with on road pressure, currently running 38psi cold, the coopers I used to inflate upto 40-45 cold as they handled terrible with less than that. Much smoother on road and no road noise so far. Still need to do an extended desert run main issue I'll have is the narrow 7" wheel threatening me with popouts.
Tires (P265/70R17) $225 per tire.
Wheels: $350 (brand new set of 5)
Running on ome sport suspension 2.5" lift and 35mm h&r spacers.
Does much better in the desert with on road pressure, currently running 38psi cold, the coopers I used to inflate upto 40-45 cold as they handled terrible with less than that. Much smoother on road and no road noise so far. Still need to do an extended desert run main issue I'll have is the narrow 7" wheel threatening me with popouts.
Last edited:
First of all, this thread is great and is the perfect example of how a community forum can benefit all of its members.
I'm currently running stock wheels with 285/65/18 Nitto Terra Grapplers. I recently purchased four TRD RW's with low mileage KO2's (285/70/17) that will be mounted at the same time I'm having an OME suspension upgrade performed. I've seen posts here with people running the same setup at PSIs of anywhere from 39 to 44. Is it purely a matter of comfort in deciding what PSI to run? What's the lowest that can be safely run both on-road and off? I'm thinking about initially just splitting the difference and going with about 42 PSI front and rear, then adjusting if necessary after a few days of driving.
I'm currently running stock wheels with 285/65/18 Nitto Terra Grapplers. I recently purchased four TRD RW's with low mileage KO2's (285/70/17) that will be mounted at the same time I'm having an OME suspension upgrade performed. I've seen posts here with people running the same setup at PSIs of anywhere from 39 to 44. Is it purely a matter of comfort in deciding what PSI to run? What's the lowest that can be safely run both on-road and off? I'm thinking about initially just splitting the difference and going with about 42 PSI front and rear, then adjusting if necessary after a few days of driving.
gaijin
GOLD Star
The recommended Cold Tire Inflation Pressure for the LT285/70-17 tires on a 200 series Land Cruiser is 40psi F/R. This is obviously for on-road use.
HTH
Edit to add: Read the epic thread on this subject here: Tire Pressure for Rock Warriors with LT285/70/17, Load range Es?
Last edited:
gaijin
GOLD Star
If they are LT315/70R17 on your '08 LC200, then you're stuck with 35psi F/R. That pressure gives you more Load Limit than you require - 2,535 pounds which is 249 pounds more than recommended, but 35psi is the minimum recommended Cold Tire Inflation Pressure for that tire.
HTH
gaijin
GOLD Star
@Willy beamin, (in response to your deleted post showing GAW for front and rear on your truck):
No, those numbers do not change my recommendation.
But, if your GAWR's are the same as mine:
Your 3600 pound front axle is already a little over the 3595 pound GAWR for the front.
Rear still looks OK.
The recommended 35psi F/R will safely accomodate everything up to the GVWR of 7385 pounds. If you get over that, then probably the tires would be the least of your worries.
HTH
No, those numbers do not change my recommendation.
But, if your GAWR's are the same as mine:
Your 3600 pound front axle is already a little over the 3595 pound GAWR for the front.
Rear still looks OK.
The recommended 35psi F/R will safely accomodate everything up to the GVWR of 7385 pounds. If you get over that, then probably the tires would be the least of your worries.
HTH
Last edited:
Thanks for the answer. I deleted because I wasn't sure if I was asking a dumb question or not - lol ... thanks for bringing the label and stats to my attention. What would be the other concern if the weight surpassed that you mentioned so I can understand that.@Willy beamin, (in response to your deleted post showing GAW for front and rear on your truck):
No, those numbers do not change my recommendation.
But, if your GAWR's are the same as mine:
Your 3600 pound front axle is already a little over the 3595 pound GAWR for the front.
Rear still looks OK.
The recommended 35psi F/R will safely accomodate everything up to the GVWR of 7385 pounds. If you get over that, then probably the tires would be the least of your worries.
HTH
Markuson
SILVER Star
There are dumb questions?
Aw man! I'd better go police up me own dumb-question posts!
gaijin
GOLD Star
No such thing as a stupid question - after all, not one of us knows what we do not know.
The GAWR (Gross Axle Weight Rating) is the maximum allowable total operating weight supported by an axle (including passengers, cargo, fuel and wheel/tire unsprung weight) over which the vehicle is deemed unsafe by the manufacturer. When you had your rig weighed and determined that the front GAW (Gross Axle Weight) was 3600 pounds, you found that you are over the GAWR of 3595 pounds for the front axle. Whatever condition your rig was in when it was on the scales should be the maximum weight at which you ever operate your vehicle unless you can shift some of that weight off the front axle and onto the rear axle.
The GVWR (Gross Vehicle Weight Rating) is the maximum allowable total operating weight of the vehicle, including passengers, cargo, fuel, etc. In the case of your LC200, this weight should be distributed such that no more than 3595 pounds is supported by the front axle, no more than 4300 pounds is supported by the rear axle, and the total weight should be no more than 7385 pounds.
Exceed any of these maximum weights and bad things can happen like major drivetrain, suspension or chassis failures.
Toyota takes these limits very seriously. For example, ever wonder about this yellow sticker found on your Driver Side door jamb?
It indicates that equipment was added to your vehicle after the limits were set that have reduced the Load Carrying Capacity of your vehicle. These additions are usually PIO (Port Installed Options) like the rear entertainment system, etc.
What it means is, that your vehicle can no longer carry the load specified in the Owner's Manual. So, when you see this in your OM:
You need to reduce the Total Load Capacity stated in the manual from 1295 pounds / 585 kilograms by the amount on the yellow sticker which results in a new Total Load Capacity of 1278 pounds / 577 kilograms.
Technically, every time we change our vehicles by adding or subtracting weight, we should be adjusting the Total Load Capacity. Add 200 pounds of bumper/winch? Then the new Total Load Capacity is reduced to 1095 pounds.
Then, trailers, trailer weight and tongue weight is a whole 'nother level of complication.
HTH
Markuson
SILVER Star
No such thing as a stupid question - after all, not one of us knows what we do not know.
The GAWR (Gross Axle Weight Rating) is the maximum allowable total operating weight supported by an axle (including passengers, cargo, fuel and wheel/tire unsprung weight) over which the vehicle is deemed unsafe by the manufacturer. When you had your rig weighed and determined that the front GAW (Gross Axle Weight) was 3600 pounds, you found that you are over the GAWR of 3595 pounds for the front axle. Whatever condition your rig was in when it was on the scales should be the maximum weight at which you ever operate your vehicle unless you can shift some of that weight off the front axle and onto the rear axle.
The GVWR (Gross Vehicle Weight Rating) is the maximum allowable total operating weight of the vehicle, including passengers, cargo, fuel, etc. In the case of your LC200, this weight should be distributed such that no more than 3595 pounds is supported by the front axle, no more than 4300 pounds is supported by the rear axle, and the total weight should be no more than 7385 pounds.
Exceed any of these maximum weights and bad things can happen like major drivetrain, suspension or chassis failures.
Toyota takes these limits very seriously. For example, ever wonder about this yellow sticker found on your Driver Side door jamb?
It indicates that equipment was added to your vehicle after the limits were set that have reduced the Load Carrying Capacity of your vehicle. These additions are usually PIO (Port Installed Options) like the rear entertainment system, etc.
What it means is, that your vehicle can no longer carry the load specified in the Owner's Manual. So, when you see this in your OM:
You need to reduce the Total Load Capacity stated in the manual from 1295 pounds / 585 kilograms by the amount on the yellow sticker which results in a new Total Load Capacity of 1278 pounds / 577 kilograms.
Technically, every time we change our vehicles by adding or subtracting weight, we should be adjusting the Total Load Capacity. Add 200 pounds of bumper/winch? Then the new Total Load Capacity is reduced to 1095 pounds.
Then, trailers, trailer weight and tongue weight is a whole 'nother level of complication.
HTH
My question is...
-To what extent does upgraded suspension adjust this UPWARD?
What is the weakest link?
-f it's the bearings...or axle...or tires... What?
I would think knowing the weak link is critical, since many of us will add HUNDREDS of pounds of doodads (160lb front bumper, 100lb winch, 50lb of extra battery, 160lb rear bumper, 130lb drawers, 100lbs of slider, 50lbs of skids... Boom. That's 750lbs. Add 400 pounds with a driver and passenger...and that's 1150lbs without ANY luggage...extra fuel...water...gear...etc.
Seems like there's gotta be a way to increase that limit.
So again... Anyone know:
1) What the weakest link is
2) Assuming stock suspension is a major weak link...how to adjust upward? Because I can tell you that on even basic wheeling/camping trips, I'm going to easily be over the limit.
gaijin
GOLD Star
Or DOWNWARD? A change in the "suspension" may not necessarily be an upgrade vis a vis Load Capacity.
I have always thought the answers to these very good questions should be the responsibility of the aftermarket parts suppliers, but they do not provide the info/data relating to Load Capacity; probably because of the many variables involved.
Our best precaution in this matter is probably awareness. Sorry I don't have a better answer for you.
HTH
