Got my 285/75 R16 Revos after reading all the rave reviews. What is the recommended pressure. The knuckle-head at the tire shop aired them to 32 and I bumped it up to 40psi. what say you???
BTW its a stock 97 FZJ-80 that wants to be lifted...just can muster the $$ right now
i think i read 40's in the FAQ' section for the 80's.
curious, did you go with the 6ply or 10ply revos? was told 6ply will do fine under regular conditions . . . just wondering if 10 ply is necessary, overkill, or better for piece of mind...?
Not sure, I think the becuase of the size (285/75 R16) it is automatically a 10 ply. When I ordered the tires there was not a differentiation between ply size/load rating.
Well, I have the 275's and they're not an LT tire and I run them at 32lbs...so I would assume that you are correct to air them up since the 285 is an LT tire. Thats just my guess though
I have the P275/75R16 and have them at 32psi
I am pretty sure LT 285's are automatically 10ply, i like the 275's so much the 285's are most likely my next tire unless I change my driving habits. I handle snow very well too.
I have about 25k on mine and there is a lot of tread left. 98% DD
Mine have been at 35 and they drive, handle, and wear great. I have thought about going up to 40, as I am pretty heavy, but 35 is fine so far. I hesitate making them too hard due to negative evasive handling characteristics of heavy trucks with hard tires.
I have been running that exact tire @ 38psi. Hanna in back/ARB in front w/ OME heavy on all corners and think its just perfect !
Nearly 55k miles in 2yrs since I bought 'em and they are down to 50% tread remaining ! < rotate every 6k religiously >
I have been running that exact tire @ 38psi. Hanna in back/ARB in front w/ OME heavy on all corners and think its just perfect !
Nearly 55k miles in 2yrs since I bought 'em and they are down to 50% tread remaining ! < rotate every 6k religiously >
Not sure, I think the becuase of the size (285/75 R16) it is automatically a 10 ply. When I ordered the tires there was not a differentiation between ply size/load rating.
gotcha, shoulda checked the chart first, i just assumed since i was looking at the 265's and they came in 6 and 10 ply, maybe cuz of the size 10 ply is standard..
LT265/75R16 112/109S C
LT265/75R16 123/120R E
LT285/75R16 122/119R
Just as another data point, I'm running my 285's at 32 psi. I've noticed that if I'm at 36 to 40 (never gone anything above 40 psi) it is too easy to spin tires on acceleration, the ABS kicks on faster on slightly bumpy surfaces, and in general the handling is harsher. Another thing that I've noticed is that the Revos are NOT safe below 18 to 20 psi on trails; the sidewalls fold over fast and can also cut easier at those pressures. HTH.
You forgot he is going from a P-metric to an LT tire. He needs to increase the pressure by 8-10 psi over the stock pressure to compensate. I have covered this before and I believe it is in the FAQ.
OK, so not over 40 and maybe as low as 35psi. If my truck is still stock then where would it be best to keep them? I'm guessing 36-38 but I also vote independent
The correct tire pressure is dependent on the specific tire (particularly the load rating) and the weight carried by each tire. The pressure recommended by Toyota was based on the stock P275/70R16 with a load index of 114 and the weight of the truck. When I bought my tires at Discount Tire I asked for a publication they have called "Determining Air Pressure for a New Tire Size". It allows you to take the manufacturers recommended air pressure and convert it to your new tire based on referencing various load range/index tables.
I have the same Revos as you (load index 122, load range D) with a stock weight truck. Here is how the process works:
- The table shows that the stock tire with a load index of 114 and 32psi has a load carrying capacity of 2,355 pounds.
- When replacing a P-metric tire with non P-metric tire, you reduce the rated load by 9-10%. So the new load carrying capacity is 2,355 - (10% x 2,355) = 2,120.
- Now going to the table for a D load range tire, you match the 122 load rating and 2,120 load carrying capacity calculated above and it recommends 35psi.
I cannot find this publication or tables on-line anywhere, you might call your local tire shops and see if they have it.
Do a search and you'll also see threads on wetting your tire (or using chalk) and observing the tread pattern.
Interesting stuff - thanks! Also, another data point. On the same day a couple years ago I put new Revos on both trucks. One truck has run them continuously while the other truck has winter tires swapped out so has half the wear on its Revos. I measured them and can only barely tell the difference. I think these are going to last me over 50,000 miles at this rate. Can't say enough good about them, cause they grip like they're a softer compound than the low wear rate would imply. Thanks for the tip on the trail usage as I was hoping to use them offroad and will now watch them carefully at low pressures.
