1engineer
Moderator
It does not matter what "seems" or "feels" in this case. The fact is they are adding unsprung mass and that WILL affect acceleration and efficiency.
My First Mod! BFG KO2's with Initial Impressions
- Thread starter tinman831
- Start date
It does not matter what "seems" or "feels" in this case. The fact is they are adding unsprung mass and that WILL affect acceleration and efficiency.
Jhalko
New member
Your comments don't make sense to me, maybe I'm misunderstanding but an LT should have more pressure.
http://www.toyota-4runner.org/engin...s/110299-lt-tires-need-more-air-pressure.html
e60ral
Banned
Maybe i looked it up wrong before, what is the factory load rating? if its 113 it should be higher.
Go to the following link: http://static1.1.sqspcdn.com/static/f/589830/23447320/1378330097907/Discount+Tire+inflation.pdf
If i remember correctly the factory tires had a load rating of 113. 113 at 32 psi is 2299, derated is 2090
BFG K02 C-load has load rating 112 so from the loading tables it should be 39-40
i went through and calculated 35.5 before but now i can't remember why, maybe i was using my actual vehicle weight before? so i guess disregard the 35-36 until i can remember if it made sense.
edit: see post below, i was going off the vehicle weight before when i got that number
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Jhalko
New member
Not according to most manufacturers and the link I posted, which came from an engineer, whatever that worth.
1engineer
Moderator
Hey now...
e60ral
Banned
looking at my numbers, i think i used the psi to match the GVWR. 36 gives me good chalk contact, higher does not contact on the edges (which makes sense because it is overinflated for the load). 39-40 would match the equivalent per the inflation table but this is a much higher load rating than is needed and for me gave me a poor contact patch when chalked
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ToyoDriver
New member
Load C 265s
LandCruiser
New member
Must be a southern thing.
Every tire shop in Alabama and Florida seemed unable to do a simple task of balancing wheels and tires and felt the need to throw weights at the problem.
Every tire shop in Alabama and Florida seemed unable to do a simple task of balancing wheels and tires and felt the need to throw weights at the problem.
Aurora85
New member
Yes but a few pounds could be negligible from a driving perspective. I'm sure I would feel the difference with 275s as they add a decent amount of weight. 265s I may not notice as much.
Jhalko
New member
Chalk test would probably always give you something different, not sure how many folks would even know what that is these days. But many folks, and based on posts even plenty on here, don't adjust their pressure based on what they are loading in their truck and we know plenty of tire shops underinflate LT tires. I'm pretty sensitive given the weight I have on my truck and when I load everything, put the RTT on, and the family climbs in she is HEAVY.
Anyway I think I've sidetracked the OP's thread enough, haha.
4runnin4mylife
New member
That depends on if you went with 265 C or 265 E load rating. If you go with 265 C load range (which I did read this guy swapped his 275 E's for) of course you are going to feel a difference against the 275 E load range because of the weight. It's approximately 9 lbs per tire difference. But you will "feel" close to the same difference between the 265 C and the 265 E! The 265 E and 275 E only have a 2.6 lbs. difference.
Yes, I know MOST of us can read charts, so I am stating the obvious, but just wanted to bring up its the load range that is adding the weight and changing the "feel" of how the 4runner is driving, accelerating, etc., not so much the tire size in this example.
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