Tires - 265/70 vs. 265/75 - honest opinions wanted
05-05-2004, 12:44 PM
#41
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You are correct, its called the "moment of interia" in physics.
Additional rotational mass will take away from acceleration. That is what I was trying to say all along.
Additional rotational mass will take away from acceleration. That is what I was trying to say all along.
How can I break this down: ok let equalize the real cause, imagine 1 foot tall wheels and 10 foot tall wheels on a vehicle, both types of wheels of equal weight, with same rotational force applied to either. Even if the 10 foot wheel weigh nothing it would still be much slower. Overcoming few pounds extra per tire is insignificant comparing to overall vehicle weight.
05-05-2004, 01:06 PM
#42
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Originally Posted by 4RUNR
True, but decrease in acceleration and stopping is not due to the extra weight but by far rather due to the increase in diameter.
My main point was that friction, rotational mass, and overall diameter are the parasites of our acceleration and MPG losses when going from 265/70’s to 265/75’s.
05-05-2004, 05:41 PM
#43
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Originally Posted by <96 Runner>
Not trying to nit pick semantics here, but either what I said is a factor or it isn't. I agree that the increase in diameter plays a far greater role in loss of acceleration, but the additional mass of the tire also makes a difference, even if it is slight.
My main point was that friction, rotational mass, and overall diameter are the parasites of our acceleration and MPG losses when going from 265/70’s to 265/75’s.
My main point was that friction, rotational mass, and overall diameter are the parasites of our acceleration and MPG losses when going from 265/70’s to 265/75’s.
Are you saying that I should be able to go zero to 60 in 3.0 seconds and get 80 mpg if you were to switch to 155/80 13s?
Did you get the PP 1" too?
05-05-2004, 07:06 PM
#46
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I went from 265/70/16 goodyear rt/s (street tire) to 265/75/16 BFG T/A KO's all terrains and I LOVE THEM. They are my favorite "mod" if you can call it that, they are great in most weather (rain could be better), didn't notice any mpg difference, and no power loss (but I did the ISR and deck plate too, maybe it compensated).
Go with 265/75.
And about somebody rubbing w/ 265/75, that seems kind of weird, mine don't even come close and I'm riding on stock springs and shocks with 265k on them so theyr'e definitely sagging.
Go with 265/75.
And about somebody rubbing w/ 265/75, that seems kind of weird, mine don't even come close and I'm riding on stock springs and shocks with 265k on them so theyr'e definitely sagging.
05-05-2004, 07:13 PM
#47
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Bob,
Thanks again for all the email consultations the other month. In the end I opted for a fresh set of '99 4WD V6 coils from Toyota and a set of Bilsteins. The install took around three hours and I now have 18.75" at the body seam, and 36" at each fender lip. Well over an inch from the stock low-rider look I had before! The tires are awesome (well after two days of use...).
Andreas
Thanks again for all the email consultations the other month. In the end I opted for a fresh set of '99 4WD V6 coils from Toyota and a set of Bilsteins. The install took around three hours and I now have 18.75" at the body seam, and 36" at each fender lip. Well over an inch from the stock low-rider look I had before! The tires are awesome (well after two days of use...).
Andreas
05-05-2004, 07:25 PM
#48
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Are you saying that I should be able to go zero to 60 in 3.0 seconds and get 80 mpg if you were to switch to 155/80 13s?
05-05-2004, 07:42 PM
#49
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Originally Posted by PistonSlap
Are you saying that I should be able to go zero to 60 in 3.0 seconds and get 80 mpg if you were to switch to 155/80 13s?
05-06-2004, 09:17 AM
#53
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Originally Posted by mgspann
Nice ride Andreas. Was there supposed to be some link to follow? If so I don't see it.
cheers!
cheers!
No link - just new to the YotaTech posting methodology...
Andreas
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