Aggressive 4Runner tires in 265 70 R16.
Larry A. Little
4Runner -- the stock tire size is 265 70 R16. I really wanted to get
the BFGoodrich All Terrain T/A KO's, but they won't be available in
this size for a few months. I CAN currently get the BFG T/A's in 275
70 R16's or 265 75 R16's -- my question is whether or not it would be
better to stick with the stock tire size in a different tire, or go
with the slightly larger BFG's.
Does anyone know of a tire with the same level of quality and
aggressiveness as the BFG AT T/A that's available in 265 70 R16?
Thanks,
Larry
Nick Leinonen
taller than the 275/70/16. either will fit fine, but the 275/70's will
have less effect on the speedo calibration
Larry A. Little
heavier, will there be any noticeable change in power or fuel
efficiency? Also, I was told that the antilock brakes are calibrated
for a given diameter wheel -- how will this be effected?
Is there any chance of the 275/70 rubbing on anything, or are the
clearances big enough to accommodate this larger size?
Thanks,
Larry
Nick Leinonen <nickle...@home.com.nospam> wrote in message
news:396484AE...@home.com.nospam...
Nick Leinonen
runners had 31x10.5x15 tires. they are the equivalent size to 265/75/16
and they had no problems with clearance. the 275/70 is is just 14 mm
taller than the 265/70. that's about the same difference that you have
with a set of 265/70's that are worn down to the TWI and a set of brand
new ones. TWI being 3/16" tread left and new being 1/2" tread, the
difference is 5/16" per side so total being 5/8" difference in height from
new to worn out. 5/8" = 15.875 mm, and the difference from 265/70 to
275/70 is 14 mm. that is not going to make any noticeable difference at
all. the brakes will work the same as usual, and fuel economy will stay
the same. you loose a bit by going to a wider tire but you gain it all
back by having a slightly taller tire.
i hope that this whole thing makes sense to you and others..
nick
Larry A. Little
nearby Toyota dealer, that the 275/70 would screw up the antilock
brake system, which were calibrated to the 265/70 tires. Do you have
any knowledge in this area? I have no idea who to believe at this
point.
Thanks,
Larry
Nick Leinonen <nickle...@home.com.nospam> wrote in message
news:39650CE4...@home.com.nospam...
sbest
<lali...@earthlink.net> wrote:
><SNIP>
>The thing that bothers me is that a Toyota mechanic said that the
>larger tires "should be okay" until he found out that I had ABS, then
>he suddenly changed his tune as said not to put on the 275's since
>this would "screw up the antilock brake system." He didn't have time
>to go into detail, and I have no idea why this would be a problem, but
>this is what he said and it has me a bit concerned since he seemed to
>know what he was talking about.
What he told you is the "safe" answer.
He knows the proper size will work fine but doesn't know if larger will,
and can't fix the problem if they do mess up your ABS.
I have swapped larger and smaller diameter tires onto my 4-channel ABS
and Traction Assist equiped 92 Crown Vic (not a truck I know) with no
problems. If all 4 tires are swapped I cannot foresee a problem.
You sometime have to take a chance in life, and when you get to the edge
of the cliff you were warned about, you find it wasn't so tall afterall!
>PS -- How good are the Dueler A/T's for off road? I can currently get
>these in the "proper" size and have been told by some that they're
>decent. How much of a step down would these be compared to the BFG
>AT's.
I don't really know, but I didn't think the BFG A/Ts were all that good
at off-road? These are basically just aggresive street tires, both tend to
clog up in mud I hear (I have BFG A/Ts, M/Ts and some Cooper SSTs).
Steve Best, Nova Scotia, Canada
4x4 van website:
http://www.glinx.com/users/sbest
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Nick Leinonen
your ABS?? if someone can give me a valid reason why it will screw up the
abs, i am all ears. the difference is about 1/2" don't worry man, that's
1/4" per side, or half the tread depth. just out of curiosity, what are
the tires you have on it now. i just want to see the specs as to how tall
they were when new. i know that the super swamper ssr 265/70/16 is taller
than the BFG a/t 275/70/16. just go with the 275's and don't worry.
"Larry A. Little" wrote:
> > the same. you loose a bit by going to a wider tire but you gain it
> all
Jerry Bransford
one of the tires is sliding or slipping. If all the tires are rotating
at the same (or close) rpms, then the ABS won't have a problem. For
general purposes, the ABS manufacturers recommend staying within 20% of
the original tire diameter but that's a pretty big jump so I wouldn't
worry at all about it. By the way, I went from sub 30" tires to 33"
tires on my ABS equipped Jeep and it's been fine for years.
Jerry
--
Jerry Bransford
PP-ASEL KC6TAY
The Zen Hotdog... make me one with everything!
Geezer Jeep: http://www.jjournal.net/jeep/gallery/JBransfordsTJ/
Larry A. Little
obviously not good for off-road. An interesting note is that the
Bridgestone web site does not list this size in the Dueler H/T chart.
I just looked and confirmed, however, that this is the size and type
of tire on my 4Runner.
The thing that bothers me is that a Toyota mechanic said that the
larger tires "should be okay" until he found out that I had ABS, then
he suddenly changed his tune as said not to put on the 275's since
this would "screw up the antilock brake system." He didn't have time
to go into detail, and I have no idea why this would be a problem, but
this is what he said and it has me a bit concerned since he seemed to
know what he was talking about.
PS -- How good are the Dueler A/T's for off road? I can currently get
these in the "proper" size and have been told by some that they're
decent. How much of a step down would these be compared to the BFG
AT's.
Thanks,
Larry
Nick Leinonen <nickle...@home.com.nospam> wrote in message
news:3966A7E5...@home.com.nospam...
sbest
<lali...@earthlink.net> wrote:
>My frustration is simply that there are people out there who
>understand exactly how ABS works and whether or not larger size tires
>would effect it -- it would be great if someone with this knowledge
>would explain to me the mechanical specifics of this issue. I'm
>fairly surprised that the only explanations I've been able to get from
>a great deal of sources is that there "should" or "should not" be a
>problem with absolutely no mechanical facts to back up the claims. I
>would have thought that I'd be able to get some more concrete
>information on this.
I hear you Larry.
I am an industrial technician working with mechanical, electrical, and
electronic gear. I read up and have done some repairs on my ABS system and
don't find it all that mysterious. When I wanted to put 2" taller tires on
the car for winter snow clearance, I asked the same questions to the local
automotive techs and the newsgroups. I got the same "shouldn't" answers.
So I reasoned it out.
If all 4 tires are increased the same size there would be no speed
differences between each, so that shouldn't make any problems for the ABS.
The wheelspeed would be slowed down for a given road speed. That might
affect some things like the ABS minimum speed cut out (raising it) or make
it a little less sensitive to wheelspeed variations by a factor of 6%, but
impending lockup should have much greater wheelspeed variation than that.
My worry with larger tires was that the ABS action would "clunky" and with
the smaller tires it would be overly sensetive and come on too often.
As it turned out, neither worry materialized. I worked perfect.
>As far as jumping off the cliff goes, I generally agree. At the same
>time, however, I see no reason not to ask these questions since my
>timeline allows it. Given the fact that there are specific monetary
>issue involved, I'd like to have as much information as possible
>before I make a decision.
Absolutely Larry! And in my past few years on this newsgroup I have
heard your worries and the advice you were given many times.
I have not heard any horror stories about adverse effects of oversized
tires on ABS vehicles. I would suspect this a very safe leap to make! :-)
Nick Leinonen
go to http://www.discounttiredirect.com/ and click on "show me tires", then select year "96" and " toyota truck", then click go. on the next page, pick your 4 runner then again click on go. then select limited, 2WD/4WD, and again click go. now, that we have that done, there is a list of tires that you can use on your 4 runner with no problems. i'd link you to the site, but it is a shockwave or flash site so i can't link directly.
i'd just put on the 275/70, but if you are really worried, just wait
for the 265's to come out..
Larry A. Little
good off road tire is the BFG AT, which at this time is still not
available in 265/70R16 (according to BFGoodrich, it could be anywhere
from a week to three months before that size is actually available.)
If this tire becomes available soon I'll get it, but I need to get
tires within the next week or two so I have my doubts that the BFG
will be available in the "proper" size.
Looking at the other tires of the correct size on that site, I'd have
to say that none of them "look" any better than the Dueler AT -- in
fact, I'd say that the tread design on the Dueler AT looks to be
better for off road than any of the discounttiredirect choices (in
this particular size.) Are you sure you weren't looking at the Dueler
HT?
Larry
Nick Leinonen <nickle...@home.com.nospam> wrote in message
news:3967D44D...@home.com.nospam...
Nick Leinonen
they have, but in the sizes that you are able to put on with out any mods.
265/70/16, 265/75/16, and 275/70/16 all will work well on your 4 runner.
it is your choice what you choose. as for the bridgestone a/t's, if you
mean these ones (http://www.bridgestone-usa.com/products/BSD-AT.htm) these
do not look good to me at all for offroad. i don't give a damn as to what
their press info there says, these are street tires, and for soccer moms.
these tires will be good for the gravel cottage road and the gravel
parking lots where soccer moms have to park their suv's. just by the tread
design, i can see that these will not be good in snow, or mud. for wet,
they should be ok, but not great.
man, just go to a tire dealer and talk to them about tires. dealers don't
know shit at all. they push the 265/70/16 size cause they carry those
tires and want to sell them to you. the 1/2" in height difference doesn't
mean a thing. if your tires right now are worn down to the tread wear
markers, they are 1/2" shorter than they were new. if it's that 1/2"
that's stopping you from getting a good tire, and buying some piece of
shit, drop the air psi in your tires (275/70's) about 5-7 psi, then they
will be the same height as the 265/70's. simple as that.
Larry A. Little
don't
> know shit at all.
The problem is that I HAVE been talking to tire dealers, and for the
most part they don't seem to know much either. Most places seem to
have a "hey, I just work here" attitude and cannot offer ANYTHING in
the way of mechanical expertise -- this even includes some of the
places that supposedly specialize in off road. The most technical
responses to my questions have been along the lines of "it 'should'
work fine" or "it's probably 'best' to stick with the stock size." I
wish I could find someone who could give me solid information on this
subject backed up with mechanical explanations.
So far, no one has been able to give me any type of mechanical reasons
of why a slightly larger tire would (or would not) effect ABS. All I
know is that one of the head mechanics at a local Toyota dealer said
that this would be a problem.
At this point, I definitely leaning toward the BFG AT KO's in the
slightly larger size of 275/70R16. I'm still curious to hear about
what effects I could expect regarding power and mileage.
Larry
Larry A. Little
understand exactly how ABS works and whether or not larger size tires
would effect it -- it would be great if someone with this knowledge
would explain to me the mechanical specifics of this issue. I'm
fairly surprised that the only explanations I've been able to get from
a great deal of sources is that there "should" or "should not" be a
problem with absolutely no mechanical facts to back up the claims. I
would have thought that I'd be able to get some more concrete
information on this.
As far as jumping off the cliff goes, I generally agree. At the same
time, however, I see no reason not to ask these questions since my
timeline allows it. Given the fact that there are specific monetary
issue involved, I'd like to have as much information as possible
before I make a decision.
Larry
> >The thing that bothers me is that a Toyota mechanic said that the
> >larger tires "should be okay" until he found out that I had ABS,
then
> >he suddenly changed his tune as said not to put on the 275's since
> >this would "screw up the antilock brake system." He didn't have
time
> >to go into detail, and I have no idea why this would be a problem,
but
> >this is what he said and it has me a bit concerned since he seemed
to
> >know what he was talking about.
>
> What he told you is the "safe" answer.
> He knows the proper size will work fine but doesn't know if larger
will,
> and can't fix the problem if they do mess up your ABS.
>
> I have swapped larger and smaller diameter tires onto my 4-channel
ABS
> and Traction Assist equiped 92 Crown Vic (not a truck I know) with
no
> problems. If all 4 tires are swapped I cannot foresee a problem.
>
> You sometime have to take a chance in life, and when you get to the
edge
> of the cliff you were warned about, you find it wasn't so tall
afterall!
>
>
> >PS -- How good are the Dueler A/T's for off road? I can currently
get
> >these in the "proper" size and have been told by some that they're
> >decent. How much of a step down would these be compared to the BFG
> >AT's.
>
>
> I don't really know, but I didn't think the BFG A/Ts were all that
good
> at off-road? These are basically just aggresive street tires, both
tend to
> clog up in mud I hear (I have BFG A/Ts, M/Ts and some Cooper SSTs).
>
>
Jerry Bransford
your ABS. ONE larger tire could. All ABS does is look for a large
difference in rpms between wheels where there should be none...
indicating a slipping or skidding tire.
Jerry
--
Nick Leinonen
> slightly larger size of 275/70R16. I'm still curious to hear about
> what effects I could expect regarding power and mileage.
>
> Larry
no difference in fuel economy at all. if you went with a wider size that
was the same height as stock, you would loose a bit of fuel economy due to
the greater rolling resistance of the larger contact patch. but when you
go a bit wider and a bit taller, they cancel each other out so it stays
the same. a taller tire makes the gearing shorter (i think that's the word
e.g... 3.55 =>3.42) so you can go farther per tire rotation than stock.
the difference is so little that you won't notice the power difference.