Dous
New member
Yea that might be something to consider but I am not that worried about it. If you were lifted pretty high with suspension and BL you might feel a little more top heavy, but I am just running a mild suspension lift to keep my COG low
Why not 255/85/16?
- Thread starter Dous
- Start date
Yea that might be something to consider but I am not that worried about it. If you were lifted pretty high with suspension and BL you might feel a little more top heavy, but I am just running a mild suspension lift to keep my COG low
spectre6000
New member
Nope. The thread title very specifically refers to 255/85/R16 (look up). They are (depending on manufacturer variance) roughly 3/8" narrower than stock. If you are able to find some lightly rated sidewall in 255/85/R16 tires, then I suppose you might have a point. That said, I've never seen anything less than a D rating (only one or two at that), and most all of them are E rated. I reiterate: negligible, and thusly dismissed.
MDST
Member
I had Toyo MT in 235/85R16. Toyos MT are very quiet. So quiet I can assume the rubber is softer so it should wear faster. And yeah, they wear a little faster compared with Goodrich.
Now I have 255/85R16 Cooper Discoverer ST, and I'm pretty sure they have the same width as the Toyo MT 235/85 or maybe a little less.
All brands have different sizes in the same denomination tires.
Cheers
Now I have 255/85R16 Cooper Discoverer ST, and I'm pretty sure they have the same width as the Toyo MT 235/85 or maybe a little less.
All brands have different sizes in the same denomination tires.
Cheers
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curtperry
New member
The entirety of this thread has been discussion of wide vs skinny tires of approximate 33 inch diameter and I don't see "vs stock" in the title. These tires sizes are used on lifted 4runners.
I am merely advising folks to increase track width with lifted vehicles by using the appropriate wheels/spacers even if it's not needed for upper control arm clearance. The wider tire doesn't make as large a difference as a spacer but it does help and to ignore that because it doesn't support your position is called Cognitive Dissonance, have a read.
PhdNPrerunners
New member
How do you like the Coopers? I really want to run this size but I really don't feel like running a mud tire on my DD. I wish they made an all terrain in this size
Dous
New member
If you off road at all on rocks I would tell you to avoid them
A gentlemen I wheel with bought them from Discount, first tripe to Uwharrie they were SHREDDED, and he doesn't spin the tires, front and rear locked.
There were lugs and chunks missing everywhere, so he went back to Discount and with the 30 day refund he returned them and bough KM2's
spectre6000
New member
The OP asks why 255s aren't more common (yes, the obvious comparison is to 285s). The answer for a good 98% of the 285-running population is simply fashion and/or ignorance. If you spend $(any) on spacers for such an infinitesimally insignificant decrease in tipability, your "return on investment" is about as good as just tossing LC axles under there to the same end (cognitive dissonance hurting yet?); 1/infinity is only slightly less than 1/(infinity+1). If you do something in your 4Runner so ridiculous that it rolls due to a narrow a wheel base with 255s and an otherwise stock suspension (as in no long travel or some other track widening modification), a half inch of extra track isn't going to help you.
MDST
Member
I miss the aggressive look that Toyos gives but, I'm very happy with Cooper. They are D rating and Toyos are E.
The Coopper ST are very similar to Goodrich AT in the sidewall. The rubber seen to be stronger too.
Cooper Discoverer S/T Tires - All Terrain Tire Reviews
MDST
Member
Mmm maybe the rubber was damaged, expired! Not yet happened to me with my open diffs.
Anyway is good to know :thumb3:
PhdNPrerunners
New member
Do you happen to have any pics of your rig with the toyos and coopers?
hulk311
New member
You had 235/85R16? Can you tell us more or post some photos. I had 255/85/16 Coopers ST but sold them as I didn't do that much offroading and the noise and rough ride almost made me go insane. How much narrower is the 235/85/16 from the 255/85/16 tire? The idea of a 235 tire for someone who offroads only 5% of the time kinda of intrigues me.
PhdNPrerunners
New member
There are quite a few tire choices in the 235/85/16 size. I wonder if they would be too skinny for our rigs
Dous
New member
hulk311
New member
I agree they would look goofy but who cares! From what I've seen on other SUVs they look pretty cool.
Here is some info I got from another site on pizza cutters:
1. Reduced rotating mass (easier to accelerate and stop)
2. Reduced reciprocating mass- think suspension up and down (easier to dampen and control with the shock and spring)
3. Lower rolling resistance (think better MPG and more power! Cool!)
4. Lower air resistance (both rotating and frontal)
5. Easier to store and change (hey, you can put it on your bonnet)
6. Much easier on the drivetrain
7. Much easier on the steering components
8. Easier on the bearing, spindles and knuckles
9. Less frontal resistance in shallow snow and mud
10. Hey, the are also CHEAPER to buy and better on the environment too!
Here is some info I got from another site on pizza cutters:
1. Reduced rotating mass (easier to accelerate and stop)
2. Reduced reciprocating mass- think suspension up and down (easier to dampen and control with the shock and spring)
3. Lower rolling resistance (think better MPG and more power! Cool!)
4. Lower air resistance (both rotating and frontal)
5. Easier to store and change (hey, you can put it on your bonnet)
6. Much easier on the drivetrain
7. Much easier on the steering components
8. Easier on the bearing, spindles and knuckles
9. Less frontal resistance in shallow snow and mud
10. Hey, the are also CHEAPER to buy and better on the environment too!
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PhdNPrerunners
New member
There are quite a few guys on TacomaWorld running the 235s duratracs and they don't look too bad
spectre6000
New member
Going solely on the specified tire size, 235/85/16 is only 0.1" taller than stock tires on a Limited (265/75/16), and over an inch narrower. The gains off road are as illustrated in the linked white paper a few pages back, but you don't gain anything in terms of clearance or approach angle (which is the primary reason most people deviate from stock tire sizes). At least your speedo won't need recalibration.... Generally (at least academically) the goal is to get the largest tires you can find as close to the stock width as possible without requiring significant modification. For 3rd Gen 4Runners specifically, this is exactly 255/85/16. You may have some rubbing at full lock/full stuff, but that's it. A body lift solves this without any appreciable compromise.
255/85/16 is the tire size of choice among the expo guys because they do their homework, invest in their rigs, and make choices based on function over form. Take note.
255/85/16 is the tire size of choice among the expo guys because they do their homework, invest in their rigs, and make choices based on function over form. Take note.
hulk311
New member
Yeah plus if you're on an expedition for weeks or months at a time the fuel saving of 255 vs 285 is huge.
Here is a 235/85r16 next to 265/75r16.
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curtperry
New member
I'm sure glad we haven't killed this thread yet because I think its a worthwhile discussion and I'm glad people are looking at all the options. I haven't ruled out 255's for my next tire purchase so I find it interesting.
I put everything I love in this world(wife+kids) in my 4runner most every day. And because of that I take safety seriously.
NHTSA gives 4runners a rollover resistance score of 3, which means they have a 20-30% chance of rollover in a single-vehicle accident. That chance is only increased by raising the COG to run 33's
The Spacers/Adapters that most people use are ~$200 for a set of 4 and give you 2.5" or 3" of extra track width, that's not a small change and it will help lateral stability. It certainly isn't comparable in expense or time to converting to SAS from a LC.
285's stick out ~15mm more than 255's, not insignificant.
I'll leave it at that.
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PhdNPrerunners
New member
That Tacoma doesn't look bad at all!
Keep in mind that spacers have a few disadvantages that effect safety:
- You are introducing a second set of lug nuts on each wheel which are known to loosen up from time to time.
Are wheel spacers safe - Jeep Wrangler Forum
- They alter your wheel offset which adds more load to your wheelbearings since the force is no longer inline with the bearing and instead imparts a rotational force.
- The change in offset also alters the relationship between the contact patch and the point where the steering axis intersects the ground (the Dave point) which can add bump steer.
Sport Compact Car: Technobabble: September 1999
That said, I agree with you that it makes sense to widen the track when you lift a truck to somewhat offset the higher center of gravity. Another option to consider is to switch to a wider rim with a slightly lower offset, such as a Land Cruiser wheel. You can often find these for ~$300 and they increase the track width somewhere between 1" and 2".
- Matt
