Tire Weight Concern

[neatoneto]

Hey guys,

Getting to the point where my stock Bridgestone Dueler’s are (finally) wearing out and I’ll need something to replace them and compliment my Bilstein 5100’s 2.5f/1.5r lift.

I know a popular choice with my setup is the 275/70r17 KO2’s which I think look great and sounds like a great investment but I am also between the Cooper ST Maxx in 255/80r17 size because of the thinner tread width but 33” size. My concern with upgrading tire sizes is WEIGHT:

[stock] Bridgestone Duelers: 41lbs
255/75r17 KO2: 45lbs
275/70r17 KO2: 55lbs
255/80r17 Coopers: 58lbs

If I were to do the 275/70 KO2 that is an increase of 14lbs on each tire or 56lbs in total of UNSPRUNG weight. Theoretically speaking each pound of unsorung weight is equal to 4 pounds of sprung weight. That roughly means an increase of 224lbs in driving dynamics!

The three things I’m looking for in a tire are:
-best road performance and fuel economy since I drive 500miles per week
-best snow performance since I sometimes drive 100miles in the snow
-an upgrade in size from the stock 265/70r17

Those of you with 275/70’s.. did you notice a big difference in driving dynamics or fuel economy?

 

[Agent_Outside]

I’m in a similar boat, duratracs in a 285 c rating seem like one of the top choices for me right now. I was actually thinking about making a thread regarding options for and weights of A/T tires that are NOT e rated 285s.

 

[manganos]

Back when I had my FJ and wheeled in the rocks my buddies with Duratracs were always tearing sidewalls up. Have they fixed this or are the sidewalls a known weak point?

 

[WVhillbilly]

I've been running Cooper ST Maxx on my work truck for a few months now.

They are noisy, not terrible but you'll know there are there.
It was about a 1 mpg hit over the all terrains I had on the truck, but it's not like it gets great mileage anyway.

They are fantastic in the snow, very good traction and very planted.

Good in mud also.

I am mostly highway with the truck. But when I have to go to work, I gotta go.
Snow doesn't matter.

And when I'm off the highway, I can be way off the highway.
We have sites where you need 4WD just to get on site every day.

I know of guys who are getting 60K miles out of these tires on 3/4 ton trucks, so they should last a long time on a 4Runner.

Taking another look at the fact that you want good road manners and still have snow performance.
Have you looked at General Grabber AT2s? I had a set on my Tundra and they were great.

 

[sandcrawler]

Hey guys,

Getting to the point where my stock Bridgestone Dueler’s are (finally) wearing out and I’ll need something to replace them and compliment my Bilstein 5100’s 2.5f/1.5r lift.

I know a popular choice with my setup is the 275/70r17 KO2’s which I think look great and sounds like a great investment but I am also between the Cooper ST Maxx in 255/80r17 size because of the thinner tread width but 33” size. My concern with upgrading tire sizes is WEIGHT:

[stock] Bridgestone Duelers: 41lbs
255/75r17 KO2: 45lbs
275/70r17 KO2: 55lbs
255/80r17 Coopers: 58lbs

If I were to do the 275/70 KO2 that is an increase of 14lbs on each tire or 56lbs in total of UNSPRUNG weight. Theoretically speaking each pound of unsorung weight is equal to 4 pounds of sprung weight. That roughly means an increase of 224lbs in driving dynamics!

The three things I’m looking for in a tire are:
-best road performance and fuel economy since I drive 500miles per week
-best snow performance since I sometimes drive 100miles in the snow
-an upgrade in size from the stock 265/70r17

Those of you with 275/70’s.. did you notice a big difference in driving dynamics or fuel economy?

consider getting some new, lighter wheels (i'd go with FN Wheels) to offset the heavier tires. best of both worlds.

 

[yardsale]

I think Falken Wildpeaks are fairly light. And a popular choice. And good looking.

 

[Jin]

I am on factory heavy SR5 wheels, but...

was on 275 Cooper AT3's "C" rated for 40K miles. The dash had 19.6 MPG before i changed to bigger tires.

Have been on 285 Duratracs in "D" rating for a week. Just been driving to work this week. Not heavy stop and go traffic, mostly moderate freeway drives with occational slowdowns...and I am getting 19.4 MPG.

I am pretty easy on the gas, and not driving within the city. I am sure my milage would be alot worse if i did.

 

[sf jakey]

Do you really think the 1/2” difference in clearance is worth going from a 265 c tire to a 275 e tire? This is the dumbest mod I see on these rigs. Stay stock or go to the 285 c for some actual gains in clearance or looks if thats your motivation. With the 275 you pay a weight, ride and performance penalty for no functional improvement.

 

[2012sr5]

I have a similar lift (2" front/1.5" rear), and I've been running Nitto Terra Grappler G2s LT E Load (note these are COMPLETELY different from the P-rated G2s that come from the factory), and I average 19mpg combined driving.

In stock size, these E load G2s are only 45 lbs per tire (that's only 4lbs more per tire than stock Duelers), and in LT 285/70R17, they're only 51 lbs each.

If you need an E load sidewall but don't want the mpg hit of a heavy tire, give these some thought.

 

[T4 Leaf]

I have a similar lift (2" front/1.5" rear), and I've been running Nitto Terra Grappler G2s LT E Load (note these are COMPLETELY different from the P-rated G2s that come from the factory), and I average 19mpg combined driving.



In stock size, these are only 45 lbs per tire, and in LT 285/70R17, they're only 51 lbs each.

I went with 265 K02, less weight and look much beefier than duelers.. parked next to my buddy with worn 285 nittos yesterday and mine kinda looked cooler/bigger/different/ better.... yeah better


Sent from my iPhone using Tapatalk

 

[sandcrawler]

Do you really think the 1/2” difference in clearance is worth going from a 265 c tire to a 275 e tire? This is the dumbest mod I see on these rigs. Stay stock or go to the 285 c for some actual gains in clearance or looks if thats your motivation. With the 275 you pay a weight, ride and performance penalty for no functional improvement.

actually, moving up to a 275/70 yields ~1/4' in additional clearance, and moving up to a 285/70 yields only ~1/2" in additional clearance.

 

[2012sr5]

I went with 265 K02, less weight and look much beefier than duelers.. parked next to my buddy with worn 285 nittos yesterday and mine kinda looked cooler/bigger/different/ better.... yeah better


Sent from my iPhone using Tapatalk

265 KO2s are just under 45 lbs in C load, which is what my E load Nittos weigh. The P-rated Duelers are 41 lbs each.

Some of us don't choose a tire solely on looks, and when you're spinning out trying to take off at a stoplight on barely wet pavement at the slightest incline, I'm sure those KO2s will look extra cool.

 

[03_4x4Runner]

The off road magazines typically say that increasing the tire weight by 10 lbs. is like adding 100 lbs. to the vehicle weight sprung verses unsprung weight). 4 tires times 100 lbs. is like adding 400 lbs. You could add 400lbs of sand bags or one mother inlaw and drive around to see if you like the performance.

 

[jordanrb81]

I have had my 275/70 BFG AT KO2s for a week now, I haven't noticed a change in performance or handling or noise. they are e rated and 55lbs I chose them over the Copper ST/Maxx because they are 4 lbs per tire lighter in that size/E interesting to read the ST/Maxx are louder, I am given to understand that BFG's run "small" and in the same size the Coopers are actually bigger. I don't know if I'll notice anything over a longer period of time but they've clocked about 300 miles so far and no complaints. I wish I could have run the coopers for a week and see which I like better. Oh well a choice had to be made. I should add that I have no lift whatsoever and if I did I would have run 285s

 

[msp]

Hey guys,

Getting to the point where my stock Bridgestone Dueler’s are (finally) wearing out and I’ll need something to replace them and compliment my Bilstein 5100’s 2.5f/1.5r lift.

I know a popular choice with my setup is the 275/70r17 KO2’s which I think look great and sounds like a great investment but I am also between the Cooper ST Maxx in 255/80r17 size because of the thinner tread width but 33” size. My concern with upgrading tire sizes is WEIGHT:

[stock] Bridgestone Duelers: 41lbs
255/75r17 KO2: 45lbs
275/70r17 KO2: 55lbs
255/80r17 Coopers: 58lbs

If I were to do the 275/70 KO2 that is an increase of 14lbs on each tire or 56lbs in total of UNSPRUNG weight. Theoretically speaking each pound of unsorung weight is equal to 4 pounds of sprung weight. That roughly means an increase of 224lbs in driving dynamics!

The three things I’m looking for in a tire are:
-best road performance and fuel economy since I drive 500miles per week
-best snow performance since I sometimes drive 100miles in the snow
-an upgrade in size from the stock 265/70r17

Those of you with 275/70’s.. did you notice a big difference in driving dynamics or fuel economy?

Based on your "things," you don't need a load range E tire. And you're talking about 1/2 inch diameter increase on a 275. I'd go load range C and 265s or 275s if you must. You can't go wrong with KO2s. Head to this thread for actual facts, as opposed to people's subjective opinions

http://www.toyota-4runner.org/5th-gen-t4rs/156378-going-bigger-5th-gen-tire-fitment-guide.html#post1550444

It's the bible. I refer to it a couple times a year.

 

[WVhillbilly]

As someone who has to run rough riding, E rated tires on 3/4 ton trucks.
I'd like to know why everyone thinks they need a heavy ass tire like that on a 4Runner.
My work truck weighs about 6400lbs with tools.
My Titan was 7100.

Those need a tire like that. A 4Runner doesn't.

It's your rig and your money, but I don't know why anyone thinks it's necessary.
If you're looking for a certain size/model tire and it only comes E rated, I'd find a different tire.

 

[PopsSmith]

I'll toss this out there; not sure if it meets your needs

Toyo Open Country AT2, P285/70/17; weight 48lbs

I am on my second set; first set lasted 49k miles. I do a lot of city driving but go into the country/mountains on the weekends.

 

[rayofsi]

had st maxx 255/80/r17

swapped them out for kumho at51 275/70r17 47lbs per tire instead of 58. seems to work better in snow compared to the st maxx. better ride, slightly better fuel econ.

 

[KP Texan]

As someone who has to run rough riding, E rated tires on 3/4 ton trucks.
I'd like to know why everyone thinks they need a heavy ass tire like that on a 4Runner.
My work truck weighs about 6400lbs with tools.
My Titan was 7100.

Those need a tire like that. A 4Runner doesn't.

It's your rig and your money, but I don't know why anyone thinks it's necessary.
If you're looking for a certain size/model tire and it only comes E rated, I'd find a different tire.

I agree with you, and that's why I stuck with a P-rated tire. That being said, I think most feel an LT tire is more durable for off-road usage and airing down. For the amount I spend on road vs off-road, I simply couldn't justify it though.

 

[Cymon]

Do you really think the 1/2” difference in clearance is worth going from a 265 c tire to a 275 e tire? This is the dumbest mod I see on these rigs. Stay stock or go to the 285 c for some actual gains in clearance or looks if thats your motivation. With the 275 you pay a weight, ride and performance penalty for no functional improvement.

Except if you run the OEM wheels you can likely get away without any rubbing throughout the entire range of articulation as opposed to a 285. I understand your point on clearance as it doesn’t make a whole lot of difference (unless it keeps a 1/4” gash out of your skids), but it does allow you to keep closer to stock clearance aired down. In terms of weight there is a big difference if you are going from a 265 P or SL, but as soon as you go 265LT (either c or e) then all of the weight difference between the 265 and 275 are within a few lbs.

Example: Cooper AT3
265 P 42lbs
265 C 47lbs
265 E 49lbs
275 C 51lbs
275 E 52lbs
285 E 55lbs

285 c are hard to find but the ridge grappler comes in 285 c and is 57lbs, just for arguments sake.

Also with 275 you get a little more width, which can help with traction especially aired down, and LT tires usually give you a few more mm of tread depth.

Really it comes down to what your intended uses are (maybe you are in the desert a lot and want the E-rated sidewall strength), what long term modifications are in the plans and what compromises a person is willing to make with their vehicle. In your opinion going to a 275 e tire might be the dumbest mod, but if you’re running stock height in places where you need the extra sidewall strength, air down often, and don’t feel like removing mud flaps or trimming your bumper it might not be that dumb of a choice.