265/70-->285/70 Lose power off the line?

[zzdocxx]

Hi everyone, another dumb noob question.

Something I read here jogged my memory about when I put bigger tires on my S-10 Blazer ~30 years ago. I really lost significant power accelerating from a stop.

1. So I am wondering about our experience with going from 265/70 to 285/70, do you feel it much?

2. Thinking about putting in one of those "Sprint Booster" devices in and also wondering if that would mitigate.

3. Third question then, how do the 275/70 look with a 3" lift? But then there aren't as many 275s to choose from vs. 285, right?

Thanks, you guys are great !

:high5:

 

[Bayou_Pro]

You haven't really lost any power but instead you have have increased the rotating weight and lost effective gear ratio. So yes it will feel much slower and like you have lost power.

The boosters just change the sensitivity of the pedal, basically just remapping the accel pedal curve. You gain zero power.

 

[mrblah]

Hi everyone, another dumb noob question.

Something I read here jogged my memory about when I put bigger tires on my S-10 Blazer ~30 years ago. I really lost significant power accelerating from a stop.

1. So I am wondering about our experience with going from 265/70 to 285/70, do you feel it much?

2. Thinking about putting in one of those "Sprint Booster" devices in and also wondering if that would mitigate.

3. Third question then, how do the 275/70 look with a 3" lift? But then there aren't as many 275s to choose from vs. 285, right?

Thanks, you guys are great !

:high5:

Wanted to add to what Bayou said. The spring booster will help you regain some acceleration at the expense of your MPG. Basically, the SB acts as your right foot mashing the throttle faster than you can do it.

I love my SB, but realize there is no free lunch.

I think if you are going to a 3 inch lift, 275's would be the smallest I would go aesthetically, but that size is a happy compromise in performance. Just don't get a E load tire if you are worried about acceleration and MPG. There are tons of 275's, and 285's to choose from.

 

[Peadog]

It's not a race car, it was made for off roading. I personally didn't think the difference was much at all. I guess I reached that age where I'm not in a big hurry.

 

[zzdocxx]

Yes, that's the thing. What I would really like is to get another vehicle as a daily driver, then it wouldn't matter so much, and, I would save miles on my 4R, which I am going to keep forever. :usa2::cheers::llama:

 

[03_4x4Runner]

I switch from my stock 20" tires to my 275 KO2 tires several times a year. There definitely is a difference. I notice the power difference the most when I put the stock lighter 20's back on. It just feels livelier. Also I gain 1.5 mpg. 285s would make the power lose and mpg slightly worse.

 

[zzdocxx]

I switch from my stock 20" tires to my 275 KO2 tires several times a year. There definitely is a difference. I notice the power difference the most when I put the stock lighter 20's back on. It just feels livelier. Also I gain 1.5 mpg. 285s would make the power lose and mpg slightly worse.

Thanks for this, it would be great to have a place to keep an extra set of tires around but don't currently.

Do you actually change the tires to the same rims, or are the extra tires mounted on their own wheels ?

:car::driving:

 

[MrGainzz]

Try 255/75/17 c load if you want “bigger” tires without sacrificing power and mpg.


Sent from my iPhone using Tapatalk

 

[Blue109]

2. Thinking about putting in one of those "Sprint Booster" devices in and also wondering if that would mitigate.

There is a pedal commander group buy going on until tomorrow afternoon. $220 now. $200 if he gets 25 orders. Not sure where its at but it should be close.
***Pedal Commanders***

 

[03_4x4Runner]

Thanks for this, it would be great to have a place to keep an extra set of tires around but don't currently.

Do you actually change the tires to the same rims, or are the extra tires mounted on their own wheels ?

:car::driving:

I have 2 set of wheels and tires, the stock 20" and 275/70/17 BFG KO2 tires.
I would not do this again. To much of a pain. I was just trying to use up the stock tires before they dry rot. I will tell you that nothing runs quieter or smoother than a stock tire but they are useless off road.

 

[borfoo3]

Hi everyone, another dumb noob question.

Something I read here jogged my memory about when I put bigger tires on my S-10 Blazer ~30 years ago. I really lost significant power accelerating from a stop.

1. So I am wondering about our experience with going from 265/70 to 285/70, do you feel it much?

2. Thinking about putting in one of those "Sprint Booster" devices in and also wondering if that would mitigate.

3. Third question then, how do the 275/70 look with a 3" lift? But then there aren't as many 275s to choose from vs. 285, right?

Thanks, you guys are great !

:high5:

answers:
1. Yes its a big difference. Sluggish is the word.
2. Helps improve pedal to response feeling.. power is the same
3. I'm now on 275 BFG KO2 vs previous 285 Cooper AT3 on a KING ~3" lift.. 275s are the smallest I'd put on.. 285s look right on the money. 275s are harder to find

 

[zzdocxx]

answers:
1. Yes its a big difference. Sluggish is the word.
2. Helps improve pedal to response feeling.. power is the same
3. I'm now on 275 BFG KO2 vs previous 285 Cooper AT3 on a KING ~3" lift.. 275s are the smallest I'd put on.. 285s look right on the money. 275s are harder to find

You went to the 275 due to the sluggishness issue ?

Thanks !

 

[BobsTrail]

answers:

3. I'm now on 275 BFG KO2 vs previous 285 Cooper AT3 on a KING ~3" lift.. 275s are the smallest I'd put on.. 285s look right on the money.

:iagree:
285s with a lift just look right on a lifted T4

 

[Akkording]

There is a pedal commander group buy going on until tomorrow afternoon. $220 now. $200 if he gets 25 orders. Not sure where its at but it should be close.
***Pedal Commanders***

Thank you for this, I made the list

 

[jhguth]

you could mitigate by reducing the net weight increase of the larger tires by getting lighter rims

the sprint booster won't make a difference, it just adjusts throttle response it doesn't add power

 

[mteolus]

This isn't exact as the wheels are different and it is a Jeep not a 4Runner, but this might give you an idea. Not terribly slower but yes, slower. And one other thing not mentioned is the slight difference in height will cause some slightly increased wind resistance which obviously will affect the 1/4 mile but not initial acceleration.

YouTube

 

[4runnin4mylife]

In my opinion it depends more on weight of the tire, so check load ratings! For example, BFG 275 is E Load and weighs more that the BFG 285 C Load. I moved from the 275 to the 285 BFG's and I felt more pep from a dead stop. This was without a doubt noticed even though i went up a size the weight decreased per tire. Now the mileage hit isn't so bad in the stop and go, yet my overall MPG has decreased slightly due to the wider rims and the tire contact patch on the road as i drive highway miles to work each day.

I understand the weight is further out on a larger tire, circumference, and all the other inputs into a vehicle getting the tires to move from a dead stop, but I would look more at the weight and not the size tire is my advice!

 

[Chris Walker]

When I see a tire to tire comparison of a true off road 265 and a 285 the difference doesnt seem to offset the cost/impact (in my personal opinion).

I realize Im not a special snow flake and everyone has different requirements but I cant help but feel the vast majority of peoples usage wouldnt be sufficient with a 2inch lift and a quality set of 265s. This combination would seem to maximize the performance required for a substantial portion of the population usage while reducing the impact for daily driving...

Its hard to justify putting a 285 on a 4runner for me personally. I would end up with a gear change, a super charger and hacking away at the body to run a 285 under operating levels that would be acceptable to me. I am not OK with stomping on the gas and having the truck search for gears or simply not react at all. I would rather dump 10k into an older built truck and not worry about trashing it or bouncing it off of the rocks. Thats just me, however....again I know everyone has different requirements so it isnt meant to incite the group that are rolling on 285s.

 

[mteolus]

When I see a tire to tire comparison of a true off road 265 and a 285 the difference doesnt seem to offset the cost/impact (in my personal opinion).

I realize Im not a special snow flake and everyone has different requirements but I cant help but feel the vast majority of peoples usage wouldnt be sufficient with a 2inch lift and a quality set of 265s. This combination would seem to maximize the performance required for a substantial portion of the population usage while reducing the impact for daily driving...

Its hard to justify putting a 285 on a 4runner for me personally. I would end up with a gear change, a super charger and hacking away at the body to run a 285 under the conditions that would be acceptable to me....and what have I gained? I've dumped 10k into a 50k vehicle. I would rather dump 10k into an older built truck and not worry about trashing it or bouncing it off of the rocks. Thats just me, however....again I know everyone has different requirements.

Very true, but it was quite noticeable to me going from 265 to 285 off-road. Tires rolled over bigger objects much easier.

 

[Akkording]

Yeah a lighter set of FN wheels can put you 8# to 9# pounds lighter than stock wheels