Going larger then a 285/70/17

Hybryd40

Hybryd40

New member
Okay,
I will be up for some new tires soon and am really wanting to bump up in size. Getting kind of bored with the 285/70/17 I have on there now.

Looking at: 285/75/17 33.8 height 11.2 width
295/70/17 33.3 height 11.6 width
305/70/17 33.8 height 12.0 width

I have a good 3inch lift with 1inch body-lift and SPC upper control arms and BMC I run 17x9 Fuel wheels with -12 4.5 BS

I am aware that some people change gears and some dont and thats okay. Some will tell you when you go to a 285/70/17 that you should regear. My truck drives fine. Most of us know the cost of a gear swap is not cheap. But I did price them and if I need them I will put them in.

My questions to anyone that has had experience with this upgrade. What tire is more likely to fit with the least amount of headaches. Dont really want to use BFH if I dont need to. Do you still or did you ever run with stock gears.

I personally,at the moment am looking at running the 295/70/17 as first choice and 285/75/17 as the other followed by the 305/70/17

I have received some good info from a couple of members on here already. But I am still open to some other opinions.

Thank you in advance for any positive input that you may have
 
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I'm running 35's on my 2019 4runner TRD Offroad Premium non-kdss, with stock gears. I also live west of denver, right along the Rockies at about 6,150 elevation. My rig runs fine, but I plan on a regear this winter, mainly to help with the speedo/mileage correction. I also tow a 17' travel trailer that's 4,500lbs loaded. I can still run it 68mph up the initial climb into the Rockies on I-70 while towing the travel trailer.

I tried the front bumper a little and have no rubbing anymore. Wouldn't need to trim at all woth a high clearence front bumper. The rear I rolled the pinch weld on the fender that's under the weather striping for the door. I do get a little run if doing high speed, big bumps that stuff the tire all the way up but it's very very little now.
 

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Silent D said:
I'm running 35's on my 2019 4runner TRD Offroad Premium non-kdss, with stock gears. I also live west of denver, right along the Rockies at about 6,150 elevation. My rig runs fine, but I plan on a regear this winter, mainly to help with the speedo/mileage correction. I also tow a 17' travel trailer that's 4,500lbs loaded. I can still run it 68mph up the initial climb into the Rockies on I-70 while towing the travel trailer.

I tried the front bumper a little and have no rubbing anymore. Wouldn't need to trim at all woth a high clearence front bumper. The rear I rolled the pinch weld on the fender that's under the weather striping for the door. I do get a little run if doing high speed, big bumps that stuff the tire all the way up but it's very very little now.
Click to expand...

FWIW - I don't think re-gear will help with the speedo. It's taken from the ABS sensors IIRC. So it's downstream of all of the gearing. Not really a great solution other than a 4 channel speedometer healer type setup. But I'd think gearing would help with 35's as far as driveability.
 
83Mule said:
I would go 285/75/17.......you want diameter without width.
Click to expand...

I'll second this. With the right alignment set, I'm pretty sure even a 35x10.5x17 would fit with a BMC and proper wheel offset. I was looking to go to that size next if I keep the 4Runner.
 
Back when I had my 4th gen I went from 285/70/17 Nitto Terra Grapplers to 295/70/17 Nitto Trail Grapplers and immediately noticed a significant difference. The truck downshifted much more frequently on the highway and struggled to stay in 5th at any speed higher than 75mph. I realize the 5th gens have a little more horsepower, but if I had to do it all over again I would probably go with a 285/75/17.
 
I’d keep it skinny to minimize rubbing. I cruise on the freeway in 4th with stock gears and 35’s. Thirty-fours may get by but anything taller you’ll want to regear. I’ve got 4.88’s going in Monday.
 
Silent D said:
I'm running 35's on my 2019 4runner TRD Offroad Premium non-kdss, with stock gears. I also live west of denver, right along the Rockies at about 6,150 elevation. My rig runs fine, but I plan on a regear this winter, mainly to help with the speedo/mileage correction. I also tow a 17' travel trailer that's 4,500lbs loaded. I can still run it 68mph up the initial climb into the Rockies on I-70 while towing the travel trailer.

I tried the front bumper a little and have no rubbing anymore. Wouldn't need to trim at all woth a high clearence front bumper. The rear I rolled the pinch weld on the fender that's under the weather striping for the door. I do get a little run if doing high speed, big bumps that stuff the tire all the way up but it's very very little now.
Click to expand...

I have 285/70's, I have trimmed the front, removed the mud flaps, have UCAs, and do not have an inch to spare. I cannot understand how your 35's are not rubbing. They do look good!
 
Last edited:
Hybryd40 said:
Okay,
I will be up for some new tires soon and am really wanting to bump up in size. Getting kind of bored with the 285/70/17 I have on there now.

Looking at: 285/75/17 33.8 height 11.2 width
295/70/17 33.3 height 11.6 width
305/70/17 33.8 height 12.0 width

I have a good 3inch lift with 1inch body-lift and SPC upper control arms and BMC I run 17x9 Fuel wheels with -12 4.5 BS

I am aware that some people change gears and some dont and thats okay. Some will tell you when you go to a 285/70/17 that you should regear. My truck drives fine. Most of us know the cost of a gear swap is not cheap. But I did price them and if I need them I will put them in.

My questions to anyone that has had experience with this upgrade. What tire is more likely to fit with the least amount of headaches. Dont really want to use BFH if I dont need to. Do you still or did you ever run with stock gears.

I personally,at the moment am looking at running the 295/70/17 as first choice and 285/75/17 as the other followed by the 305/70/17

I have received some good info from a couple of members on here already. But I am still open to some other opinions.

Thank you in advance for any positive input that you may have
Click to expand...

I agree with the others who said 285/75. I've run them for years and think it's a great size. You'll have to see how you feel about the gearing after you go up in size. Maybe you'll be ok. Maybe not. If you do decide to do your gears I recommend East Coast Gear Supply.
I've also run 305/70's and you will definitely need the hammer, probably 5* of caster and some serious fender liner manipulation. That being said it is possible to get them not to rub at full stuff.
 
comtn4x4 said:
I agree with the others who said 285/75. I've run them for years and think it's a great size. You'll have to see how you feel about the gearing after you go up in size. Maybe you'll be ok. Maybe not. If you do decide to do your gears I recommend East Coast Gear Supply.
I've also run 305/70's and you will definitely need the hammer, probably 5* of caster and some serious fender liner manipulation. That being said it is possible to get them not to rub at full stuff.
Click to expand...

I've been eyeying 285/75s too but not many make them in that size. Regrettably, Falken only makes AT3Ws in that size. There is also the Yokohama geolanders which I may be interested in. Thought about KM3s but BFG always runs small...and expensive soooo yea. Hopefully Cooper will release a Evolution MT in that size.

Will have to wait till I get a rear bumper to carry the spare though...Unless I can hammer up the spare well.
 
in the perfect world I would think a 255 80 17 OR 255 85 17 in a C rating would be perfect but they are all E. but the E will give you that thick thread depth. I'm not going to lie 285 70 is getting old on me as well, I'm looking to swap next year with some lighter wheels to make up for the weight in tire difference and maybe less rim width. ideally 285 85 17 in E thick thread is sufficient and would look pretty stuff with 4 inch of lift. are you looking to add more lift with a tad taller tires or going for a wider stance?
 
SpeedyKevin said:
I've been eyeying 285/75s too but not many make them in that size. Regrettably, Falken only makes AT3Ws in that size. There is also the Yokohama geolanders which I may be interested in. Thought about KM3s but BFG always runs small...and expensive soooo yea. Hopefully Cooper will release a Evolution MT in that size.

Will have to wait till I get a rear bumper to carry the spare though...Unless I can hammer up the spare well.
Click to expand...


Yeah the spare tire is an issue. I haven't seen anyone stuff a 285/75 underneath yet but maybe it's a possibility. I had a 285/70 as a spare for about a year while on 285/75's. The couple times I needed to use the spare it didn't cause a problem getting off the trail. However, long distance on road isn't the best.


As far AT or MT tires that are available in 285/75 here's a off the top of my head not very comprehensive list: (I probably missing the ones I didn't consider)

Cooper: St Maxx, AT3 XLT
BFG: KO2, KM2, KM3
Nitto: Dura Grappler, Terra Grappler, Ridge Grappler, Trail Grappler
Toyo: Open Country A/T 2 and 3, Open Country R/T and M/T
Falken A/T3W
Yokohama Geoloander A/T
 
Akkording said:
in the perfect world I would think a 255 80 17 OR 255 85 17 in a C rating would be perfect but they are all E. but the E will give you that thick thread depth. I'm not going to lie 285 70 is getting old on me as well, I'm looking to swap next year with some lighter wheels to make up for the weight in tire difference and maybe less rim width. ideally 285 85 17 in E thick thread is sufficient and would look pretty stuff with 4 inch of lift. are you looking to add more lift with a tad taller tires or going for a wider stance?
Click to expand...


The Nitto Ridge Grappler and Toyo A/T 3 are available in 285/75 C
 
Thanks guys for all of your input. As of right now it looks like I may be stepping up to the 285/75/17 in a C load. That is what I have now in a 285/70/17 C
 
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