Going Bigger - 5th Gen Tire Fitment Guide

[szuyung3000]

Hey folks, FNG here with a question that has probably been answered plenty. I've spent quite a bit of time searching the forums, reading blogs, asking friends and still haven't gotten the amount of information I need so I'm just gonna be THAT new guy and ask:

I've got a stock T4R TRD OR. I've got some money set aside for the first modification, and it seems that getting rid of the stock H/T tires will be the best bang for the buck. I know that 285/70 17 can be fit to my stock suspension with some minor trimming to prevent rubbing on road, but I'm trying to figure out what it will do to the off road capabilities.

Obviously running bigger tires has pros and cons, and 285/70 is where I would like to end up so I'd rather just fit them now rather than buy a set of smaller A/T and then resize once I get a lift. Buying the final size once will save a nice chunk of change. But I'm worried that once I fit larger tires under the stock suspension I'll have compromised some of the flex in the suspension.

Can anyone advise how well 285/70 17s work off road on stock suspension? Will I be constantly jamming tires into things when the road gets bumpy? Will I have ruined my articulation? I just don't have the cash now to do both tires and lift, but I know the stock tires will hold the 4R back until they're swapped out.

Thanks, and again sorry for the typical new guy post. I looked, I promise! :sorry:

You will most likely rub a lot if you run 285/70R17 on stock suspension.

 

[szuyung3000]

using my common sense. Yes. It can.

 

[szuyung3000]

Can anyone tell me what the largest sized tires I can use on TRD Pro factory wheels?

I would say bigger 33" tires almost to 34" the biggest. No 34" or bigger. Always check tire manufacturer's specs.

 

[szuyung3000]

what suspension lift you have?

 

[2016 4Runner SR5]

Hey folks, FNG here with a question that has probably been answered plenty. I've spent quite a bit of time searching the forums, reading blogs, asking friends and still haven't gotten the amount of information I need so I'm just gonna be THAT new guy and ask:

I've got a stock T4R TRD OR. I've got some money set aside for the first modification, and it seems that getting rid of the stock H/T tires will be the best bang for the buck. I know that 285/70 17 can be fit to my stock suspension with some minor trimming to prevent rubbing on road, but I'm trying to figure out what it will do to the off road capabilities.

Obviously running bigger tires has pros and cons, and 285/70 is where I would like to end up so I'd rather just fit them now rather than buy a set of smaller A/T and then resize once I get a lift. Buying the final size once will save a nice chunk of change. But I'm worried that once I fit larger tires under the stock suspension I'll have compromised some of the flex in the suspension.

Can anyone advise how well 285/70 17s work off road on stock suspension? Will I be constantly jamming tires into things when the road gets bumpy? Will I have ruined my articulation? I just don't have the cash now to do both tires and lift, but I know the stock tires will hold the 4R back until they're swapped out.

Thanks, and again sorry for the typical new guy post. I looked, I promise! :sorry:

It rubs on the street. Zero chance of you being able to take it off road. You'll literally rub everything. You'll likely end up with damaged fenders and sliced tires.

 

[tonynf89]

Hey guys, quick one for you.

I have a 2010 4Runner Trail Edition.

Currently looking at some 17x8 aftermarket rims. They have a hub bore of 106.1 mm. Most sites tell me my 4Runner 106.2mm center bore.

Is this a cause for concern? I'm in Canada and using 1010tires and they provided these rims as an option. Will they fit right on, or will I need hub spacers, or will they not fit at all?

The rims;

Fast HD Menace Gunmetal Wheel | 1010Tires.com Online Wheel and Tire Store Black, 17x8 (15 6/135, 6/139.7) Offset

 

[Omegat4r]

I have a 2018 SR5 on stock suspension with TRD pro wheels and 275/70R/17 BFG K02s with no rubbing issues, and want to switch to these Vemon Rex VR-602 wheels 17" X 9" ET -12

VR-602 Coal Black - Venomrex

I want to make sure these will fit or if not what I will need to do for them to fit. I'd like to keep my 275/70R/17 K02s and not move up to 285s if that will work? So I guess my question is will these wheels fit 275s safely and will this wheels fit my SR5 on stock suspension without rubbing, and if not what will I have to do to get these to work? Thanks

 

[2016 4Runner SR5]

I have a 2018 SR5 on stock suspension with TRD pro wheels and 275/70R/17 BFG K02s with no rubbing issues, and want to switch to these Vemon Rex VR-602 wheels 17" X 9" ET -12

VR-602 Coal Black - Venomrex

I want to make sure these will fit or if not what I will need to do for them to fit. I'd like to keep my 275/70R/17 K02s and not move up to 285s if that will work? So I guess my question is will these wheels fit 275s safely and will this wheels fit my SR5 on stock suspension without rubbing, and if not what will I have to do to get these to work? Thanks

Almost definitely going to rub and require a body mount chop if not more. You will also likely over stretch your tires. Not a very good idea for more than a few reasons.

 

[83Mule]

They will rub......you can get them to work if they are 4.5'' backspacing and -12 as I run the same spec rim in a Mamba 14 with 275's in the past. You may not need a BMC but will rub the mudflaps until you trim them. With a 2.5 lift and some UCA's you can run them with little trimming. From my experience, I would go with a 8 or 8.5 inch wide rim with up to 285's. 275's will fit the 9's but the wear is funky with the straight sidewall.

 

[Grunt77]

I have a 2011 SR5 with a Toytech BOSS lift and SPC control arms. I planned on going with 285/70r17 tires and ordered the Relations Race wheels in 8’5” with -12 offset. Was the -12 offset a mistake? I’m not afraid to do a BMC, but I may be able to change my order since they haven’t shipped yet

 

[delloro]

I have a 2011 SR5 with a Toytech BOSS lift and SPC control arms. I planned on going with 285/70r17 tires and ordered the Relations Race wheels in 8’5” with -12 offset. Was the -12 offset a mistake? I’m not afraid to do a BMC, but I may be able to change my order since they haven’t shipped yet

I also ordered RRW wheels with -12mm offset, I did it for JBA UCA clearance. You probably did not need to, but the difference is less than half an inch. Unlikely that little bit is the difference between a BMC or not, but it could be.

I would have gone with 0 offset if it was an option for me, but it was not.

 

[TRDHULK]

Are 34's really impossible???

I ran across this video on YouTube about a guy fitting 34's on his 5th Gen.

He has TRD Pro suspension with spacer lift kit, aftermarket UCA's, and I think that's it. Looks like he will have to do a VERY minor trim to the front bumper, but he doesn't even have a BMC and he fit 34's without any issue.

Anyone have any input on this?

This guy is very long winded, so skip to 4:00 to get to the fitment.


<iframe width="560" height="315" src="https://www.youtube.com/embed/aesRtk2aoGY" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

 

[2016 4Runner SR5]

I ran across this video on YouTube about a guy fitting 34's on his 5th Gen.

He has TRD Pro suspension with spacer lift kit, aftermarket UCA's, and I think that's it. Looks like he will have to do a VERY minor trim to the front bumper, but he doesn't even have a BMC and he fit 34's without any issue.

Anyone have any input on this?

This guy is very long winded, so skip to 4:00 to get to the fitment.


<iframe width="560" height="315" src="https://www.youtube.com/embed/aesRtk2aoGY" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

I run a 295/70/17 on 2.5 front 2” rear and no BMC with no rubbing. It’s all about choosing the proper wheels.

 

[comtn4x4]

I ran across this video on YouTube about a guy fitting 34's on his 5th Gen.

He has TRD Pro suspension with spacer lift kit, aftermarket UCA's, and I think that's it. Looks like he will have to do a VERY minor trim to the front bumper, but he doesn't even have a BMC and he fit 34's without any issue.

Anyone have any input on this?

This guy is very long winded, so skip to 4:00 to get to the fitment.


<iframe width="560" height="315" src="https://www.youtube.com/embed/aesRtk2aoGY" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

He doesn't exactly say it doesn't rub and didn't have issues. He'll be trimming more once he gets it off road.

I've run a couple sets/brands of 285/75's (Most are not a true 34 btw.)
And you need the following to be sure it won't rub: BMC, trim the fender liner, caster at 4* which requires UCA's, wheel offset will play a big factor in this too. (I didn't hear mention of how much caster he was running). Re gearing is subjective. I re geared mine and am very happy I did however it's not necessary.

Bottom line if you want 34's you need some cutting/trimming unless your rig is a pavement princess and you don't mind a bit of rubbing. It's far easier to stay on 285/70's and the gain going to 34's is negligible

 

[efillion]

I have a question that more of an engineering question.

If you lift up your vehicle to fit 32.7" tires but could not fit them before the lift due to clearance issues with fenders/body mount, how's the lift make it so it fits? would the tires still not rub under full compression while at turning lock? Does lifting it just change the range of travel of the IFS?

from my understanding, the upper control arm limits the suspension droop. If you lift it, you reduce the amount of droop as you are forcing the suspension downward (unless you change the upper control arms), but then do you also decrease upward travel? If this is the case, would the (guesstimate) 10" of total wheel articulation be reduced due to the lift as it would limit upward travel by pushing the range downward to stop the tires from rubbing on the BMC/Fenders? Then this in turn is affected by the upper control arm binding?

The type of off-roading that I do is very tame. washed out fire roads, across fields, some ditch crossing, encountering mud, snow covered unplowed roads (got hung up this winter more times than I'd care to share). Looking for more clearance but trying to not lessen the articulation for washed out fire roads and ditch crossing. Also trying to get better approach and departure angles. looking at 2.5/1.5 or 2/1 mild lift for 32.7" tires.
2016 Limited with stock suspension, 265/70r17's at the moment.

 

[Jeff_DML]

I have a question that more of an engineering question.

If you lift up your vehicle to fit 32.7" tires but could not fit them before the lift due to clearance issues with fenders/body mount, how's the lift make it so it fits? would the tires still not rub under full compression while at turning lock? ....

yes that is my understanding, lifting will not help tire clearance under full compression if you are doing it by increasing travel. I would expect using spacers would help since that keeps the same travel .

 

[2016 4Runner SR5]

Install the appropriate bump stops if you’re concerned about clearance at full compression.

 

[Jetboy]

I have a question that more of an engineering question.

If you lift up your vehicle to fit 32.7" tires but could not fit them before the lift due to clearance issues with fenders/body mount, how's the lift make it so it fits? would the tires still not rub under full compression while at turning lock? Does lifting it just change the range of travel of the IFS?

from my understanding, the upper control arm limits the suspension droop. If you lift it, you reduce the amount of droop as you are forcing the suspension downward (unless you change the upper control arms), but then do you also decrease upward travel? If this is the case, would the (guesstimate) 10" of total wheel articulation be reduced due to the lift as it would limit upward travel by pushing the range downward to stop the tires from rubbing on the BMC/Fenders? Then this in turn is affected by the upper control arm binding?

The type of off-roading that I do is very tame. washed out fire roads, across fields, some ditch crossing, encountering mud, snow covered unplowed roads (got hung up this winter more times than I'd care to share). Looking for more clearance but trying to not lessen the articulation for washed out fire roads and ditch crossing. Also trying to get better approach and departure angles. looking at 2.5/1.5 or 2/1 mild lift for 32.7" tires.
2016 Limited with stock suspension, 265/70r17's at the moment.

The answer is that with IFS - the lift makes no difference in tire clearance unless you modify your bump stops and reduce travel. There is a minor difference in alignment setting of the LCA tabs at different lift height. Assuming you're maxing out your caster - lift makes no difference unless you never flex the suspension. Every tire that fits with a 3" lift also fits with no lift. You can try it if you are curious and have adjustable height shocks. I have 34's and have run with every level of lift from 1" (lowest I can adjust) to 3". It's the same at any setting. And I did need a BMC. It wasn't even close to fitting for me. 32.7 and 33.0" tires (275/60/20) both fit nicely without a BMC. 285/75/17's did not.

 

[DryHeatAZ]

I run a 295/70/17 on 2.5 front 2” rear and no BMC with no rubbing. It’s all about choosing the proper wheels.

What is the width/offset of your FX Pro wheels?

 

[2016 4Runner SR5]

What is the width/offset of your FX Pro wheels?

17x8 4.5” backspacing 0 offset