Going Bigger - 5th Gen Tire Fitment Guide

[mo_mo]

Maybe I'm going cross-eyed from reading about 285s too much but some of the guides seem to contradict each other or even themselves.

The biggest one(though there's a few others) is the fitment chart reads the 285s as being in the yellow but THIS guide says



I'm new to the 5th gen T4R and I may lift in the future but at minimum it's off the table til next summer(if I only hadn't missed the TRD Pro suspension clearance). Wheels are a coin toss. I really like the look of the TEP/TRDOR wheels in black so I'm either going to coat mine or go with the FN FX Pros with the weight being on the former. The problem is tires are going to be a necessity before year's end and will likely pull that trigger before winter arrives. I'd love to go 285 KO2s on my '16 TEP but am worried about requiring a BMC or UCA rubbing after reading many reports and the contradicting info. I'd really hate to lift later and be stuck with 275s.

Ahhh...to gamble or not.

Here's my take.

Lift doesn't matter, as the suspension geometry is fixed based upon alignment. A lift might help you not rub during regular drive, but it won't help if you hit a bump... still no good and now your wheel is spinning at 65MPH!!!

Biggest things to make sure 285s fit:
Correct wheels (stick with the Trail wheel offset (+15mm) with no spacers)
Alignment: Maximize Caster (+4 degrees) with Toe and Camber with spec limits (pushes wheel forward away from body mount)
Front fender liner move / trim

Depending upon 'lift', you may have trouble hitting the +4 degrees caster, which is why some must go with new Upper Control Arms (UCAs). Somewhere around 2.5~3" or possibly more, UCAs seem to become needed, but this is just a SWAG as every vehicle is different.

 

[mrblah]

you guys that are rubbing with 32's, is due to the fact that you either are running close to zero or negative offset or running spacers.

If you are going to upgrade your rims to negative offset rims or running spacers, that chart may not work for you anymore.

 

[Spankez]

Running 17x9 3.50bs with 285/75/17’s. Will post pics when I’m able to.

 

[mrblah]

fitting 285's on a stock vehicle and with no lift is yellow on the fitment chart for a reason b/c every vehicle is different.

I was able to fit 285's on stock trail rims with no lift, just by pushing the front fender liner forward.

However, when i added wheel spacers, I started to rub on the body mount at full lock or in reverse, but it was okay for the most part when I took off the mudflaps.

Lifting it didn't solve my rubbing issues. Added aftermarket UCA's took care of my rubbing issues with stock trail rims and wheel spacers.

When I went to -12ish offset wheels, reintroduced a minor rub on the body mount w/ aftermarket UCA's at full lock and reverse. It wasn't bad/

When I went to -38ish offset wheels, I had to do a BMC. Thing is after I did a BMC and hammered the pinch weld, I could fit much larger tires in there if I wanted too.


So basically, if you want 285's I'd mount them and go from there. Just keep extra cash on hand just in case you need to make some modifications to your wheel well.

 

[555R]

16x8 on a 4runner

I’m curious if a 16x8 might fit a 2018 4 runner with kdss? I never checked when I got mine because I got home and swapped them out for my TE37X$
So the stickers have maybe 5 miles on them. Lol.
Just curious

 

[Asugm13]

I’m curious if a 16x8 might fit a 2018 4 runner with kdss? I never checked when I got mine because I got home and swapped them out for my TE37X$
So the stickers have maybe 5 miles on them. Lol.
Just curious

No, won’t clear the brakes.

 

[CalRnr]

Apologize if I'm asking a question that's already been answered on this thread.

I just got a 2018 TRD ORP and looking to go K02's. How bad is the rub with the 285's? So bad that I couldn't drive it home? Or pretty minimal and OK to drive it home from the shop and install the lift or make the mods within the next few weeks/month?

Likely going with the TRD Pro wheels at the same time.

Thanks for any thoughts or help!

 

[TerraCrawler]

Apologize if I'm asking a question that's already been answered on this thread.

I just got a 2018 TRD ORP and looking to go K02's. How bad is the rub with the 285's? So bad that I couldn't drive it home? Or pretty minimal and OK to drive it home from the shop and install the lift or make the mods within the next few weeks/month?

Likely going with the TRD Pro wheels at the same time.

Thanks for any thoughts or help!

Do you have a lift? With my King suspension rub is minimal, and I even have mud flaps on. I trimmed the flaps and there is no rub, literally just spent 10min doing it after install with a sharp knife.

Welcome to the 11mpg club, lol

 

[CalRnr]

Do you have a lift? With my King suspension rub is minimal, and I even have mud flaps on. I trimmed the flaps and there is no rub, literally just spent 10min doing it after install with a sharp knife.

Welcome to the 11mpg club, lol

Ha. Maybe I won't up the tire size... No lift yet. Weighing all the options. It's my daily driver, so going down to 11mpg doesn't sit too well. Was thinking about doing a Toytech Boss 3 inch lift, but there's a deal on tires here and thinking I'd get the 285 KO2's on the truck, then do the lift if it was generally drivable. But, if the rubbing would be crazy or dangerous, obviously would have to wait and do the tires after the lift. I've asked the question on a few other threads and haven't gotten a response. How many inches is the King lift?

 

[Jetboy]

Ha. Maybe I won't up the tire size... No lift yet. Weighing all the options. It's my daily driver, so going down to 11mpg doesn't sit too well. Was thinking about doing a Toytech Boss 3 inch lift, but there's a deal on tires here and thinking I'd get the 285 KO2's on the truck, then do the lift if it was generally drivable. But, if the rubbing would be crazy or dangerous, obviously would have to wait and do the tires after the lift. I've asked the question on a few other threads and haven't gotten a response. How many inches is the King lift?

The lift makes no difference in tire fitment. If it fits with a lift - it also fits at stock height. That's an inherent quality of IFS on the 4Runner. (Unless you're doing a bracket lift or a long travel lift).

 

[CalRnr]

The lift makes no difference in tire fitment. If it fits with a lift - it also fits at stock height. That's an inherent quality of IFS on the 4Runner. (Unless you're doing a bracket lift or a long travel lift).

Thanks! Any thoughts on how bad the rub would be driving a 2018 TRD ORP home from the tire shop with 285/70/17 KO2's on with no modifications?

Also wondering how bad it will effect MPG and anything else. Trying to decide if I go with the stock 265 or 285...

 

[mrblah]

Thanks! Any thoughts on how bad the rub would be driving a 2018 TRD ORP home from the tire shop with 285/70/17 KO2's on with no modifications?

Also wondering how bad it will effect MPG and anything else. Trying to decide if I go with the stock 265 or 285...

The drive home from the tire shop shouldn't be bad at all.....

As for the second part of your question.... If you go to 285's, your mileage will suffer, and you will get transmission gear hunting between 4th and 5th gear on the highway. While it isn't so bad that its annoying, but it happens enough that you will notice the transmission hunting. How much mpg will you lose, will depend on how heavy your new tire and wheel setup will be.

Even with all the negatives of 285s, I wouldn't give it up, although I would look into something other than E rated tires just to save some weight if you don't need the extra protections afforded by E rated tires.

 

[Aquabear]

Thanks! Any thoughts on how bad the rub would be driving a 2018 TRD ORP home from the tire shop with 285/70/17 KO2's on with no modifications?

Also wondering how bad it will effect MPG and anything else. Trying to decide if I go with the stock 265 or 285...

I have Nitto Terra Graps G2 just installed 285-70-17 w a Daystar lift 2.5/1.5. Mines a daily driver, hit the beach in summer, light offroad soon. Had 275 BFG AT prior and the ride is so much smoother w the Nitto's n since I'm more a daily driver on road I opted NOT to get Nitto's in LT285.

Not sure about the gas hit but since the tires are not as heavy as the BFG in 285 I'm still calculating(prob lighter than 275 too) I have a few engine mods to help with +MPG/+Power and I also don't suffer from Trans shifts as others do but you prob will.

You could probably get away without a lift but no guarantees. Check the spreadsheet, I believe it shows yellow that installing 285 w/o lift is 50/50 chance on no issues.

At last minute I had the Daystar spacers installed because I wasn't ready to pull the trigger on a full Toytec Ultimate lift but wanted no issues and I needed tires ASAP.

Good luck!!! Let us know

 

[Jetboy]

Thanks! Any thoughts on how bad the rub would be driving a 2018 TRD ORP home from the tire shop with 285/70/17 KO2's on with no modifications?

Also wondering how bad it will effect MPG and anything else. Trying to decide if I go with the stock 265 or 285...

It will almost certainly rub on the front inner bumper area that is normally cut away for clearance on larger tires. It makes a lot of noise - but probably doesn't hurt anything for a short distance. They will not have any contact going straight. It's only when you turn near full steering lock.

The other rub point is the front mud flap. I removed my front flaps. I first heated and re-molded to sit closer to the fender liner, but then ended up removing them when I went up to 285/75 because they still rubbed some. I'm sure you could drive home just fine. Like the front rub - they only rub at full steering lock.

For ease of use - if you just un screw and remove the front mud flaps - you should have no problem driving it other than rub noise when turned a lot. The front bumper cover clearance is just a matter of using a razor knife to cut some plastic from the under side and then re-screwing in the fender liner a little further forward.

If you don't need 285's for offroad use the stock size is nicer for daily driving. The gearing is right and they're lighter weight.

 

[CalRnr]

I have Nitto Terra Graps G2 just installed 285-70-17 w a Daystar lift 2.5/1.5. Mines a daily driver, hit the beach in summer, light offroad soon. Had 275 BFG AT prior and the ride is so much smoother w the Nitto's n since I'm more a daily driver on road I opted NOT to get Nitto's in LT285.

Not sure about the gas hit but since the tires are not as heavy as the BFG in 285 I'm still calculating(prob lighter than 275 too) I have a few engine mods to help with +MPG/+Power and I also don't suffer from Trans shifts as others do but you prob will.

You could probably get away without a lift but no guarantees. Check the spreadsheet, I believe it shows yellow that installing 285 w/o lift is 50/50 chance on no issues.

At last minute I had the Daystar spacers installed because I wasn't ready to pull the trigger on a full Toytec Ultimate lift but wanted no issues and I needed tires ASAP.

Good luck!!! Let us know

Thanks! I've been agonizing over this tire decision because I don't want to have to buy tires twice... Seems like a lot of people go 265, then fairly quickly realize they want 285's. Would you say the Nittos are quieter than the KO2's? I've also been looking at the G2's and the Ridge Grapplers.

 

[2016 4Runner SR5]

Anyone running a 285 or 295/70/17 on a 17x9 wheel with 4.53 BS and -12 offset? If so please post up pictures. Wanting to see how they look before I order wheels.

 

[cmxiii]

It seems most people encounter rubbing with 285/70/17 or larger tires. Has anyone experienced rubbing with 265/70/17s after lift on a 5th gen? Mine is rubbing on mudflap with stock size BFG KO2? 2" lift all around.

Thanks in advance!

 

[479NWA5thGEN]

It seems most people encounter rubbing with 285/70/17 or larger tires. Has anyone experienced rubbing with 265/70/17s after lift on a 5th gen? Mine is rubbing on mudflap with stock size BFG KO2? 2" lift all around.

Thanks in advance!

When I switched to my 17x9 -12 wheels I started rubbing after my lift. I went 1.75" up front and 1" rear. Just had to trim the front fender liner and no issues. This is with the stock Dunflops as well.

 

[B Muss]

It seems most people encounter rubbing with 285/70/17 or larger tires. Has anyone experienced rubbing with 265/70/17s after lift on a 5th gen? Mine is rubbing on mudflap with stock size BFG KO2? 2" lift all around.

Thanks in advance!

Have 275/70/17 ko2s with toytec 3” and no rubbing issues at all.

 

[cmxiii]

Thanks guys. I'm on the factory TRD PRO wheels and encountered no rubbing issues with stock suspension. After lift, started to rub on mudflap. Trying to figure out why since i never encountered any issues like this with my previous lifted vehicles. I'm thinking the after market UCAs may be the issue but not quite sure.