37s in stock suspension

Here’s my stock suspension Tundra with stock 20” wheels and 37s. No rub. I did a lot of research and many people said it couldn’t be done. The truck drives as smooth as any stock tundra without compromising COG and droop travel.

You can follow me on IG @longborghini_wynn since I don’t post much here.

 

Looks right! What's your wheel offset?

 

stock +60 offset and 1.25” spacers

 

Not trying to sound like a debbi downer but you change the game once you go to 37's. If you wheel at all expect issues with ball joints control arms axle shafts etc. Truck looks great!

 

Wouldn’t recommend 20” wheels for off-road either…

 

Killer looking rig! Funny how people think you need a lift to run larger tires (I used to as well). If you actually use all your suspension travel, at some point in the range of motion your suspension will effectively be at stock ride height. If your tires don't fit at stock height, then they won't fit when your lifted suspension is compressed either.

 

THIS EXACTLY!!! A lifted truck isn’t desirable for many reasons. You want to fit the biggest tire with as low COG as possible. You start compromising a lot when you deviate away from the stock geometry.

 

Ideally 17”. But realistically, I’m mall crawling 70% of the time. And when I do off road, I’m not going King of Hammers, I’m on fire roads and mild obstacles. Key is to know your limits of your equipment, if I wanted a crawler I wouldn’t buy a tundra.

 

Good opportunity to upgrade as those weak points come up!

 

Can't disagree with you! Having said that, I do think there is a happy medium between gaining ground clearance and wheel travel with aftermarket coilovers without pushing it to the point where CV angle is compromised. It's like anything else in life, a little give and take.

 

When a lift is needed, I’d take inspiration from the TRD-PRO, which is a mild 2” lift. Toyota probably have done a lot of research into the longevity of components at this height.

 

So you don't need to extend the bump stops or anything to keep the 37's from eating the tops of the fenders/wheel wells when you stuff them?

I know on the 200 series Land Cruisers, they cannot run 37's without extended bump stops and/or cutting fenders or running a bodylift to gain more clearance above the tire. The extra 2.5-3" of tire radius puts the 37's into the tops of the wheel wells.

Also, are these a full 37x12.5 or are the skinnies. I know there are 37x11.5's out there now.

 

That would be my main concern. I've had many a lowered vehicle's tire chew into the fender or liner because of the same premise.

 

Maybe at some point I’ll do the “auto fender delete mod”, but right now, I plan on using larger bump stops to increase the effective spring rate and decrease the likelihood of the wheel hitting the liners on hard bounces.

Tire is 12.5” width. I would’ve used 11.5” if it was available from cheaper brands, but only Toyo makes them right now.

 

It it were me, I would run the extended bump stops and maybe do a small spacer on the coilover to regain some of that lost travel.

The TRD Pro trucks usually come with longer travel shocks comparable to the aftermarket extended travel coilovers so I think that Toyota feels the extra droop travel is fine for the CV's.

 

Looks great! Are you able to run OEM wheel locks with the 1.25" spacers? I know some of the Land Cruisers and Tacoma have had issues with them.

 

When I added the Fox TRD Pro shocks, I gained exactly 1.5".

 

Not to derail this thread , but I like that gloss black grille! I was thinking of doing that on my MGM Tundra. Nice ride!

 

So what are all the things you had to do to run the 37s? Any cutting, specific parts replaced, mods? Have you checked for rubbing at full compression and wheels turned lock to lock?

ive got some falken RT01s that im gonna be putting on at the end of the month along with a suspension upgrade, regear, lockers, etc. stellar built here in sacramento will be doing the work for me. They are very skeptical of fitting the 37s without doing a body mount relocation but ive seen so many people do it without even a body mount chop or anything. And theres even an article from coastal offroad that is specifically about fitting 37s at any ride height. I dont doubt their abilities or experience but im sure they dont do a lot of tundras on 37s because it doesnt seem to be the norm around here unless its on long travel or a 6”+ lift.

i already folded the pinch welds, did the BMC, remolded the wheel well liner, bump stop spacer for the front bumps, and added durobumps on the second (closer to the cab) bump stop to minimize the possibility of the tire smashing the fenders. I also have a C4 front bumper so the front side clearance shouldnt be an issue.

am i missing anything else? I ordered the dirt kind ball joint UCA, but im thinking maybe the dobinsons billet UCA with adjustable camber would be better/easier to fit the 37s and have proper alignment.

 

There are a couple variables you don't mention. Wheel offset and tire width. Both play a roll in what will and won't fit.

You can also check the 37" thread and ask the guys in there. https://www.tundras.com/threads/dirty-seven-club.40397/

 

yah sorry, forgot about that. The RT01s are 12.5. That seems to be the norm for most guys running 37s on tundras. My wheels are +18 offset. From what ive read, anything from +25 to +15 is the ideal range to still be able to tuck under the oem fenders.

 

You sure those ideal offsets aren't supposed to be negative? When I had my 2019 the magic numbers for offset were -10 to -25 for upsizing tires. I suppose it could start to reverse at some point, but IDK for sure. Like I said, you'll get better answers over in the 37" thread.

 

Yah im sure. The stock wheels are a +60 offset. The plus refers to how far outward from the center of the wheel the mounting plate is. So the higher the number, the farther out the mounting plate is to center of the wheel. 0 offset means the wheel plate is center of the wheel.

so for tundras (my 2018 anyway) anything less than a +60, the wheels and tires will start poking out past the fenders.

ok, ill go ask in that thread. Just wanted to know what the OP did to fit his 37s because it seems like everyone had different experiences on what they had to do to fit them.

 

I understand offset. If you don't start moving the tires/wheels out then you you running the risk of rubbing the tire on the UCS or other suspension components as you widen the tires.

If you want info from the OP you might try the instagram info you gave, as he stated he's not on here much. You might get lucky and get a response here as well. I'm just pointing toward other resources that might get you the info.

 

Did you have to cut or BMC at all? I have 285/75R18 on the stock BBS wheels with the TRD PRO suspension and I want to eventually move to 37s.