34" Tires - Nothing but the truth.... BF Goodrich KM2 - 285/75r17

I know I searched and searched for this set up so I figure I will share the wealth..

So here is the set up, bone stock 2012 TRD Sport 4x4 DCLB. I will post a lot of images of these being installed, so if you have questions or want more images ask quickly as the glass is going on this week and the chance for more images will not last too long.

Tires: BF Goodrich Mud Terrain KM2 - 285/75r17
- Sect. Width: 11.3"
- Tread Width: 8.7"
- Overall Diameter: 33.9"

Wheels: Mickey Thompson Classic Lock 17x9
- Back Spacing: 4-3/8
- Offest: -15
- Part Number: 479412

I know everyone is going to freak out, since there is no lift on the truck yet, but here is the theory behind this. If it wont fit at stock ride height it wont fit when you lift the truck!! Well, it may fit, but it will still hit once the suspension cycles to the stock ride height position of the control arms.

THE FRONT:
So, do they fit? Yes, but this is not a drivable set up. You can not turn the wheel more than a few degrees.

Can taking off or trimming only the plastic flare help? Not really, you will be able to turn the wheel further, but you will still make contact on the rear of the fender opening and the front bumper.

So, bottom line, at this tire size you would need to trim the edge of the front bumper (possibly some of the inner liner), You will need to trim the rear of the Actual Steel Fender, and the plastic fender if you wanted to run that on the truck too.

As for the pinch weld and the body mount, i will update more once the other side of the truck is torn down and the full lock to lock steering can be checked out.

On to the Pictures, Again this truck is at factory ride height with stock suspension in these images.

THE REAR:
They seem to fit pretty well, now by no means was I able to flex the rear out yet, but for daily driving these tires will clear no problem. With a few buddies jumping in the back of the truck they did not touch the fender flare.

Front View:


Driver Front - No Flare - Cab Clearance:



Driver Front - Bumper Clearance:


Driver Rear:


Passenger Front - With Flare:


Driver Rear:


Passenger Rear:


Passenger Front - With Flare - Cab Clearance:


Passenger Front - With Flare - Cab Clearance:


Passenger Front - With Flare - Bumper Clearance:


Passenger Front - With Flare - Bumper Clearance:

 

You're going to rub front and rear without trimming. Even with trimming there may still be some frame/UCA contact, and it's quite possible you'll buckle the bedsides at full flex of the rear axle.

Most of this is pretty much known. There are rubbing issues with 33s.

 

now get to trimming

 

This is the size I want to get when my current tires are done.

did you have to special order them?

Can you get some pics of your truck from further away also.

 

Yes, I am fully aware of the fact that these do not fit. However, when I was looking for details about this size wheel, I could not find much. I was hoping to provide some insight for others on how this will work out and what needs to be done to clearance for these tires. I will continue this write up and the fiberglass installation along the way to help out anyone heading down these two roads.

You can see the solution here:



There is a full set of glass going on the truck, to truly clearance for the tires. Anything else in the way will get the BFH treatment or get cut out of the way!

 

Yes, I will take some pics for you tomorrow, when the sun is out so you can see the whole truck on both sides.

You can see the tires in my build thread. These were ordered from discount tire direct with a pricematch from some dude on ebay. They were $306 each to my door.

The Build

 

Posted before I got there, thanks

 

I'm curious to see how much has to be cut, ground, and hammered to keep those from rubbing at full lock and full suspension compression

 

Not much. He's going glass.

 

Sub'd. I think I like where this is going.

 

nice

 

Moar

 

I saw that. That's why I'm interested.

 

Pretty much cab mount, pinch weld, spacers, and he should be good.

 

Which brand fenders and size you go with?

 

From what I can tell on the actual steel fender, you will need to cut back the metal of the fender itself near the cab. I will take more pictures before we take that side off tonight.

I went with Glassworks Unlimited 4.5" fenders ordered from Camburg Racing.

...also to the others, sorry, no full truck shots yesterday we were blasted in a snowstorm, updates tonight....

 

Subscribed

 

Negative. You will need to cut the cab mount and pound the fenderwell and pinch weld back with a good sized hammer, but tubbing is not strictly necessary. It will result in a bit of a cleaner finished look if you cut and re-tin.

The issue can be minimized by running the smallest wheel spacer/most backspacing you can that keeps you from rubbing the frame in front of the suspension. This minimizes the scrub radius.

 

Are the bfg all terrains 33.9? Or closer to 33