Bought my first Jeep

[Dirty Dog]

The owner of the Jeep took the fenders off to make it look tough.

The fenders, or the flares? Personally, I think it would look dorky without the fenders.

Ride height is no more than 24 inches to the bottom of the from bumper. I’m at 27

So you need to drop it 3". You won't get that by going from 37" to 33" tires. Yes, they're 4" smaller, but only half of that is below the axle, so you will only lower the bumper by 2". And the is based on the unlikely assumption that the tire sizes are accurate.

On the other hand, I did some googling and found this:

Missouri
Bumpers must be at least 4.5 inches tall. Vehicles under 4,501 GVWR have a max bumper height of 24 inches in the front, and 26 inches in the back. Vehicles with a GVWR from 4,501 to 7,500 have a max bumper height of 27 inches in the front, and 29 inches in the back.

The JK Wrangler has a curb weight in the under-4501 range, but GVWR is not curb weight. The GCWR includes the payload capacity. The GVWR for the JK Wrangler is 5400-5700 pounds. Which means your ride height limit is 27" to the bottom of the bumper. Which means you're legal.

 

[tJKrider]

The fenders, or the flares? Personally, I think it would look dorky without the fenders.

So you need to drop it 3". You won't get that by going from 37" to 33" tires. Yes, they're 4" smaller, but only half of that is below the axle, so you will only lower the bumper by 2". And the is based on the unlikely assumption that the tire sizes are accurate.

On the other hand, I did some googling and found this:


The JK Wrangler has a curb weight in the under-4501 range, but GVWR is not curb weight. The GCWR includes the payload capacity. The GVWR for the JK Wrangler is 5400-5700 pounds. Which means your ride height limit is 27" to the bottom of the bumper. Which means you're legal.

Nice research @Dirty Dog !!

 

[DEBigBear]

Welcome JK Newbie! I deal with the same bumper height issues in DE. Its 22" for me (ground to the bottom of the bumper.)

 

[BLACKJKU]

The owner of the Jeep took the fenders off to make it look tough. Ride height is no more than 24 inches to the bottom of the from bumper. I’m at 27

That's easy fix get some steel and make something to add to the bottom of the bumper to get it legal.

 

[JK Newbie]

Still at a loss as to how to get it to pass inspection. I was thinking about finding someone with stock tires and borrow them for the day.

 

[Dirty Dog]

Still at a loss as to how to get it to pass inspection. I was thinking about finding someone with stock tires and borrow them for the day.

Maybe educate the inspector on the difference between curb weight and GVWR, because as the law is written and as you describe your Jeep, it SHOULD pass.

 

[Duster]

As concerns factory specifications, look here:

https://www.autoblog.com/buy/2010-Jeep-Wrangler+Unlimited-Sahara__4dr_4x4/specs/

Lift can be a tricky thing to determine. When I bought mine, used, it was noticeably higher than my first. Your original set should have included a DANA 30 front axle and a Dana 40 rear. The stock Rubicons have 40s front and back. The gear ratio should be stamped on the rear of the transmission somewhere. It varies with the transmission type. Nice looking ride.

 

[Dirty Dog]

As concerns factory specifications, look here:

https://www.autoblog.com/buy/2010-Jeep-Wrangler+Unlimited-Sahara__4dr_4x4/specs/

Lift can be a tricky thing to determine. When I bought mine, used, it was noticeably higher than my first. Your original set should have included a DANA 30 front axle and a Dana 40 rear. The stock Rubicons have 40s front and back. The gear ratio should be stamped on the rear of the transmission somewhere. It varies with the transmission type. Nice looking ride.

I don't believe there is any such thing as a Dana 40. If you know of one, please let me know.
Most base Wranglers have a Dana 30 in the front and a Dana 35 in the rear. I believe you can special order one with a Dana 44 in the rear.
The Rubicons have a Dana 44 front and rear. They also have lower gearing (4.10:1) in the differentials, and a 4:1 low range in the transfer case, as opposed to the 2.73:1 low range in non-Rubicon Wranglers.
If the Jeep has been modified, I would never trust that gear ratio tag on the differential (not transmission). There's too much chance it's been changed. Get the rear end off the ground, mark the driveshaft, spin a tire, and count the number of revolutions the driveshaft makes.

 

[tJKrider]

I believe you can special order one with a Dana 44 in the rear

Correct, and in later years the rear Dana 44 in non-Rubicons was fairly common w/LSD. Mine has that option.

 

[Duster]

I don't believe there is any such thing as a Dana 40. If you know of one, please let me know.
Most base Wranglers have a Dana 30 in the front and a Dana 35 in the rear. I believe you can special order one with a Dana 44 in the rear.
The Rubicons have a Dana 44 front and rear. They also have lower gearing (4.10:1) in the differentials, and a 4:1 low range in the transfer case, as opposed to the 2.73:1 low range in non-Rubicon Wranglers.
If the Jeep has been modified, I would never trust that gear ratio tag on the differential (not transmission). There's too much chance it's been changed. Get the rear end off the ground, mark the driveshaft, spin a tire, and count the number of revolutions the driveshaft makes.

Yep. Thanks for catching that. Not sure what the hands typing were thinking. All I can think of is that somewhere between the brain and the fingertips something decided to round the number to the nearest multiple of 10.