(approx) 30 Minutes
Simple installation for anyone.
- How to Install Mammoth Wheels on your Jeep Wrangler
I'm Ryan from ExtremeTerrain.com and this is my review of the Mammoth Boulder Wheel and Tire Kit, fitting all 1987 to 2016 Wranglers. This kit is available in both 16 and 17 inch wheels and in black, silver and charcoal finishes. Wheel and tire kits are for those of you looking to upgrade the wheels and tires on your JK and you want to do them at the same time. Generally going to a larger tire will mean a new wheel because you'll need a different width, diameter or backspacing, so doing them at the same time in a wheel and tire kit makes things really easy. So if you're looking to upgrade to larger wheels and tires on your Jeep, or if you're just looking to replace the worn out rubber you already have, I definitely recommend taking a look at the Mammoth wheel and tire kits. What I really like about the wheel and tire kits is that everything comes to you mounted, balanced and ready to bolt onto your Jeep all without you having to take a trip to the tire store. So let's talk about this wheel. The Mammoth Boulder is a five spoke aluminum wheel. It looks really nice and it's available in a couple of different sizes. You can get this in both 16 X 8 or 17 X 9 inch, depending on what size tires you want to run on your Jeep. And the wheel is available in three different finishes. You can get black, charcoal or silver, so there's a finish that will look great with your Jeep no matter what color it is.Running a slightly smaller wheel has some benefits, especially for you guys who take your Jeep off road. The smaller 16 inch wheel will have more sidewall than the larger 17 inch, which is great for gripping rocks and different obstacles off road, and the narrower 8 inch wheel will give you natural sidewall pressure so when you air down to a lower PSI when off road, you don't risk losing a beat. But if you like the look of the 17 inch wheel, those are definitely available as well. Maybe more important than the diameter and the width of the wheel is the backspacing, especially for a Jeep. When you are running a larger and wider wheel and tire, there's always the chance that the tire is going to contact either the frame or the control arm when you turn the steering wheel from lock to lock. Having a smaller amount of backspacing will push the wheel and tire package away from the center line of the Jeep giving you the clearance that you need. These Boulder wheels have four and a half inches of backspacing. That gives you enough clearance to run most normal size tires that you'd want to put on your JK. Aside from dimensions, Mammoth made these wheels hub centric, which means that the weight of the vehicle is supported by the center hub and not by the lugs and they're a five by five lug pattern so they'll bolt directly onto your Jeep without the need for adapters. Once you decide what wheel you like, you have a few different brand, styles and size tires to choose from. After you pick that package, you have a few more decisions to make. You will decide whether you want four or a full set of five wheels and tires including the spare, whether you want TPMS sensors in the wheels and tires which will retain all of the factory TPMS system operation, and you'll decide whether you want the white lettering in the tires in or out. No matter how you decide to customize your kit, the tires will be filled with nitrogen which gives you more consistent tire pressure reading regardless of temperature and doesn't bleed through the rubber as much which means you won't have to refill them as often. And the best part about the wheel and tire kits is that they're mounted and balanced for free. So they get to your house, you pull them out of the box and bolt them on the Jeep, all saving you a trip to the mount and balance shop. Because these ship completely assembled, installation could not be any easier. The first thing you'll do is break loose your lug nuts, then jack up the Jeep making sure that you support it with a jack stand for safety. After that, you can remove the lug nuts and get the old wheels and tires off and put the new ones in place. You'll want to use a torque wrench when tightening the new lug nuts and tighten them to factory torque spec to make sure that you don't stretch the threads on the lugs and causing damage. The whole installation should take about an hour and you won't need any specialty tools, just a jack, a jack stand and the proper size socket wrench.So, if you're looking for a new set of wheels for your Jeep, I definitely recommend taking a look at the Mammoth Boulder wheel. They're a really strong, good looking wheel that come in a variety of sizes and finishes, and if you're also looking for new tires, a wheel and tire package is definitely the way to go. You might be able to get tires from here and wheels from here and take them all to a mount and balance shop and save a few dollars, but for the convenience and the customization of a wheel and tire kit, I think you get a ton of value for the price you pay. So that's my review of the Mammoth Boulder Wheel and Tire Kit, fitting all 1987 to 2016 Wranglers that you can find right here at ExtremeTerrain.com.
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Features, Description, Reviews, Q&A, Specs & Installation
Mounting & Balancing ExtremeTerrain offers professional mounting and balancing on all wheels and tires when purchased together on the same order. This will allow you to swap out your old wheels for your new set when they arrive.
What is TPMS? The Tire Pressure Monitoring System (TPMS for short) is a factory installed safety feature on all 2007 and newer Jeep Wranglers that alerts you when your tire pressure drops to an unsafe limit.
How do I keep my TPMS feature? Aftermarket wheels do not come with TPMS sensors. However, if you select 'Add TPMS Sensor’ and your specific year range from the options listed above, we'll install the TPMS Sensors in your new wheels!
For more Information, check out TPMS Sensor Kits in detail.
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
May 21, 2020
Perfect to give your Wrangler an aggressive look!
These wheels have a -6 offset, so they poke out and look super aggressive! They look way better than I could've asked for! Definitely worth it! Especially with how affordable they are! We have a JL Sport S and these wheels with 33x11 tires, there is 0 modification you need to do for them to fit. Still plenty of clearance!Helpful (0)
May 19, 2020
The look that give on my Jeep is insane I loved it....HIGHLY RECOMMEND....Helpful (0)
May 17, 2020
Mammoth boulder rims
Got a set of the mammoth boulder rims 17×9. I like how they look on my jl and would recommend them to anyone. Good price for awesome rimsHelpful (0)
May 13, 2020
JL Mammoth Boulder black wheel
For the price I think these wheels are great! Highly recommendedHelpful (0)
May 03, 2020
Mammoth boulder black
Super fast shipping and a great price. These wheels are a awesome upgrade from my factory steel wheels! Highly recommendHelpful (0)
March 27, 2020
Mammoth Boulder Wheels
These wheels are awesome. Great price and styling.Helpful (1)
February 18, 2020
Wrong Wheels sent three times!
I ordered 5 Mammoth Boulder Matte Black Wheels and have yet to receive the correct order. Initially I was sent three matching Matte Black wheels and two different semi-gloss wheels. When I returned the two incorrect wheels I received one Matte Black and one semi-gloss wheel. I returned the incorrect semi-gloss wheel to receive the exact same wheel in the exact same box!!! As you can imagine I am not happy. Just got off the phone with customer service, hopefully I will get the correct wheel this time.Helpful (3)
January 23, 2020
Same wheel two prices???
I purchased 4 Mammoth Boulder Black wheels for 18-20 jeep jl, $148.99 ea. They sent me an email listing the 4 wheels as 07-18 JK wheels which are priced at $129.99.I called and was told they are the same wheel. Does that sound right to you? I paid $76. more for the same wheels. Sorry cant tell you about the product the service got in the way.Helpful (2)
January 20, 2020
Love them, They look very nice on my 2016 jk. I would definitely recommendHelpful (1)
November 05, 2019
Changing from stock wheels to Mammoth Boulder matte black 17 X 9 wheels, paired with Mud Claw 285 70 R70 tires was awesome. Wanted a 5 spoke black look and couldn't be happier. Great product.Helpful (2)
Will P285/70/R17 fit without rubbing anywhere at full flex with no lift or spacers?
Thank you for your question! A 285/70R17 is about 32.7" tall and about 11.2" wide. With this wheel you will have enough backspacing that you will not need spacers. At full flex with no lift I would not recommend an almost equivalent 33" tire because there will be interference with stock fenders.
Will the stock JK lugnuts work on this wheel?
Hello, yes you can use the stock JK lug nuts on these wheels.
What is the weight, backspacing and offset of this wheel?
This is 23 lbs with a 4.7" backspace and -6mm offset.
Are the Mammoth wheels hub centric for the 2015 JK Willys Wheeler? I have a Dana 30 front axle.
Mammoth wheels do have a hub-centric design.
would these fit a 2018 JL unlimited sport? 17X9 wheel thinking about 33" tires. what do you suggest??
Yes! These Mammoth Boulder Black Wheel will fit your 2018 JL just fine and should have no problem with 33" tires at stock ride height.
Lug nuts are not included.
With the Mammoth Boulder Black Wheel - 17x9 wheel spacers would not be necessary with a tire size of 285/70R17.
We would suggest no larger than a 32x12.50 with the Mammoth Boulder Black Wheel - 17x9 on a stock Jeep. Two popular options for the all terrains is the BF Goodrich All-Terrain T/A KO2 and the NITTO Ridge Grappler Tire.
Yes, they can be used with the factory sensors.
These wheels can use the factory lug nuts or any lug nuts that we offer.
A 33" tire will work without rubbing and will work on this wheel. As far as what tire, this will all depend on what you are doing with the Jeep.
These wheels would not be a proper fit for a 245/75R17 tire.
These will indeed feature the pictured center caps. This would depend on the specific lift kit you have. Please reach out directly to our customer service department via our live chat feature, email at [email protected], or by calling1-877-775-2161 we need to find some additional information about your vehicle before making a recommendation and would be glad to help assist you with this build!
(approx) 30 Minutes
Simple installation for anyone.
What's in the Box
|Backspacing:||4.7" (121mm)||Offset:||-6mm (-0.2")|
|Load Capacity:||1521 lbs (690 kg)||Bolt Pattern:||5x5"|
|Manufacturer:||BF Goodrich||Style:||Mud-Terrain T/A KM2|
|Size:||LT265/70R17 / 32 in||Tread Type:||Mud Terrain|
|Sidewall Color:||Optional Black or White||Max Load:||3195 lbs|
|Weight:||55.9 lbs||Tread Depth in 32nds:||18|