4x4 Chevy Suburban

Grows bigger on 49 inch tires and Atlas gears!

BIG Suburban - 49 Inch Tires and Atlas Gears

Go Big - Go Suburban - Go Suburban AND fit 49 inch tires! - That's BIG!

Kristjan Kristjansson - Stjani - has done just that. After spending countless hours and days in his garage his 49 inch modified GMC Suburban is now street legal again.

How To Lift Your 4x4 Truck! How To Lift Your 4x4 Truck!

BIG Suburban - 49 Inch Tires and Atlas Gears

The reason I heard about Stjani's Suburban was that he was having an Atlas transfer case installed. The Atlas box replaces the original transfer case adding two extra low gears. This one has gearing for 2.7:1, 3.8:1 and 10.34:1. If the 10.34 to 1 is not low enough Stjani can engage his extra low gear of 2:1 for a grand total of 20.68 to 1!.

BIG Suburban - 49 Inch Tires and Atlas Gears

Stjani is working on the interior decoration. The three Atlas control sticks are located under the center console tray. Also visible is the VHF radio, air bag pressure meters and shock pressure meters.

BIG Suburban - 49 Inch Tires and Atlas Gears

His beefy tires need strong axles and driveline. Up front is a Dana 60 reverse with extra strong axles, air lockers and air bag suspension.

Rear axle is a 14 bolt GMC/Chevy - also with air lockers and air bag suspension.

Stjani took me for a short test run on his GMC Suburban. We got to a little use rock mine to get a feeling for its capabilities.

BIG Suburban - 49 Inch Tires and Atlas Gears

First test is for climbing a steep and loose slope with plenty of mud. With the help of the strong Duramax 6.6 engine and after airing down the tires a little he took the challenge with no problems and no unwanted tire spinning.

 

BIG Suburban - 49 Inch Tires and Atlas Gears

Next up was the flex test. Even though the balance bars are still connected the Sub flexes quite a bit. The left rear tire was starting to lift soon after this picture was shot! This is about as far as I would dare take it without rolling over.

 

49 inch Suburban - Off Road Tour Pictures

BIG Suburban - 49 Inch Tires and Atlas Gears

Last weekend Stjani took his Suburban along with two other trucks for a snow riding tour around Hofsjokull to the geological center of Iceland. One is a 6x6 Dodge Ram on 44 inch Trxus tires and the other a Nissan Patrol on 38 inch Monster Mudders.

BIG Suburban - 49 Inch Tires and Atlas Gears

Even though the Sub is quite heavy it showed that larger tires make it up in floatation. Going over this snow bridge proved easy by just going extremely slowly and with the aired down tires evening out the weight.

4x4 Off Roads!

4x4 Off Roads!

BIG Suburban - 49 Inch Tires and Atlas Gears

Amazingly the tires don't look overly large for this truck. They just seem to be made for this SUV.

BIG Suburban - 49 Inch Tires and Atlas Gears

There is not much stopping this truck!

BIG Suburban - 49 Inch Tires and Atlas Gears

Kristjan standing in front of his Suburban.

Some trucks with larger tires seem to loose a lot of their highway driving capabilities but I can tell you that this Suburban is not one of them. In fact it rides just like a normal car - only difference is in the off road capabilities.

 

Off road travel pictures by owner Kristjan Kristjansson and travel companions Jorgen and Gunnar Jul.

By Thrandur Arnthorsson
Thrandur is the chief-editor and owner of 4x4 Off Roads and an 4x4 off road enthusiast. Living in Iceland he loves to share the coolest 4x4 trucks and supporting more offroad freedom.
Thrandur is the author of the free ebook How to lift your 4x4 truck!.



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