Mud-Terrain & All-Terrain Tire Reviews
Pro Comp Xtreme Mud Terrain
Pro Comp Mud Terrain

Parnelli Jones Dirt Grips
Dunlop Radial Mud Rover
Hankook Dynapro MT
Nitto Mud Grappler
Dick Cepek Mud Country FC II
Maxxis MT-754 Buckshot Mudder
Maxxis MT-762 Bighorn Radial
Maxxis M-8090 Creepy Crawler
Mickey Thompson Baja MTZ
Goodyear Wrangler MT/R Tire
Interco Swamper TSL Radial
Interco Super Swamper Bogger
Interco Super Swamper Trxus M/T
Toyo Open Country M/T
Interco Swamper SSR
BF Goodrich Mud-Terrain T/A KM
Pro Comp Xtreme All Terrain

Pro Comp X-Terrain
Hankook Dynapro ATm
Nitto Terra Grappler
Nitto Dune Grappler
Dick Cepek Radial FC II
BF Goodrich All-Terrain T/A KO
Toyo Open Country A/T
Mickey Thompson Baja Claw
More Reviews

Tire Tech
How-To Read a Tire
How to pick the right tires for your Jeep
Tire Size to Ratio Conversion Chart
Jeep Tire Sizes - What Fits?
Wheel Terminology
More Jeep Tech

projects and installs

Toyo Open Country M/T Tires
on the 2007 JK Wrangler Unlimited Rubicon

Fresh off the install of the TeraFlex 2.5" Budget Boost Lift a new set of tires were needed to be fitted onto the JK to finish the set up.  After a visit to OK Auto and trying a Toyo 35" we decided on a smaller size.  See Will 35's fit on my JK Wrangler with stock rims?

Why Toyo?  We though long about what we are doing with this Jeep in order to make the best selection of tire.  We are building this Jeep to be a fun weekend wheeler and yet be a Jeep with excellent street manners.  The Toyo Open Country M/T tires seem to be a good mix of an aggressive off road mud tire but yet tamed slightly more than others to make street driving more civilized.  The tires feature siping for wet/snow driving and a tread pattern that reduces noise and vibration.

The size...The Rubicon Jeeps come with 32" BF Goodrich Mud Terrain tires so larger was only natural.  Knowing that width would be an issue as well as height we found this tire size, 295/70R17.  Running that through a metric tire size calculator it converts to a 33.3X11.6X17 tire.  Basically a 33X11.5 slightly more narrow than a 33X12.5.  The Toyo tires seem to run accurate to their claimed size meaning this tire did measure in at slightly more than 33 1/4", often tire actual size is less than the claimed size.  Note, after the tires were installed and had the Jeep's weight on them they measured in at 32 3/4".

For example, a manufacturers 33X12.50 is actually 32.3" tall.  After deciding on the size OK Auto ordered up a set for us.

size comparison

width comparison

Installation:  We took the Jeep to OK Auto and they mounted one on a rim and we did a test fit on the drivers side rear.  This was a problem spot with the 35" tires due to the upper control arm and rear sway bar link hitting the tire.  The 295 tire still slightly hit the upper control arm and rear sway bar link but only at full suspension expansion.  This is not a problem for every day driving and tire rub is only slight on the rounded surface.  An adjustable track bar or track bar relocation bracket would probably solve the problem since the rear axle has moved to the passenger side due to the lift.

mounting and balancing

arrow indicates where the sway bar makes tire contact

After we determined what may need to do to correct the rub the rest of the tires were mounted, balance, installed and tightened to the proper torque.  We also tested front steering clearance, the only rub is with the front lower control arm when the steering is fully turned.

The new JK will have some potential issues when trying to install larger, wider tires.  The two solutions to avoid the rubbing problems would be wheel spacers (like SpiderTrax) or aftermarket wheels.

For our review on the tires' see the review section.  Toyo Open Country M/T Tire Review

What's it look like?  Here is a small gallery of after images.

After thoughts:  The Jeep looks well balanced and still retains it's stock look.  To the average observer the Jeep may look like it came that way, that was what we were looking for.  See a write up on our thoughts regarding the off-road performance of these tires, we put them to the test at OK Auto's Grand Reopening weekend.

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