Largest Tires Can Fit On Stock JK Wranglers Without A Lift

Some of us want to put on larger tires on or Jeep JK without having to put on a lift, here is a guide you can refer to:

Jeeps Wrangler JK come stock with three different tire sizes and the stock backspacing is 6.25" (The larger the backspacing the further your wheel will be away from the fender, the smaller the backspacing the closer your wheel will be to the fender )

•  225/75/16 (29”x9”)

•  255/75/17 (32”x10”)

• 255/70/18 (32”x10”)

The largest tire diameter that will fit on a stock wrangler JK is a 33" tire. You should not have any problems with this diameter tire on the street, but off-road there will be flex which may allow the tires to hit your fenders and possibly break them.

A 33" x 10" tire will have the least problems even off-road.
A 33" x 11" tire can be used without problems in most cases. You may have to do some very minor trimming or adjust the steering stops by adding some washers to limit tire travel. You may also need to add wheel spacer to avoid tire to suspension component contact, all are easy simple mods to do.

Common tire sizes in 33" x 11" are 285/75/16, 285/70/17, 275/70/18


If wanting to use a 33" tire with a larger tire width than 11" such as 295/70/17 = 33x11.6, 305/60/17 = 33x12, 305/70/16 = 33x12, 295/65/18 = 33x11.6 you will need to use wheel spacers as 1.50" spacers or aftermarket wheels with 4.5" backspacing or less.

Some good tires to replace your stock tires with are:

1. BFG Mud-Terrain T/A KM2 285/75R17 (Dia = 33.90") Sec width on 8.0" wheel is 11.30" fits stock 7.5" wheels. 
2. BFG A/T KO 285/70R17 (Dia = 32.75") Sec width on 8.5" wheel is 11.49" fits stock 7.5" wheels.
3. BFG A/T KO 275/70R18 (Dia = 33.18") sec width on 8.0" wheels is 10.98" fits stock 7.5" wheels.
4. Toyo Open Country A/T ll 285/70R17 (Dia = 32.80") sec width on 8.5" wheel is 11.50" fits stock 7.5" wheels.
5. Toyo Open Country A/T 285/75R17 (Dia = 33.8") sec width on 8.0" wheel is 11.20" fits stock 7.5" wheels. 
6. Goodyear Wrangler Dura Trac 285/70R17 (Dia = 32.80" sec width on 8.5" wheels is 11.50" fits stock 7.5"wheels.
7. Nitto Terra Grappler 275/70R18 (Dia = 33.27") sec width on 8.0" wheel is 10.94 fits stock 18" 7.5" wheels. 
8. Nitto Terra Grappler 285/75R17 (Dia = 33.86") sec width on 8.0" wheel is 11.30" fits stock 7.5"wheels.
9. Nitto Terra Grappler 295/70R17 (Dia = 33.19") sec width on 8.5" wheel is 12.13" fits stock 7.5" wheels. Note, you need to use wheels spacers or wheels with less backspacing than stock wheels with this tire.
10. General Tire Grabber AT2 275/70R18 (Dia = 33.20") sec width on 8.0" wheel is 10.90" fits stock 7.5" wheels.
11. Dick Cepek Radial F-C ll all terrain 285/70R17 (Dia =32.80") sec width on 8.5" rim is 11.40" fits stock 7.5" wheels.

This 4 door Jeep JK is sporting 295/70/17 tires on stock wheels with spidertrax 1.5 wheel spacers, jeep has no lift and no rubbing. (Photo courtesy of jeepforum.com)

Remember going to a taller diameter tire will lift your wrangler JK a little higher up than stock, so it is possible you can rollover a little easier. If you go little higher, it is a good idea to go a little wider as well, this will help the jeep from rolling  over and give it more stability. Many people putting on wheels spacers or aftermarket 4.5" BS  wheels say their jeep handles better and feels much more stable on the street. This also gives your jeep a nice stance over stock looking stance.

Also in regards to handling, generally an 18" tire handles better on the street than a 17" tire and so on. If you are not going to off-road your jeep and want better street manners/handling choose a possible 18" tire rather than a 17" if making a wheel change over stock. Also adding stiffer gas shocks will improve street handling over stock wrangler Sport shocks which are not high pressure gas. The Rubicon comes with gas shocks (red shocks) in stock form, but wrangler sports do not.

Here is a common saying when upgrading tires for new jeep JK owners by long time jeep owners "You don't know it yet, but you will eventually end up here, 35's - 37's tires and a 2"-3.5" lift".




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2013 Jeep Wrangler Overview

 Two door Jeep Wranglers come in either Sport trim, Sahara trim or Rubicon trim with standard fourwheel drive. A new 285-horsepower 3.6-liter V6 engine and six-speed manual transmission are standard, optional five-speed automatic is available. Electronic stability control with roll control, traction control, brake assist and hill hold control is now standard on all Jeep Wranglers. The Sahara trim offers body color flares, Infinity speakers, remote keyless entry, power windows, security alarm and 18-inch wheels and tires. The Rubicon features equipment that the off-road enthusiasts usually add anyway, which includ heavy duty axles, front and rear electronic locking differentials, 32-inch BF Goodrich mud tires, sway bar with disconnect system, rock rails and a heavy duty transfer case with 4:1 low-gear ratio to top it off.

The now available Freedom Top (Hard Top) which is now a three-piece hardtop that will now allow the panels to be removed above the drivers or passengers side of vehicle. Other options include Dual Top Group, half doors, remote start system, front seat-mounted side air bags, and a multimedia infotainment system that comes with a 28-gigabyte hard drive and navigation system.The interior is still designed to withstand good abuse, and can even be hosed out on the models with cloth seats.

Also new for 2013 is trailer sway damping that is now standard equipment on all trims, and Sahara and Rubicon also receive new wheels and an auto dimming rear view mirror.
Fuel economy is rated at 17/21 mpg regardless of transmission for the two-door Wrangler. Trailer towing is capped at 2,000 lbs.

The suspension for the Wrangler is a five-link coil setup with tuned shock absorbers. This setup works with Dana 30 front and next-generation heavy-duty Dana 44 rear axles. The Wrangler Rubicon model uses heavy-duty front and rear Dana 44 axles.Underbody protection is provided by three strong skid plates, which protect the fuel tank, transfer case and automatic transmission oil pan.

A photo of a lucky persons new 2013 Jeep Rubicon in Crush color, note the new wheels for 2013 models.

Here is a photo of a 2013 Jeep Wranger in True Blue (photo from carlot.com) Looks like it has some upgrades as bigger tires, different wheels, and poss lifted.

Here is photo of 2013 4 door unlimited Jeep Wrangler from (project-JK.com) in the new color Rock Lobster, kind of a bright red/orange mix. I love the color, it looks cartoonish and will really standout on the street.


See a 2012 JK Wrangler Orange Crush color with 37's (Tires) on it. What a difference, the whole stance of the jeep changes, very good look. You could do exactly the same with a 2013 jeep JK.

 

 

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