hi guys! I need help knowing the largest wheels I can put on my 06 jeep commander! - Jeep Commander Forums: Jeep Commander Forum
Wheels / Tires This section contains discussion about wheels and tires for your Jeep Commander.

 
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post #1 of 5 (permalink) Old 03-21-2015, 09:25 AM Thread Starter
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hi guys! I need help knowing the largest wheels I can put on my 06 jeep commander!

Hi! The topic pretty much says it I'm sorry if this has already been discussed I'm new to this site. Anyways I'm installing a leveling kit 3" rear 2.5" front and want to get a nice set of tires I wanted to know how big I can go I've tried learning the numbers and all that on tires and what they all mean but I just get a headache! So if anyone could share pics or advice It would be much appreciated! Thanks guys!
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post #2 of 5 (permalink) Old 03-21-2015, 12:25 PM
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New Here? Read this Thread for FAQ's on Tires, Lifts and Spacers!

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Originally Posted by New Here? Read this Thread for FAQ's on Tires, Lifts and Spacers!
Q: How do I read my tire size, and what do the numbers mean?

A: When reading tires, there is a few things you need to know. Ill start out by talking about the stock tire size which is 245/65R17.
The first number is how wide the tire is in Milimeters. The stock tire is 245mm wide which is equivalent to 9.6 inches. Just for future reference, for ever 10mm you are looking at approx .3937 inches wider.
The second number is the percentage of the width that makes up the side wall of the tire. So 65% of the 245mm width is how tall the side wall of the tire is. That comes out to be approx 6.2 inches. Now if you take that 6.2 inches and multiply it by 2 (since you have side wall both above an below the wheel) and then add the size of the wheel, 17 inches you get 29.4 which is the approx size of the tire.
The last number is the wheel size. Stock wheels and the Commander are 17 inches.

Now if you are looking at a tire that is 33x12.5R17 it is a little different.
The first number is how tall the tire is. In this case it would be 33 inches tall.
The second number is the width of the tire which is 12.5 inches wide.
The last number stays the same and still represents the size of the wheel which is 17 inches.





Available Tire Sizes from Stock to 4.5" Suspension Lifts


Tire sizes on the Jeep Commander are limited due to rubbing on the upper control arm ball joint bolt and the rear portion of the plastic fender well. Depending on the size tire, wheel spacers may be needed to clear the ball joint bolt. Depending on the height of the tire, the rear portion of the fender well plastic might need trimming and bending over the pinch weld might be required.


Stock Jeep Commanders or Commanders using the 1/4" leveling spacer can fit the following tire sizes WITHOUT wheel spacers and no rubbing:

245/65R17 (Stock Tire Size)
245/70R17
245/75R17 BFGoodrich All Terrians (might have minor rubbing)
255/65R17


Jeep Commanders ranging from the 2" spacer lifts to the 3.5 Rock Krawler kit can fit the following tires WITHOUT wheel spacers and no rubbing:

245/65R17 (Stock Tire Size)
245/70R17
245/75R17
255/65R17
255/70R17


Jeep Commanders ranging from the 2" spacer lifts to the 3.5 inch Rock Krawler kit can fit the following tires WITH wheel spacers but will cause minor rubbing: (MINOR TRIMMING OF THE REAR PLASTIC FENDER WELL AND BENDING OVER OF THE PINCH WELD REQUIRED)


255/75R17
265/65R17
265/70R17


Jeep Commanders with 4" of lift or more can fit the following tires WITHOUT rubbing (depending on the backspacing of the wheel or size spacer you use). New wheel with maximum of 5.5" of Back Spacing is required or a 1" wheels spacer for installation.


265/70R17
275/65R17
275/70R17 (Might have minor rubbing depending on the Back Spacing of Wheel)


Jeep Commanders with 4" of lift or more can fit the following tires WITH the proper back spaced wheel and have minor rubbing. Trimming will be required. New wheel with maximum of 5.5" of Back Spacing is required or a 1" wheels spacer for installation.


285/70R17


*Any tire larger than that size will need additional lift and major cutting/trimming of the fender well/fender flares/pinch weld.

2007 Red Rock Crystal Pearl Overland
- 2" Daystar lift - 245/75/17 Revo 2s - 1.5" Spidertrax Spacers -
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post #3 of 5 (permalink) Old 03-21-2015, 02:12 PM
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So most Tires are around 32"? Any way to get a 255/70r17 in a 33" tire? Or am i just not understanding tire sizing
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post #4 of 5 (permalink) Old 03-21-2015, 03:47 PM
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Tire aspects don't work quite like that. If you wanted something like a 255/70r17 your looking at a tire thats about 31.1" tall. Of course this varies a bit based on style and manufacturer.

One good resource is a place like tirerack and others where you can look up the actual specs on a tire. I'm not endorsing them...just that they can be used for a reference to see how tall and wide of a tire you will get, based on the aspect ratios of a particular tire.
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post #5 of 5 (permalink) Old 03-21-2015, 07:25 PM
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The above size charts is the standard sizing convention for passenger car and light truck tires. It is in metric units, and represents the same sizing scheme as truck tires, but in metric form (millimeters).

In a p-metric tire sizing scheme, take the first number, multiply by the second number, divide by 1270 (which is a combination of the 25.4 mm to inches metric conversion, the 2x multiplier for the two sidewalls, and percentage conversion) and add the third number.

E.G. 245/75R17 would be 245*75/1270+17=31.46" total height.
255/70R17 would be 255*70/1270+17 = 31.05" total height.

Your 33" tire would be most closely the 285/70R17 listed above, which requires body modifications and 4+ inches of lift.

285*70/1270+17=32.71" total height.

2007 Red Rock Crystal Pearl Overland
- 2" Daystar lift - 245/75/17 Revo 2s - 1.5" Spidertrax Spacers -

Last edited by Schlotzky; 03-21-2015 at 07:30 PM.
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