Will a 245/70R17 fit in the spare tire space? - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 18 (permalink) Old 10-23-2008, 04:35 PM Thread Starter
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Question Will a 245/70R17 fit in the spare tire space?

Will 245/70/R17 tire fit in the spare tire space with the hitch? I'm debating on buying 245/70/R17 or 255/70/R17.

06' Black Limited QDII HEMI - 2" Revtek Lift 245/75/17 Goodyear Duratrac -Monroe Sensa Trac Struts and Sensa Trac Load Adjusting Shocks.
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post #2 of 18 (permalink) Old 10-23-2008, 06:29 PM
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I cant give you a definate answer since I'm not running that size tire but I do know that its only 1 inch larger then stock. With that being said I would almost bet that you can get it up there without any problems.




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete
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post #3 of 18 (permalink) Old 10-23-2008, 07:37 PM
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Quote:
Originally Posted by 07JeepXK View Post
I cant give you a definate answer since I'm not running that size tire but I do know that its only 1 inch larger then stock. With that being said I would almost bet that you can get it up there without any problems.
Yes I agree
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post #4 of 18 (permalink) Old 10-23-2008, 07:44 PM
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Use the tire calculator in the tire size sticky to get a size comparison. Click Here



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post #5 of 18 (permalink) Old 10-23-2008, 07:58 PM
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When you have a set tire size like a 245/65R17 and go to the next size taller tire but with the same with ie. 245/70R17 you will gain exactly an inch. If you go up to a 245/75R17 from a stock tire size it will be two inches. If you have a tire that has a 1 inch smaller wheel ie. a 16 inch wheel, you will need to make up for that inch to have the same height as the tire with the 17 inch wheel. With that being said a 245/70R17 would be the exact same size (width/height) as a 245/75R16. The only difference would be the section height of the tire due to one wheel being an inch larger then the other.

So there is no need to go to a tire size calculator. The tire is the same width as stock and 1 inch taller. It should fit fine!




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete
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post #6 of 18 (permalink) Old 10-23-2008, 08:40 PM
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I'd say the best way to tell is to get up underneath and see if you have at least a 1/2" of open space between the current tire and the hitch bolts. If you do, then it should fit.

2006 Silver Jeep Commander Limited 4X4 - 5.7L Hemi, Quadra Drive II, Navigation System, Chrome Fuel Door, Sunroof, Rusty's 2" Lift Kit, Moto Metal M0950 Rims, Goodyear Silent Armor 255/70/17, Front Skid Plate, 4XGuard Belly Skid Plate, RR Supersliders, Chrome Front Tow Hooks, AEM Brute Force Intake, and WeatherTech Floorliners. See Pics
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post #7 of 18 (permalink) Old 10-23-2008, 08:42 PM
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Any chance in hell a 245/75 would fit? +2"??

2008 Jeep Green Rocky Mountain 4x4 4.7L, 245/65 R17 Fortera's,
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post #8 of 18 (permalink) Old 10-24-2008, 02:26 AM
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I have 245/70/17 on mine with the OEM hitch, it's tight but the spare fits.

2007 Midnight Blue, 3.0L CRD, 2" Lift, Bullbar, Mickey Thompson ATZs (30.5").
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post #9 of 18 (permalink) Old 10-24-2008, 11:30 AM
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Id say no to the 245/75.




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post #10 of 18 (permalink) Old 10-24-2008, 11:42 AM
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Quote:
Originally Posted by 07JeepXK View Post
When you have a set tire size like a 245/65R17 and go to the next size taller tire but with the same with ie. 245/70R17 you will gain exactly an inch. If you go up to a 245/75R17 from a stock tire size it will be two inches. If you have a tire that has a 1 inch smaller wheel ie. a 16 inch wheel, you will need to make up for that inch to have the same height as the tire with the 17 inch wheel. With that being said a 245/70R17 would be the exact same size (width/height) as a 245/75R16. The only difference would be the section height of the tire due to one wheel being an inch larger then the other.

So there is no need to go to a tire size calculator. The tire is the same width as stock and 1 inch taller. It should fit fine!
Um, I'm missing something here,

Using the example of a 245/65R17, 245 is the section width expressed in millimeters.
65 is a percentage, I.E. the sidewall is 65% as tall as the tire is wide.
The R and 17 require no explanation.
The explanation you are providing.........I'm missing something

More definition and source?
Thanks,
.........Rob


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