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Old 10-07-2010, 09:50 AM   #1
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Question Unusual Tire Question

Most of the tire questions I read here are about biggest tire you can mount on stock rim without rubbing.

I want to know what are the biggest/widest tire I can mount on aftermarket wheel (with backspacing) without any lift and without rubbing... Or, at least, doing only minor mods.

I'd like also the tire to be flush with stock plastic fenders so I get no problem with cops.

I guess I'll decide later on if I want 16 or 17 inch wheel.

My ride is a Rubicon 2008 2dr stock.

Thanks

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Old 10-07-2010, 10:13 AM   #2
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Tallest you can go will still be 32 without rubbing. You can go wider depending on the bs of the new wheels, but if you don't raise the suspension, then taller isn't gonna happen if you want to go offroad, or over curbs or something... You might fit a short 33 in there, but you may rub the flares.

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Old 10-07-2010, 10:26 AM   #3
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I read about 285/70R17 and 285/75R16 but I was willing to go wild with some 305mm or 315mm width.

What kind of backspace would I need for 285, 305 or 315?
Would the tire stick out of my flare?
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Old 10-08-2010, 10:08 AM   #4
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I'm also wondering if my calcul would work:
285mm --> 11.2inch and 305mm --> 12inch
So those tire have a width difference of 0.8inch. (divided by 2 for each side of the tire = 0.4)

Let say that a backspace of 4.5 is perfect for the 285mm, that would give us a backspace of around 4 to fit a 305mm tire.

Is it working that way or I'm missing something?
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Old 10-08-2010, 10:35 AM   #5
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With your suspension being stock, the tallest and widest tire you can run will really depend on your aftermarket wheel specs. With width and offset (or backspace) makes all the difference for any fittment. There are aftermarket wheels with widths and offsets close to the stock specs and there are aftermarket wheels that are wider and have lower offsets (pushing the wheels out).

I'll post a thread here in a few moments that explain backspace and offset a little better.
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Old 10-08-2010, 02:19 PM   #6
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I should note here that 17" wheels have more wheel choices for what you are looking to do. I suggest running an 8.5" wide wheel that has an offset between +18mm to +25mm mounted with tire size 285/70-17's. The +18 offset on the 8.5" wide wheel mounted with the 285's will sit nearly flush and should work without any rubbing.

-Matt
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Old 10-11-2010, 08:13 PM   #7
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Thanks for all the good answers.

I think I will get some 285/70R17 for the moment as it seems to be a popular setup and the tires fit flush with the flares.

Do you have nice looking and resistant mag brand to propose to me?
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Old 10-12-2010, 11:12 AM   #8
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We have quiet the selection of great looking wheels that fit the bill. I like the V-Tech Off-Road in matte black. We also have the Chaos 5, MB V-Drive, MB72 (mirror machined), GFXOR9, and American Outlaw TNT (this is a sleeper wheel IMO). I would post links but our post count isn't quiet there yet. You can search these wheel on our site by entering your vehicle information. Please note that some wheels listed in the results have a low offset which will stick the wheels poast the fender. You can call us at 1.888.459.4080 and anyone of our agents would be happy to assist.

Hope this helps.

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Old 10-12-2010, 08:33 PM   #9
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I bought my wheels (Choas 5's) from Discount Tire Direct and the phone staff were very helpful. The entire process was smooth. Very happy with the service, product and price.
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Old 10-14-2010, 01:01 PM   #10
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Thank you for your support R-Law. We appreciate the kind words.

-Matt

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