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Old 02-22-2015, 02:07 PM
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Larger tires on 2014GC, but wider in back?

It's time for new tires on my Grand Cherokee Overland. I'd like to get larger tires, and wider in the back. I've done a ton of research but need a gut check. Stock tires are P265/50R/20, and based on online information the stock WRD wheels are 20x8, but I can't nail down the backspacing.

What size wheel combination would be the same for the front and wider in the back, and what size larger tires would fit?

Edit:
I'm thinking 275/55/20 in the front and 305/50/20 in the back, with 20x8 in front and 20x10 in the back. The new question would be, what backspacing do I need on the rims?




Wheel info: Jeep Grand Cherokee WK2 - 2011-2015 Grand Cherokee wheels and tires
Tire Info: Rim & Tire Size Calculator. Custom Offsets - Wheel-Size.com

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Old 02-22-2015, 06:32 PM
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Re: Larger tires on 2014GC, but wider in back?

Here's a web site you can use for reference & to play with different combinations.

Online Wheel and Tyre Fitment Calculator. Offset, Tyre Stretch and Speedo Error | Will They Fit

I know when people go up to the staggered 22" reps, they go with a +30mm offset for the front & a +45mm offset for the back.

I've done a screen capture of how that kinda looks with your tire sizings. Hope that helps. Maybe some of the offset gurus on this forum can throw their 2 cents worth in, since I'm an amateur with that stuff.


Also, the offset for the stock OEM 20's in +56.4mm.
Attached Images
File Type: png Capture 2.PNG (302.9 KB, 24 views)
File Type: jpg OEM Jeep 20x8inch wheel offset 56.4.jpg (37.6 KB, 17 views)
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Old 02-22-2015, 08:07 PM
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Re: Larger tires on 2014GC, but wider in back?

Those tire sizes are not the same rolling diameter which WILL result in damage to your drivetrain if you mount these on a 4x4 Jeep.
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Old 02-22-2015, 09:07 PM
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Re: Larger tires on 2014GC, but wider in back?

((305*50) - (275*55)) *2

Only if you drive in low range on dry bitumen for ages mate.

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Old 02-25-2015, 08:47 AM
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Re: Larger tires on 2014GC, but wider in back?

What They said x2 ^^^^^^^

those are diff size diameter\

you need to do your homework ...online there are charts which tell you all the tire diameters of all sizes and widths.
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Old 02-25-2015, 08:54 AM
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Re: Larger tires on 2014GC, but wider in back?

I was actually saying that the difference is f'all.
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Old 02-27-2015, 12:55 AM
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Re: Larger tires on 2014GC, but wider in back?

I didn't think much of the tolerance at first, but it would need to be considered.

I've decided on 275/55 at any rate.
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Old 02-27-2015, 04:03 AM
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Re: Larger tires on 2014GC, but wider in back?

If you want a wider stance you need 20x9 wheels which will have the +35 offset. (or 20x10 +50).

I have 285/50 R 20 tires on Factory Reproduction SRT replica 20x9 +35 offset wheels.

Compared to the stock 20x8 +56 offset wheels, these wheels make the tires look better/wider from the front and back; that, and because I needed to clear Brembo calipers in front, is why I got them.

Even though my 285 tires are slightly wider (and taller) than 265 tires, the wheel size and offset is what makes the visual width difference. Even stock 265/50 tires would look better, especially from behind, with these wheels.

Some non-SRT people go with the stock SRT size 20x10 but I didn't want that size. You may want them if you want that extra beefy look. (but check if 275/55 fit 20x10 wheel)
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Old 02-27-2015, 09:45 PM
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Re: Larger tires on 2014GC, but wider in back?

I just found a set of replica srt's for 1K, which is pretty neat, but I'm looking at purchasing a gobi roof rack too. I'm not sure if a taller tire fit in there on 20x9 rims either.

If I don't replace my rims, spacers would essentially do the same thing correct? I am wanting a wider look in the back. A 56.4mm offset with a .75 inch spacer would make it more like a 37mm offset?
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