All Terrain Tire - Height and Offset question

[OldGuardV6]

I know that this is probably a bizarre question, but it never hurts to ask!

I do a lot of off highway driving on dirt/gravel and it would be nice to have an extra set of tires/wheels that have a taller sidewall and better traction for certain trips. I have done this on an old GTI and my 560, with great results, but the Mustang has proven a little bit more difficult since I can't go down to a 15" or 16" wheel.

I am running stock suspension, and I was looking at getting a set of Motegi MR139s with 225 60 17 tires (27.6"). (That’s only a .3” height difference with the 235/50/18s that I’m running) Those look like they would be fine, and TireRack has said that size is a standard replacement for the Mustang, but I was wondering how much bigger you can go!

I would rather run 225 65 17s on the rear, but they look like they will be too tall (28.5"). Any Opinions? What is the max height that I can go without rubbing in the rear?

Thanks in advance for any help!

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[JohnDoe]

I'm currently at 28.6" diameter (245/50/19 DWS06) with no rub. I plan on down sizing to 18" wheels and upsizing to 29" A/T Tires (255/55/18 KO2's)

You should be fine up to 29 inch tires, but I still really want to find out what's the absolute MAX tire HEIGHT I can fit in this Mustang before a lift or fender cutting is needed.

Here's what 28.6 inches looks like

 

[OldGuardV6]

I'm currently at 28.6" diameter (245/50/19 DWS06) with no rub. I plan on down sizing to 18" wheels and upsizing to 29" A/T Tires (255/55/18 KO2's)

You should be fine up to 29 inch tires, but I still really want to find out what's the absolute MAX tire HEIGHT I can fit in this Mustang before a lift or fender cutting is needed.

Here's what 28.6 inches looks like

Thank you!! I really appreciate the pics. That makes me feel a lot better about getting a more aggressive A/T or M/T tire for the drive wheels. On my 560 I had M/Ts on the rear with a tread similar to the Yokohama Geolander (https://www.tirerack.com/tires/tire...5QR7G003&vehicleSearch=false&fromCompare1=yes) and while I went on some sketchy/sloppy mud roads, I never felt like I didn't have enough traction to get moving.

I had been leaning toward the Continental 225/60/17s as they are actually 1lb less than my stock 18s with the Continental TCs and the Motegis. (https://www.tirerack.com/tires/tire...6HR7TCAT&vehicleSearch=false&fromCompare1=yes) but I still think I might just by two extra rims with 225/65/17 M/Ts, just in case!

Anyway, I appreciate the response!!

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