Will a 275/65/18 size tire fit on a Jeep Grand Cherokee WK2?

[PioneerOverland]

I currently have a 2017 Jeep Grand Cherokee Trailhawk. It does have the air suspension which can be raised, but as many of you are probably aware, it always goes back down to a lower setting.

Do you think a 275/65/18 could fit in the WK2 without rubbing? I have heard that the max size you can fit on the WK2 without a lift is 32 inch diameter, but 275/65/18 is 32.1 inch. Would it be safer to just go with 270/65/18 at 31.8 inches?

I am looking for the widest and largest diameter tire to fit in my car without a permanent suspension lift, which is probably a year or so out. Stock tire is 265/60/18.

 

[Grassland]

Depends on wheel offset, and if you are comfortable with trimming valance, wheel well liners etc.

I feel like I've seen WK2 on large 32s and even 33s with the extended links that trick the air suspension into being one setting higher than normal.

 

[smlobx]

We run 275/55 R 20’s on my wife’s WK2 And have had zero rubbing on factory wheels.
The difference between the two tires is only 0.2” so I don’t think you’ll have any problems.

We have the standard suspension.

 

[PioneerOverland]

We run 275/55 R 20’s on my wife’s WK2 And have had zero rubbing on factory wheels.
The difference between the two tires is only 0.2” so I don’t think you’ll have any problems.

We have the standard suspension.

Thanks for that info. So you feel like there's no rubbing and a little room?

I really want to go with the 275/65/18s... especially because I will get a lift in a year or so.

 

[Ducstrom]

We're running 255/70-r18 on my wife's 2018 Grand Cherokee. They are take-off tires and wheels from a Jeep Wrangler Sahara. Looking at the tire size calculator they are pretty much the same diameter as the 275/65-18 you want, but .8 of an inch narrower.
Her Jeep does not have the air suspension. We don't get any rubbing, but there is only about a 1/4" clearance at both the front and back of the tire to the wheel well when turning. It's an extremely tight fit, we have the moulded splash guards on too.

 

[Grassland]

PioneerOverland are you intending to remove the air suspension down the road?
Otherwise from what I understand the lift links trick the suspension controls to sit one level higher.
So you lose OR2 as when in OR1 you are actually already at OR2 height.

I'll admit I haven't looked into the air suspension mods much as we deliberately avoided that system when we bought my wife's WK2. But I was under the impression there isn't much that can be done with it.

 

[gspfunk]

I currently have a 2017 Jeep Grand Cherokee Trailhawk. It does have the air suspension which can be raised, but as many of you are probably aware, it always goes back down to a lower setting.

Do you think a 275/65/18 could fit in the WK2 without rubbing? I have heard that the max size you can fit on the WK2 without a lift is 32 inch diameter, but 275/65/18 is 32.1 inch. Would it be safer to just go with 270/65/18 at 31.8 inches?

I am looking for the widest and largest diameter tire to fit in my car without a permanent suspension lift, which is probably a year or so out. Stock tire is 265/60/18.

Most 275/65r18’s fit w/o and issue. Some are even running those in LT, which have more tread and come in at about 32.3”. It really depends on how aggressive the side tread lugs are and how they stick out.

 

[PioneerOverland]

PioneerOverland are you intending to remove the air suspension down the road?
Otherwise from what I understand the lift links trick the suspension controls to sit one level higher.
So you lose OR2 as when in OR1 you are actually already at OR2 height.

I'll admit I haven't looked into the air suspension mods much as we deliberately avoided that system when we bought my wife's WK2. But I was under the impression there isn't much that can be done with it.

In a year or so I will replace the air suspension with a spring suspension--for a 2.5 in lift. For now I am sticking with the stock air suspension. It has served me well on all my adventures so far including some solid size boulder covered trail.

But in the long run I definitely want to make a change.

Most 275/65r18’s fit w/o and issue. Some are even running those in LT, which have more tread and come in at about 32.3”. It really depends on how aggressive the side tread lugs are and how they stick out.

Thanks, I think I will do the 275/65/18. I am hearing from a lot of people that this is an ok option without any problems.

 

[Grassland]

Pics when you are done!

 

[Jack105479]

Do you think a 275/65/18 could fit in the WK2 without rubbing

Actually the tire size is a general specification.
Each Manufacturer has an actual size chart if you look for it. Diameter and width will change between manufacturers and often between models in the same manufacturer with the same general size (275/65/18 etc.).
The "actual sizes" provided are based on a particular wheel size( "measuring rim") and it is always noted in the specifications of the jeep. A change in wheel width will have an effect on final tire width. but, has little effect on tire diameter due to the construction of the tire.

 

[corky14]

Any update on your tires and if they fit?

 

[JCG]

A late reply, but I can share pics... Stock rims (no spacers) with 275/65/18 Cooper AT3s fit with a slight rub when at "park" height and full turn. FYI - should probably get a spare with a matching diameter. I don't remember the size, but I got a more narrow and less aggressive tire to make it fit in the factory location.

 

[Caljur]

I know I’m responding late here ….

Now that you’ve got some miles on the 275/65R18 are you noticing any rubbing. I’m about to install a 2 inch OME lift on my Grand Cherokee and plan to keep the same wheels you’re using. Would love to go with 275/65R18 Falken Wildpeak AT3W. I have the same in stock size now and love them. The Coopers are great too - my father-in-law raves about his - but I’m hopelessly brand loyal.

 

[Jc1986.carter]

When I had my wk2 with the ome lift I used 32s on Jkr wheels, I think they were 265/70r17s. Unless the trail hawk requires 18s to clear the brakes or you like the wheels 17s will provide more options with more sidewall.

 

[Caljur]

When I had my wk2 with the ome lift I used 32s on Jkr wheels, I think they were 265/70r17s. Unless the trail hawk requires 18s to clear the brakes or you like the wheels 17s will provide more options with more sidewall.

Thanks for this. Seeing that tire size with that level of articulation is really helpful.