2016 Cherokee 75th Edition Larger Tires - 2014+ Jeep Cherokee Forums
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post #1 of 8 (permalink) Old 09-03-2016, 04:27 AM Thread Starter
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Cool 2016 Cherokee 75th Edition Larger Tires

We have had this 2016 Cherokee 75th Edition Jeep for about 4 months to date. It came with the bronze 18x7 inch wheels and 225/60/R18 Continental Tires. Since our 2016 Cherokee 75th Edition came with the off road suspension placing larger tires on it was not a problem for clearance. I will do some simple math end of this thread for the MPH shift.

First a few pictures of the interior of our 2016 Cherokee 75th Edition Jeep Cherokee...

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After researching several aftermarket options for 2014 through 2016 Jeep Cherokees we found for now it would be best to use Jeep Performance for the wheels. They look much like the TH wheels in design with these being solid black at 17x7.5 inches for dimensions. Most of the stock TH wheels I have seen in this area are black and silver machined in color. We chose the 245/65/R17 BF Goodrich KO2 tires. They gave our ride a much more aggressive look. The dealer gave us a discount since we purchased the vehicle from them. We let them do the complete job including sensors. At about 2800 miles it was time for an oil change so they did it as well. Everything went perfect. We were very happy with their service both at the vehicle sale and the mechanical service.

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Overall the ride seems a little bit different. The tire growl on the open road has a much deeper sound. You can definitely tell there is more sidewall tire with the way it handles. I have always liked the BF Goodrich KO tires on the snow and rain so I expect the BF Goodrich KO2 will perform as well if not better than the KO this winter. My wife really loves this vehicle. After the new wheels and tires were installed she only loves it even better. It has a meaner look. BTW, I actually do get to drive it some times. It still has that new car smell and now it has the brand new tire smell when I walk into the garage.

There is slight shift in the MPH because of the different size tires.

We went from 225/60/R18 Continental Tires to 245/65/R17 BF Goodrich KO2 Tires.

[(225 x (.60) x 2 ) / 25.4] + 18 = 28.6299 inches diameter
[(245 x (.65) x 2 ) / 25.4] + 17 = 29.5394 inches diameter

29.5394 - 28.6299 = 0.9095 inch increase
0.9095 / 28.6299 = 0.03177 fraction increase

0.03177 fraction is approximately 1/30 change rounded to the nearest tenth. At 30 MPH display we would actually be under 31 MPH. At 60 MPH we would actually be under 62 MPH. And at 90 MPH we would actually be under 93 MPH. It is not much of a change from comparing display vs reality.

Using circumference as the calculation gives the same fractional increase for the MPH shift.

{[(225 x (.60) x 2 ) / 25.4] + 18} x pi = 89.9436 inches circumference
{[(245 x (.65) x 2 ) / 25.4] + 17} x pi = 92.8007 inches circumference

92.8007 - 89.9436 = 2.8571 inches increase
2.8571 / 89.9436 = 0.03177 fraction increase

Anyway this is very first ever jeep vehicle. It is very nice with all of the luxury items included with the 75th Cherokee Edition. The cold weather group is great since it is just now beginning to get cold outside.

Last edited by ToxicRain; 09-03-2016 at 04:47 AM.
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post #2 of 8 (permalink) Old 09-03-2016, 04:53 AM
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does look lot better then the ugly stock wheels and tires
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post #3 of 8 (permalink) Old 09-03-2016, 07:08 AM
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At those figures you are the same as me, just over 3% difference. If you compare your speedo to a GPS you find its now probably spot on, mine is!

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Cheers, Dave.


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post #4 of 8 (permalink) Old 09-16-2016, 06:58 PM Thread Starter
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Question Hmmmm

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Originally Posted by David_Baker View Post
At those figures you are the same as me, just over 3% difference. If you compare your speedo to a GPS you find its now probably spot on, mine is!

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I had heard that they do Not automatically re-calibrate. I guess what I could do is highway it along side another car with factory size tires. While it is only off by about (1/30)th of a mile per mile I would like to know at 30, 60, and at 90 MPH to see if it automatically re-calibrates.

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post #5 of 8 (permalink) Old 09-16-2016, 08:15 PM
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Ther is no autorecalibration. It would be nice yes, but definitely not something installed on a Jeep.

Just download a GPS app for your phone. Like I said, mine is now pretty much spot on. At 60kmh its exact, at 80 its exact, at 100 on the spedo the real speed hovers between 100 amd 101, at 110 on the speedo real speed is 111. Since thats our max country speed limit I am happy with it.

Previously at 110 on the speedo was actually doing 108.

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Cheers, Dave.


2015 Granite Pearl Trailhawk 3.2L V6 with Aussie Lift and 245/70 R17 Duratracs

Technology group | Comfort/Convenience Group | Electronics convenience group | Safety and Security Group | Panoramic Sunroof | Leather Interior Group |
Uconnect 8.4N Am/Fm/DAB/Bt/NAV with 9 Speaker + Sub | Trailer Tow Group.
Born 6th June 2015, Adopted 31st August 2015
CLICK HERE FOR THE AUSSIE LIFT INFO!!!
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post #6 of 8 (permalink) Old 09-21-2016, 11:33 PM Thread Starter
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Cool

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Originally Posted by David_Baker View Post
Ther is no autorecalibration. It would be nice yes, but definitely not something installed on a Jeep.

Just download a GPS app for your phone. Like I said, mine is now pretty much spot on. At 60kmh its exact, at 80 its exact, at 100 on the spedo the real speed hovers between 100 amd 101, at 110 on the speedo real speed is 111. Since thats our max country speed limit I am happy with it.

Previously at 110 on the speedo was actually doing 108.

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Thanks, I will look into downloading a GPS app. I guess we need to wait for the hackware to re-program, "if possible", the parameters of the display vs. actual velocities.

Those continentals must be a little uncommon in size when it comes to some of the all terrain tires...

225/60/18 gives 8.86 inch width and 28.63 inch diameter.

Since my 75th year edition came with offroad suspension I wanted an all terrain tire. BF Goodrich KOs have always been good for me in the winter snow I chose the BFG KO2s for this year. I also wanted a little bit more sidewall so I chose the 17 inch wheels made for the Cherokee and sold through the Jeep dealers. They are a half of inch wider than my stock wheels but the offset changes from 41 to 31 so there is no clearance problems with these wheels. Of course the BFGKO2 tire choices that are close to stock size for 17 inch wheels are...

245/65/R17 9.65 inch width and 29.54 inch diameter a little larger diameter and a little larger width
225/65/R17 8.86 inch width and 28.52 inch diameter a little smaller diameter and the same width

I chose the same setup as the Cherokee Trail Hawk 245/65/R17 for wheels and tires. They look great with BFGKO2 in real life. The pictures do not do them justice. You can tell a little difference in the handling and driving but it is very subtle. The bumps in the road are no where near as harsh with the new setup. I feel much better driving on the snow and ice this winter, especially with the expense of the down payment the loan and the plates hitting near 40K, that the extra 2300 for wheels and tires is money well spent. We also got the Mopar locking lugs and all new cloth Cherokee carpets for front seats, the back seats, and the very back cargo area. The new carpets say Cherokee only on the front seat carpets and the cargo carpet. The soft rubbery plastic ones that came with the Cherokee will be used whenever we go off road.

I would not mind having a second Cherokee. They are very nice IMO. We also like the Jeep Wrangler very much. It is tough deciding what to get next.
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post #7 of 8 (permalink) Old 05-09-2017, 11:35 AM
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That looks real nice. I would like to do the exact to mine. Tires and wheels did you use, if you don't mind sharing. Thanks
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post #8 of 8 (permalink) Old 05-11-2017, 12:27 AM
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all to hard and complex you make life .........

go into the trip computer of your sat nav, it has the cars actual speed there of the cars gps
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