18 vs 20" tires - Jeep Garage - Jeep Forum

Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK2 - > Suspension/Driveline/Brakes/Wheels/Tires

Reply
 
Thread Tools Display Modes
 
  #1  
Old 08-12-2015, 03:11 PM
Member
My Jeep: 2014 3.6L WK2
 
Join Date: Sep 2013
Location: Richmond, VA
Posts: 159
Thanks: 4
Thanked 15 Times in 12 Posts
Rep Power: 1553
68camaro is on a distinguished road
18 vs 20" tires

My Overland came with 20" tires, i do mostly city/hwy driving but want to start getting off-road more, nothing too scary.

Should I be looking at 18" or is a more aggressive 20" made I could look at.

Tirerack really didn't have options for 20" on/off road.

Thanks

Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old 08-12-2015, 03:42 PM
Premium Member
My Jeep: 2014 5.7L WK2
 
Join Date: May 2013
Location: Colorado
Posts: 4,118
Thanks: 74
Thanked 297 Times in 261 Posts
Rep Power: 46571
lstowell has a reputation beyond reputelstowell has a reputation beyond reputelstowell has a reputation beyond reputelstowell has a reputation beyond reputelstowell has a reputation beyond reputelstowell has a reputation beyond reputelstowell has a reputation beyond reputelstowell has a reputation beyond reputelstowell has a reputation beyond reputelstowell has a reputation beyond reputelstowell has a reputation beyond repute
Re: 18 vs 20" tires

Quote:
Originally Posted by 68camaro View Post
My Overland came with 20" tires, i do mostly city/hwy driving but want to start getting off-road more, nothing too scary.

Should I be looking at 18" or is a more aggressive 20" made I could look at.

Tirerack really didn't have options for 20" on/off road.

Thanks
It depends on how much and what type of "off roading" you want to do.
If you are seriously thinking of challenging Wrangler Rubicons, you have the wrong vehicle options. [Unless Jeep offered the OR-II package with 20's recently].

For milder "semi roading" try Discount Tire, and TireRack does have 20" Contis, plus someone noted that Michelin now has a 20" version of the venerable MS/2 called something else. The MS/2 will have more capability than your vehicle will.

Heck, I've seen SRT's in places I would not have thought they'd risk.
Reply With Quote
  #3  
Old 08-12-2015, 05:51 PM
Member
 
Join Date: Mar 2015
Posts: 586
Thanks: 57
Thanked 114 Times in 75 Posts
Rep Power: 1530
farfromovin has a reputation beyond reputefarfromovin has a reputation beyond reputefarfromovin has a reputation beyond reputefarfromovin has a reputation beyond reputefarfromovin has a reputation beyond reputefarfromovin has a reputation beyond repute
Re: 18 vs 20" tires

The 18" vs 20" debate is something you'll need to answer based on planned usage. Yes, taller sidewalls will help for airing down purposes and give more cushion.

Here's some of the 20's I am considering:
BFG K02
Goodyear Duratrac
Nitto Terra Grappler G2
Nitto Exo Grappler

They all come in 275/55r20 and all are highly rated and recommended.
__________________
'15 GC 4x4 Summit - GDE Hot Tune, Berger N54 ccv catch can, 4300k Philips HID fogs, VLED TRITON V3 LED brake lights
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old 08-12-2015, 07:10 PM
Member
My Jeep: 2014 3.6L WK2
 
Join Date: Sep 2013
Location: Richmond, VA
Posts: 159
Thanks: 4
Thanked 15 Times in 12 Posts
Rep Power: 1553
68camaro is on a distinguished road
Re: 18 vs 20" tires

Quote:
Originally Posted by farfromovin View Post

They all come in 275/55r20 and all are highly rated and recommended.
Will these fit on my JGC Overland, my current size tire is 265/50/20?

Will I need to trim anything to make fit?

Thanks
Reply With Quote
  #5  
Old 08-12-2015, 07:15 PM
Member
My Jeep: 2014 3.6L WK2
 
Join Date: Sep 2013
Location: Richmond, VA
Posts: 159
Thanks: 4
Thanked 15 Times in 12 Posts
Rep Power: 1553
68camaro is on a distinguished road
Re: 18 vs 20" tires

Quote:
Originally Posted by lstowell View Post
It depends on how much and what type of "off roading" you want to do.
If you are seriously thinking of challenging Wrangler Rubicons, you have the wrong vehicle options. [Unless Jeep offered the OR-II package with 20's recently].

For milder "semi roading" try Discount Tire, and TireRack does have 20" Contis, plus someone noted that Michelin now has a 20" version of the venerable MS/2 called something else. The MS/2 will have more capability than your vehicle will.

Heck, I've seen SRT's in places I would not have thought they'd risk.
Thanks.

No Wrangler rustling, just firetrails and such looking for perfect fishing spots. "Milder" is good word.
Reply With Quote
  #6  
Old 08-12-2015, 07:42 PM
Benn0's Avatar
Senior Member
 
Join Date: Oct 2013
Location: Brisbane, Australia
Posts: 2,180
Thanks: 116
Thanked 361 Times in 278 Posts
Rep Power: 18979
Benn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond reputeBenn0 has a reputation beyond repute
Garage
Re: 18 vs 20" tires

Quote:
Originally Posted by 68camaro View Post
Will these fit on my JGC Overland, my current size tire is 265/50/20?

Will I need to trim anything to make fit?

Thanks
275/55r20s do fit, here is some discussion in the Oz thread:
20" Tyre Thread
You might have different options in the states.
__________________
MY14 Grand Cherokee LTD CRD - ORA2 & QL | Mopar 18" Night Fever Rims & Rock Rails | Chief Recovery Hooks & Sump Skid Plate | STMaxx 275/65R18
Reply With Quote
  #7  
Old 08-13-2015, 12:48 AM
Member
 
Join Date: Mar 2015
Posts: 586
Thanks: 57
Thanked 114 Times in 75 Posts
Rep Power: 1530
farfromovin has a reputation beyond reputefarfromovin has a reputation beyond reputefarfromovin has a reputation beyond reputefarfromovin has a reputation beyond reputefarfromovin has a reputation beyond reputefarfromovin has a reputation beyond repute
Re: 18 vs 20" tires

They fit, I might have read one one or two types of tire that run at extreme lock in parking mode only but a minor fender liner adjustment would set you straight. Or just set parking mode to off.
__________________
'15 GC 4x4 Summit - GDE Hot Tune, Berger N54 ccv catch can, 4300k Philips HID fogs, VLED TRITON V3 LED brake lights
Reply With Quote
  #8  
Old 09-02-2015, 07:26 PM
old grisly's Avatar
Member
My Jeep: 2013 5.7L WK2
 
Join Date: Jun 2013
Location: SW Coast of Oregon
Posts: 37
Thanks: 0
Thanked 3 Times in 3 Posts
Rep Power: 1517
old grisly is on a distinguished road
Re: 18 vs 20" tires

I just installed BFG 275/55/r20's AT TA K02's on my 2013 JGC and they fit even in park height - tight but they fit. Closest hardware to the tire is the top bolt of the front shock, about 1/2 inch clearance but it works. Tires are awesome by the way.

No idea why the pic is upside down ...
Attached Images
File Type: jpg IMG_0178.jpg (552.8 KB, 31 views)
Reply With Quote
  #9  
Old 09-02-2015, 09:00 PM
echo7tango's Avatar
Premium Member
My Jeep: 2016 3.0L WK2
 
Join Date: Dec 2012
Location: SF Giants Nation 2010 / 2012 / 2014!
Posts: 1,147
Thanks: 179
Thanked 267 Times in 186 Posts
Rep Power: 70023
echo7tango has a reputation beyond reputeecho7tango has a reputation beyond reputeecho7tango has a reputation beyond reputeecho7tango has a reputation beyond reputeecho7tango has a reputation beyond reputeecho7tango has a reputation beyond reputeecho7tango has a reputation beyond reputeecho7tango has a reputation beyond reputeecho7tango has a reputation beyond reputeecho7tango has a reputation beyond reputeecho7tango has a reputation beyond repute
Re: 18 vs 20" tires

68camaro, I'm in the same boat as you. I have 20s and I do some mild off-roading. When I bought the JGC the salesman was going to let me swap in 18s if I wanted them instead of the 20s. I gave that some serious thought but in the end decided to keep the 20s that were on it. That was pretty nice of the salesman to offer that, BTW.


I figure that I'll be doing about 95-98% on-road and 2-5% off, and I like the look of the 20" wheels. In the year+ and 21,000 miles I've put on so far, I've been able to do some off-roading. One event was a 4X4 "Safety Clinic" with a local 4WD club where with the OEM Forteras and QL I came away duly impressed with the obstacles my month-old (at the time) JGC was able to do. I posted about that here, just search for it.


Hollister Hills is about an hour from where I live. The rated trails (easy, medium, hard) are great for practicing. I bought an annual pass.


Hollister Hills SVRA: Hollister Hills SVRA
Map of the Upper Ranch area: http://ohv.parks.ca.gov/pages/1170/f...anch_final.pdf


The clinic was held there, and with the club's spotters talking you through I was able to do some pretty tough obstacles. We were in the Obstacle Course part of Upper Ranch. I've also taken my rig up high to the Hector Heights Overlook a couple of times. Once I tried it when the trails were muddy but it was too slick and I turned around because the hills there are too steep and I didn't want to slide off of the cliffs.


Google hollister hills frame twister and hollister hills stair stepper and you'll see what a WK2 on 20s can do in the hands of an off-road newbie.


Also, the sand dunes of Pismo Beach are a 3 hour drive, and the low profile 20s do okay. I did not air down because I wanted to protect my rims. Next time I go though, I will air down especially for the really soft sand.


Anyway, sorry for the long post but I think you'll do fine with the 20s. Especially with AT tires which I will get next, . You'll be able to do a lot of off-roading, IMHO. As your (our) skills and experience improve, we might want to "graduate" to 18s or even 16s to increase our capabilities, but for now 20s are fine for me.


HTH,
e7t
__________________
★ 2016 JGC CRD 3.0L V-6 WK2, QL, QD-II, ORA-II, Wrangler Duratrac 275/55-20 ★
Reply With Quote
Reply

Tags
tires

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Difference between factory-installed Limited 18" tires vs. Offroad Group 18" tires? rb3wreath Suspension/Driveline/Brakes/Wheels/Tires 2 07-12-2011 11:28 AM

» Premium Vendor Showcase
Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 05:32 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community

JeepGarage.org is in no way associated with or endorsed by FCA US LLC. Chrysler, Dodge, Jeep, Ram, Mopar and SRT are registered trademarks of FCA US LLC.