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  #313  
Old 01-08-2016, 06:52 PM
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Re: 20" Tyre Thread

My last concern with the 285/50/20 is how close will they be to the upper control arm boltImageUploadedByJeepGarage1452300480.482931.jpg? Attached shows the stock khumos, and they are pretty snug (about a thumb width).
I know others are running the 285/50/20 no problems, so just looking for some reassurance really... I guess when airing down for off-road the gap will get bigger too, so should be all good.
How close are your 275/55 Hutch?
Anyone else running 285/50/20?

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  #314  
Old 01-08-2016, 08:55 PM
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Re: 20" Tyre Thread

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Originally Posted by Brett View Post
My last concern with the 285/50/20 is how close will they be to the upper control arm boltAttachment 63846? Attached shows the stock khumos, and they are pretty snug (about a thumb width).
I know others are running the 285/50/20 no problems, so just looking for some reassurance really... I guess when airing down for off-road the gap will get bigger too, so should be all good.
How close are your 275/55 Hutch?
Anyone else running 285/50/20?
Airing down will not affect the profile up high, only the contact patch. However, I share your concern about the clearance. The control arm you are referring to is the top of arm of the steering knuckle. They are not particularly strong. The steering knuckle is absolutely identical to a range of Chrysler vehicles so there is no particular allowance for off-roading. I've already bent one but not quite far enough to touch the tyre. BTW, by legislation, they are not allowed to be straightened so I had to get a new one. I bought it myself from the States and got a local trusted mechanic to fit it. Much much cheaper than getting Jeep to do it.
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Old 01-08-2016, 09:33 PM
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20" Tyre Thread

I just fitted the Bridgie 697 this morning, previously I could just get a finger between the tyre and the bolt with 275/55/20, with the 285/60/18 it actually has slightly more room, it will really depend on the tyre and how square the shoulder is. I have gone to 18 inch wheels not sure if they are slightly more offset any more, they are off a 2013 model.



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  #316  
Old 01-09-2016, 12:14 AM
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Re: 20" Tyre Thread

Yeah good point BobT about airing down not affecting up high near the control arm...
In theory I reckon the gap between tyre and control arm on the 285/50/20 should be pretty much the same as with the 275/55/20 since the 285 is a bit wider, but the 275/55 is a bit higher. Hopefully that theory plays out, still a bit worried though.
Good to know you still had OK clearance with the 275/55 Hutch. Also good to know your 285/60/18 was all good, which in theory have slightly greater OD than 285/50/20.
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Old 01-09-2016, 07:29 PM
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Re: 20" Tyre Thread

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Originally Posted by Hutch801 View Post
I just fitted the Bridgie 697 this morning, previously I could just get a finger between the tyre and the bolt with 275/55/20, with the 285/60/18 it actually has slightly more room, it will really depend on the tyre and how square the shoulder is. I have gone to 18 inch wheels not sure if they are slightly more offset any more, they are off a 2013 model.



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The Bridgie 697 285/60R18 is an LT tyre whereas your Kumho(?) 275/22/20 was a passenger tyre albeit an XL passenger tyre. LT tyres are relatively rigid and square whereas passenger tyres bulge more for comfort and performance. So while your 697's have a wider tread, the tyre is actually narrower. Better for off-roading. Those soft bulgy sidewalls on passenger tyres are so vulnerable to rocks. This is also why a stock sized passenger tyre won't fit into the spare tyre well whereas a stock sized LT will just fit... but forget trying to fit the 285's in. The XL refers to extra load. In all respects it is still just a passenger tyre but made slightly stronger in order to take high air pressures and therefore higher loads. Frankly I don't think XL tyres are worth it for the Jeep. The axle load capacity of the Jeep is not really high enough to take advantage of the extra load capacity of XL tyres.
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  #318  
Old 01-12-2016, 10:02 PM
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20" Tyre Thread

ImageUploadedByJeepGarage1452657235.567339.jpg
Had the 385/50/20 [edit: 285/50/20] terra grapplers fitted today. Looks great! Looks like a real "fourby" now. They are very quiet, do not bother me at all with windows down and radio off. Haven't had on freeway yet though.

The gap between the tyre and control arm bolt is a bit worrying. Probably a little less than 5mm - can't even fit the end of my pinkie finger in the gap! I guess it should be OK but am heading to Fraser this weekend and am freaking out to say the least...

Getting wheel alignment done by jeep tomorrow, so hopefully the gap gets no worse. Might have to consider some spacers when I get back?
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  #319  
Old 01-12-2016, 10:20 PM
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Re: 20" Tyre Thread

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Originally Posted by Brett View Post
Attachment 63994
Had the 385/50/20 [edit: 285/50/20] terra grapplers fitted today. Looks great! Looks like a real "fourby" now. They are very quiet, do not bother me at all with windows down and radio off. Haven't had on freeway yet though.

The gap between the tyre and control arm bolt is a bit worrying. Probably a little less than 5mm - can't even fit the end of my pinkie finger in the gap! I guess it should be OK but am heading to Fraser this weekend and am freaking out to say the least...

Getting wheel alignment done by jeep tomorrow, so hopefully the gap gets no worse. Might have to consider some spacers when I get back?
They look great - it looks like a Jeep now. Is there any rubbing?

I have QL and 275/55-20 Duratracs, and at Park height, full lock right, there is some rubbing, not a lot. It's noticeable in reverse, and not noticeable in forward. Parking lot speeds, less than 3 MPH. Also when I have four adults and driving at Aero height, on some bigger bumps I get a little rubbing at the left rear at the bottom of the suspension travel. After the bump there is no rubbing; only on the bumps, and only on bigger ones.
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  #320  
Old 01-13-2016, 02:24 AM
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Re: 20" Tyre Thread

Quote:
Originally Posted by Brett View Post
Attachment 63994
Had the 385/50/20 [edit: 285/50/20] terra grapplers fitted today. Looks great! Looks like a real "fourby" now. They are very quiet, do not bother me at all with windows down and radio off. Haven't had on freeway yet though.

The gap between the tyre and control arm bolt is a bit worrying. Probably a little less than 5mm - can't even fit the end of my pinkie finger in the gap! I guess it should be OK but am heading to Fraser this weekend and am freaking out to say the least...

Getting wheel alignment done by jeep tomorrow, so hopefully the gap gets no worse. Might have to consider some spacers when I get back?

Does it look aggressive?
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  #321  
Old 01-13-2016, 03:43 AM
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Re: 20" Tyre Thread

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Does it look aggressive?
Bob is gonna smash you one
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  #322  
Old 01-13-2016, 05:07 AM
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Re: 20" Tyre Thread

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Does it look aggressive?

Well, at the risk of making BobT aggressive... Yes! I just hope the tyres don't get aggressive with the upper control arm bolt when I air them down and give them a thrashing.

I love the look. I have not had any rubbing, even in sports mode / full lock. Haven't tried park mode yet, but not too concerned about that as I never really use it. Noise is definitely more noticeable, but not at all an "aggressive" noise, even @ 110kph.
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Old 01-13-2016, 06:18 AM
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Has anyone fitted Pirelli Verde All Season ???
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  #324  
Old 01-13-2016, 07:39 PM
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20" Tyre Thread

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Bob is gonna smash you one

Yes I know, I just wanted to chime in..

Brett, Just pulling your leg, I've got the nittos myself.
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