Jackaroo Tyres

Submitted: Monday, Feb 26, 2007 at 22:41
ThreadID: 42744 Views:3042 Replies:3 FollowUps:4
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Just upsized the Jackaroo from 245/70/16 to 265/75/16, giving a lift of about 26mm. The standard ground clearance (as measured at the rear diff) was 204 and is now 230mm. I
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Reply By: 4tysumthing - Monday, Feb 26, 2007 at 22:52

Monday, Feb 26, 2007 at 22:52
continuing above.... I should have done this years ago - heaps easier than a body lift. The change is amazing. I used to scrape the guts of the vehicle (exhaust, bashplate, cross bars, etc ) frequently when going over rocks and whoopty-doos. After a good offroad drive up Woods Point way on the weeekend, it did not scrape on any of the usual spots. I am using Cooper ATR's, as I had ATs before and they lasted 75,000 klms with only 3 punctures which were easily fixed with one of those do-it -yourself in-situ puncture reipair kits. The ride on the road with the 265's is nice - can't tell any difference except for the speedo being out a bit. No noticeable body roll, no extra noise.
AnswerID: 224209

Follow Up By: Wetty - Tuesday, Feb 27, 2007 at 09:38

Tuesday, Feb 27, 2007 at 09:38
Just keep an ear out for your gearbox whining. . . . . .It's about the only weak point of the vehicle.
FollowupID: 485112

Follow Up By: Leroy - Wednesday, Feb 28, 2007 at 13:10

Wednesday, Feb 28, 2007 at 13:10
a body lift won't give you more air between the ground and the diff. It would give you more room to fit bigger rubber and lift the sills a little higher.

FollowupID: 485486

Reply By: MEMBER - Darian (SA) - Tuesday, Feb 27, 2007 at 13:58

Tuesday, Feb 27, 2007 at 13:58
Being another Jack owner --- interested re my next set (unless I quit it before then) - how does this new size fit legally (insurance wise) with specs on the tyre placard etc ? Wheel arch clearance ok lock to lock ? Or does it scrape when you get a few dives in tough going etc ?
As others have said the Jack is a sturdy beast, but in its class, the lack of transfer case clearance is a bl......y embarrassment ! Other makes have theirs tucked way up - must have been too hard for Isuzu.
AnswerID: 224327

Follow Up By: 4tysumthing - Tuesday, Feb 27, 2007 at 16:07

Tuesday, Feb 27, 2007 at 16:07
I've read all the stuff about insurance, tyre placards etc. & basically I've ignored it all.
I trawled the 4wd websites and found that some other Jackaroo owners and Trooper owners in the USA & UK had put on the larger tyres with no problems. There is still plenty of cleararance around the guards and wheel arches and visually the tyres look really good - they don't look too big or oversize at all.
Essentially, it just raises the vehicle's clearance to what it should have been in the first place - close to that of a standard Pajero or Prado.
I put on a full set of Ironman Foam cell shockies a while ago and cranked up the torsion bars a bit to lift the front by about 20mm- which stopped the problem it had with the front end diving and bottoming out over bumps.
So altogether, it rides really well now and can handle all the rocks & ruts of a normal (non-lifted) 4wd.
FollowupID: 485229

Follow Up By: Gerhardp1 - Wednesday, Feb 28, 2007 at 12:59

Wednesday, Feb 28, 2007 at 12:59
I have 245/75-16 LT on the Jack, giving a bit of extra clearance.

These give a little bit less width than the originals, so going to 265/75-16 (also sounds like an LT size?) would restore the width and give some more clearance again.

I have stronger front torsion bars and higher springs which eliminated the touching on every rock syndrome.

I have no perception of extra body roll from the mods, it's probably less due to the extra stiffness.

I use a scanguage for the speedo as it allows an adjustment for tyre size changes.
FollowupID: 485483

Reply By: Mr Fawlty - Tuesday, Feb 27, 2007 at 20:41

Tuesday, Feb 27, 2007 at 20:41
I doubt to that in the event of an accident or insurance claim unless the tyres look wrong on the vehicle no one is going to bother checking the specs on the placard, then again the placard could come off, or the wording obliterated with a little cut & polish...But if the tyres were sticking out or looked wrong then you may be up for a challenge...
AnswerID: 224433

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