Jackaroo Tyres
Submitted: Monday, Feb 26, 2007 at 22:41
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4tysumthing
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
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.
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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.
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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.
Leroy
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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.
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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.
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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.
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