Where abouts are you? If you live in the nanny state of QLD, technically speaking on the JK you can only "legally" lift about 30mm from stock, despite being able to buy/fit "mopar" (Lovells) 50mm coils from the dealer... (no - technically the Mopar coils are not legal in QLD).
For tyres you can jump up maximum 15mm to a massive 32 inch diameter!!
And although we can 'legally' jump to 1.5x the normal tyre width, we can only drop the backspace from the stock 6in to 5in (when keeping at 7.5 in wide rims) to keep the track within the law (+50mm max), so realistically we can put about 305's on 5in backspace rims to keep within track limitations (315's would prob foul on 5in backspace). But then I am not 100% sure 305's are legal on 7.5in rims. Go to 8in rims and your backspace has to drop back to 5 1/4 in to keep track legal.
Bottom line, keeping it 100% legal is not easy...
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Cheers, Dave :)
2010 JK, then a 2015 KL Trailhawk, now a 2017 GC Trailhawk!
Over 5000 Club
Last edited by SeaComms; 05-02-2011 at 09:16 AM.
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