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Can a 4wd car have different rolling radius tyres front/back

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Old 17-09-2006, 06:57 PM
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Tony Ryan
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Default Can a 4wd car have different rolling radius tyres front/back

? As title ! And is there a way round this with a 4wd box to make it possible as i suspect the real answer is NO
Old 17-09-2006, 07:01 PM
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TIFF
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No as it will wind the diff up on it
Old 17-09-2006, 07:12 PM
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yes it can Tony.



























but the diffs won't last long.
Old 17-09-2006, 07:13 PM
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Tony Ryan
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lol . There must be a way of doing it , if you can adjust the drop gears to suit different ratios then this is just a few per cent added to that surely ??
Old 17-09-2006, 07:27 PM
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its finding out the exact sizes would be difficult and trying to match them up to certain diffs.

in theory it sounds possible.
Old 17-09-2006, 08:05 PM
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Tony Ryan
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Well i already know the tyre size, is it just a case of working out the %age difference and adding that to the drop gear !
Old 18-09-2006, 05:44 AM
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Lloyd
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just use a skyline gearbox,
Old 18-09-2006, 07:06 AM
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why ?
Old 18-09-2006, 07:10 AM
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Wouldnt you need a 3rd diff
Old 18-09-2006, 07:16 AM
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you'll burn out the viscous coupling in the transfer box in a matter of minutes if you put different sized tyres front and rear

there was a thread about using different gears inside but i can't remember who posted it or where it was posted, but i've seen in in the last few days
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