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New tyres need to go on the rear?

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JumboBeef:
Have a look at this thread:

http://www.caravantalk.org.uk/topic/38108-tyre-tread-when-towing/

It has been stated that when only two new tyres are fitted to a 4x4, they must be fitted to the rear and not the front.  Any truth in this please?

(I've recently had two new tyres on the front of the Disco).

V8MoneyPit:
It's to do with 4x4's fitted with viscous couplings. The fitting to the rear is not always correct though....

http://www.mud-club.com/forum/index.php/topic,79481.0.html

JumboBeef:
Ah.  Is it all 4x4s or just Freelanders?

V8MoneyPit:
All 4x4's that have a VCU.

I'm guessing most modern small 4x4's will have one fitted. The problem is something to do with tyre diameter differences screwing up the VCU. Beyond that, I don't know the details.

In something like a Defender, the centre differential takes care of the problem.

JumboBeef:
OK, in the three years that I've owned my Disco, it has always had new tyres on the front and the older ones moved to the back.  However, when you consider the tyre pressures are 8ppsi higher at the rear, is a couple of mm of less tread going to make a difference?

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