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Tyre Replacement Strategy

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IanB

Member Since: 10 Aug 2007
Location: Brisbane
Posts: 3

2006 Discovery 3 TDV6 S Auto Buckingham Blue

Tyre Replacement Strategy

Hi All

I don't submit too many items here but tyres are my ultimate frustration with the D3 so I am looking for some clarification/advice regarding replacing OEM tyres with aftermarket ones. I am looking at moving from the dreaded Goodyears (235/70 r17) to Yokohama (255/65 r17), and as a result of some tyre shredding on a western qdl trip I have 2 relatively new goodyears on the front with 2 older worn goodyears on the back.

My plan was to install 2 new yokohama tyres on front and move best 2 Goodyears to rear. Then down track when Goodyears wear/puncture/shred/etc replace them with Yokohamas. Based on a couple of online tyre calculators and discussions with local tyre shop (LTS) there is only +2mm variation in overall tyres sizebetween these 2 sizes. This is well within QLD limits and should have minimal impact on speedo.

However additional advice from a LTS is that because the D3 has constant 4wd it is preferred to have same size tyres front and rear dso as not to put too much strain on diffs etc. (Same situation with other constant 4wd makes Subaru and some Audis etc - recommendation to replace all 4 at once).

I also noted on page 251 of the manual it state tyres should be replaced as sets of 4 and if that is not possible then replace as axle sets. (though it is not clear why)

I guess my question is - what risk am I really facing by adopting a replace 2 at a time tyre strategy. Is it likely to really impact vehicle given I am currently running 2 newish (front) and 2 worn (rear) tyres as they probably have a size difference just in wear and tear?

Your advice/thoughts please -------------------------------------
Bucking' Blue 06 TDV6 S (with Air & T/R)

17th Mar 2010 10:23 am

Bodsy
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Member Since: 06 Nov 2006
Location: In the Clubhouse
Posts: 21361

2007 Discovery 3 TDV6 HSE Auto Java Black

Regardless, you should always have the wider tyres on the rear, always! Bodsys Brake Bible

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17th Mar 2010 10:25 am

sijui

Member Since: 03 Mar 2006
Location: Rosebank
Posts: 81

Hi Ian
just my 2 bobs worth - you have a quality car and to enjoy the best I would not skimp on tyres and whilst I have got > 40,000kms out of the original wranglers on 2 sets and I know some people hate them, I don't think that is poor mileage for a heavy car.
I keep a set of 17inch coopers STT for safari work to get the best on road and off road experience.

18th Mar 2010 5:38 am

jpi3418

Member Since: 01 Jun 2006
Location: Brisbane, Queensland
Posts: 54

2014 Discovery 4 3.0 SDV6 HSE Auto Nara Bronze

I would recommend Cooper Discoverers. They come with a 55k warranty and whilst being much harder wearing than the Goodyears, ride just as well. They're also far cheaper so you win all round. 2005 D3 TdV6 HSE Buckingham Blue
2010 D4 3.0 TdV6 SE Stornoway Grey
2014 D4.5 SDV6 HSE Nara Bronze

19th Apr 2010 11:31 am

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