Largest 18" tyres that can be fitted?

[23split Lurker Find all posts View Profile Close 23split]

Hello, considering getting some 265/70r18 BFG TA KO2's to replace the Grandtreks on my 150 18" factory wheel equipped 2009 120 Series VX.
Ran 265/70r17 Cooper ATR's until recently (804mm Dia) without any clearance issues at all (ATS Lovell/Bilstien 2 1/2 lift kit) and have now switched to the larger VX/Kakadu rims so hope to find a tyre of similar or larger diameter (the KO 265/70r18's are about 829mm).
Wondering what combos 150 VX/Kakadu owner have success with? Any advice appreciated.
Cheers,
23Split

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265/70R18 would be close to 285/70R17 in outer diameter but without the extra width to give you clearance with the UCAs. So I would say that it is the ideal tyre size if you want to go up 2 sizes in diameter while maintaining the same width.

[23split Lurker Find all posts View Profile Close 23split]

Thanks for the reply amts,
You're bang-on with your comments as the 265/70r18 is only about 3mm smaller a 285/70r17 tyres.

Wonder if any forum members are currently either of those combo's and what their thoughts are on the pro/cons of running a 830mm (32") outside diameter wheel/tyre package?

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Pros is extra clearance
Cons is reduction in performance, more fuel use, more brake component wear, need to consider regear.

[23split Lurker Find all posts View Profile Close 23split]

Not really a great photo but you might be able to see the clearance the car had with the 265/70r17's (Cooper ATR's) with a 804mm or 31 1/2" Dia.

A 265/70r18 rolls out closer to a full 32" but from reading through other articles there seems to be plenty of owners running 32"-33" tyres with too many issues apart from slight rubbing on the front UCA's at higher body-suspension angles or full steering lock.