43MM OFFSET WHEELS GOING ON 460 WITH ARCHES - WILL IT WORK?

Alain:

I believe it will work, but I'd like to put my reasoning to the test of this very knowledgeable audience.

The rims you mean I believe are the 7.5J x 18 H2 ET 43 Ashtaroth (US version of the rims fitted to the G500). They have an offset (ET) of 43mm as opposed to the 63mm of the European (and indeed rest-of-the-world) G500s.

The rims that I presume your car was originally fitted with (having extended wheelarches) are the 7J x 15 H2 ET 37 alloys fitted to most 460s.

Well, assuming that you will fit the Asharoths with 265/70 R18 tyres, the distance which they will protrude from the centre of the rim to the inside of you car (thus creating potential rubbing) is : 43 + 132.5 = 175.5 mm (ET plus 1/2 of the width of the tyre).

In the case of your current wheels, the distance which they will protrude to the inside of you car is 37 + 127.5 = 164.5 mm..

Therefore, the increase in "protruding" of the wheel/tyre como to the inside of your car is only 11mm or 1.1 cm. I would assume that this should fall within the tolerances allowed for movement due to suspension, etc on a off-road car so I would expect this not to be a problem, specially if you are using your car on the road.

Regarding the legal obligation that all your tyres are covered by the extended wheel arches to pass the MOT, a similar calculation applies. The distance that the Asharoths will stick out from the centre of your rim to the tip of the wheelarch is: 132.5 - 43 = 89.5 mm (1/2 width of the tyre minus the ET)

and the distance that your current wheels stick out from the centre of your rim to the tip of the wheelarch is: 127.5 - 37 = 90.5 mm. As you can see the difference is minute (1mm).

Like I said, not being an engineer I might be totally wrong but I would certainly try the wheels without spacers.

Regards,

(pics taken from K.Hold's website: http://home.telebel.de/klhold/wheelsfortheg.htm )