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"Weight" it also an issue (archive)
[ Follow Ups ] [ 5-series (E39) Message Board ] [ Msg. Board FAQ ]
Posted by Jim Cash on July 30, 2001 at 08:40:26:

In Reply to: wheel fitting problem help! posted by Gollums on July 29, 2001 at 20:50:09:

i sold my e34 and kept the rims. i have the mk motorsport 18x8.5 front and 18x10 rears they fit fine on my e34 but will they fit my soon to be e39. if my guess is correct they should be a perfect fit. unless?


It is possible to mount other wheels by using hub centring rings, but there are other issues at play here.

With the move to lighter suspension BMW is reducing the unsprung weight. They also developed a new line of wheels for the e39 - lighter, and changed the hub centre size to try and discourage use of older heavier wheels.

The weight of most of the e39 OEM wheel/tire combinations is around 39-42 lbs.

Aftermarket tires tend to be a bit heavier, and then if you use a heavier wheel you can be getting a significant increase in unsprung weight.

My recent tires are a little heavier (45.5 lbs per wheel/tire) and I can notice the difference in come situations (up & down movement seems less responsive on washboard surfaces).

So take weight into account when looking at wheels and tires.

Cheers
Jim Cash

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