5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
I have recently bought a 2003 BMW 540 Motorsport, one of the last they made. Sapphire Met Black done 108kms.
In great condition although the harsher ride is something I haven't quite adjusted to yet ! I've had a base 540 some years ago and the ride was much more comfortable understandably.
Which leads me to tyres. The M has Yokohama Advan tyres and I'm wondering if they are contributing to the ride and road noise or is that normal ?
The previous 540 also had Advan Sport tyres ( 18" ) and there were no issues with them.
What are the tire size? Lower profile tires usually are more harsh then tires with more rubber. My 17" Contours are a better ride then my 18"s with low profiles (even though their the same height lol).
I have 235/40R18's on my car. I swapped to a set of 17's and the ride comfort increased enough to be noticeable. The profile on the 235/40 is so small it doesnt absorb much from the road, transferring it into your suspension. 17"s are better because they have more tire and air allowing for more cushioning.
On the left is my 18"s and on the right is the 17"s i got off a wreck I bought. The tires are worn to shit, but you can still see the comparison in size between the two.
Forgot to add, the E39 M5 makes 400hp stock. Their is a car that used to be in Chigaco called the "El Diablo". It was a custom E39 M5 making 1,001hp on a twin turbo setup. Looked stock except for the wheels. It has a twin, in Leguna Seca Blue, making 800hp.
The M62 engine can make huge numbers if done right. I would be looking into a Supercharger kit for it for sure. Dinan makes one, but new their $12,000. The Dinan ones are the best for the M62 based on some reading that I have done. But find one used as they drop in price a fair bit.
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